RelBuilder (Apache Calcite calcite API)

java.lang.Object
- org.apache.calcite.tools.RelBuilder

Direct Known Subclasses:

PigRelBuilder, PigRelBuilder
```
public class RelBuilder
extends Object
```
Builder for relational expressions.
RelBuilder does not make possible anything that you could not also accomplish by calling the factory methods of the particular relational expression. But it makes common tasks more straightforward and concise.
RelBuilder uses factories to create relational expressions. By default, it uses the default factories, which create logical relational expressions (LogicalFilter, LogicalProject and so forth). But you could override those factories so that, say, filter creates instead a HiveFilter.
It is not thread-safe.

Nested Class Summary

Nested Classes
Modifier and Type	Class and Description
`static interface`	`RelBuilder.AggCall` Information necessary to create a call to an aggregate function.
`static interface`	`RelBuilder.Config` Configuration of RelBuilder.
`static class`	`RelBuilder.ConfigBuilder` Deprecated. Use the `withXxx` methods in `RelBuilder.Config`.
`static interface`	`RelBuilder.GroupKey` Information necessary to create the GROUP BY clause of an Aggregate.
`static class`	`RelBuilder.GroupKeyImpl` Implementation of `RelBuilder.GroupKey`.

Field Summary

Fields
Modifier and Type Field and Description

protected RelOptCluster cluster

protected RelOptSchema relOptSchema

Fields
Modifier and Type	Field and Description
`protected RelOptCluster`	`cluster`
`protected RelOptSchema`	`relOptSchema`

Constructor Summary

Constructors
Modifier Constructor and Description

protected RelBuilder(Context context, RelOptCluster cluster, RelOptSchema relOptSchema)

Constructors
Modifier	Constructor and Description
`protected`	`RelBuilder(Context context, RelOptCluster cluster, RelOptSchema relOptSchema)`

Method Summary

All Methods Static Methods Instance Methods Concrete Methods Deprecated Methods
Modifier and Type	Method and Description
`RelBuilder`	`adoptConvention(Convention convention)` Returns new RelBuilder that adopts the convention provided.
`RelBuilder`	`aggregate(RelBuilder.GroupKey groupKey, Iterable<RelBuilder.AggCall> aggCalls)` Creates an `Aggregate` with multiple calls.
`RelBuilder`	`aggregate(RelBuilder.GroupKey groupKey, List<AggregateCall> aggregateCalls)` Creates an `Aggregate` with an array of `AggregateCall`s.
`RelBuilder`	`aggregate(RelBuilder.GroupKey groupKey, RelBuilder.AggCall... aggCalls)` Creates an `Aggregate` with an array of calls.
`protected RelBuilder.AggCall`	`aggregateCall(SqlAggFunction aggFunction, boolean distinct, boolean approximate, boolean ignoreNulls, RexNode filter, com.google.common.collect.ImmutableList<RexNode> orderKeys, String alias, com.google.common.collect.ImmutableList<RexNode> operands)` Creates a call to an aggregate function with all applicable operands.
`RelBuilder.AggCall`	`aggregateCall(SqlAggFunction aggFunction, boolean distinct, boolean approximate, RexNode filter, String alias, Iterable<? extends RexNode> operands)` Deprecated.
`RelBuilder.AggCall`	`aggregateCall(SqlAggFunction aggFunction, boolean distinct, boolean approximate, RexNode filter, String alias, RexNode... operands)` Deprecated.
`RelBuilder.AggCall`	`aggregateCall(SqlAggFunction aggFunction, boolean distinct, RexNode filter, String alias, Iterable<? extends RexNode> operands)` Deprecated.
`RelBuilder.AggCall`	`aggregateCall(SqlAggFunction aggFunction, boolean distinct, RexNode filter, String alias, RexNode... operands)` Deprecated.
`RelBuilder.AggCall`	`aggregateCall(SqlAggFunction aggFunction, Iterable<? extends RexNode> operands)` Creates a call to an aggregate function.
`RelBuilder.AggCall`	`aggregateCall(SqlAggFunction aggFunction, RexNode... operands)` Creates a call to an aggregate function.
`RexNode`	`alias(RexNode expr, String alias)` Returns an expression wrapped in an alias.
`RexNode`	`and(Iterable<? extends RexNode> operands)` Creates an AND.
`RexNode`	`and(RexNode... operands)` Creates an AND.
`RelBuilder`	`antiJoin(Iterable<? extends RexNode> conditions)` Creates an anti-join.
`RelBuilder`	`antiJoin(RexNode... conditions)` Creates an anti-join.
`RelBuilder`	`as(String alias)` Assigns a table alias to the top entry on the stack.
`RelBuilder.AggCall`	`avg(boolean distinct, String alias, RexNode operand)` Creates a call to the `AVG` aggregate function, optionally distinct and with an alias.
`RelBuilder.AggCall`	`avg(RexNode operand)` Creates a call to the `AVG` aggregate function.
`RelNode`	`build()` Returns the final relational expression.
`RexNode`	`call(SqlOperator operator, Iterable<? extends RexNode> operands)` Creates a call to a scalar operator.
`RexNode`	`call(SqlOperator operator, RexNode... operands)` Creates a call to a scalar operator.
`RexNode`	`cast(RexNode expr, SqlTypeName typeName)` Creates an expression that casts an expression to a given type.
`RexNode`	`cast(RexNode expr, SqlTypeName typeName, int precision)` Creates an expression that casts an expression to a type with a given name and precision or length.
`RexNode`	`cast(RexNode expr, SqlTypeName typeName, int precision, int scale)` Creates an expression that casts an expression to a type with a given name, precision and scale.
`void`	`clear()` Clears the stack.
`RelBuilder`	`convert(RelDataType castRowType, boolean rename)` Creates a projection that converts the current relational expression's output to a desired row type.
`RelBuilder`	`correlate(JoinRelType joinType, CorrelationId correlationId, Iterable<? extends RexNode> requiredFields)` Creates a `Correlate` with a `CorrelationId` and a list of fields that are used by correlation.
`RelBuilder`	`correlate(JoinRelType joinType, CorrelationId correlationId, RexNode... requiredFields)` Creates a `Correlate` with a `CorrelationId` and an array of fields that are used by correlation.
`RelBuilder.AggCall`	`count(boolean distinct, String alias, Iterable<? extends RexNode> operands)` Creates a call to the `COUNT` aggregate function, optionally distinct and with an alias.
`RelBuilder.AggCall`	`count(boolean distinct, String alias, RexNode... operands)` Creates a call to the `COUNT` aggregate function, optionally distinct and with an alias.
`RelBuilder.AggCall`	`count(Iterable<? extends RexNode> operands)` Creates a call to the `COUNT` aggregate function.
`RelBuilder.AggCall`	`count(RexNode... operands)` Creates a call to the `COUNT` aggregate function.
`RelBuilder.AggCall`	`countStar(String alias)` Creates a call to the `COUNT(*)` aggregate function.
`static RelBuilder`	`create(FrameworkConfig config)` Creates a RelBuilder.
`RexNode`	`cursor(int inputCount, int ordinal)` Creates a RexCall to the `CURSOR` function by ordinal.
`RexNode`	`desc(RexNode node)` Converts a sort expression to descending.
`RelBuilder`	`distinct()` Creates an `Aggregate` that makes the relational expression distinct on all fields.
`RexNode`	`dot(RexNode node, int fieldOrdinal)` Creates an access to a field by ordinal.
`RexNode`	`dot(RexNode node, String fieldName)` Creates an access to a field by name.
`RelBuilder`	`empty()` Creates a relational expression that reads from an input and throws all of the rows away.
`RexNode`	`equals(RexNode operand0, RexNode operand1)` Creates an `=`.
`RelBuilder`	`exchange(RelDistribution distribution)` Creates an Exchange by distribution.
`RexInputRef`	`field(int fieldOrdinal)` Creates a reference to an input field by ordinal.
`RexInputRef`	`field(int inputCount, int inputOrdinal, int fieldOrdinal)` Creates a reference to a field of a given input relational expression by ordinal.
`RexInputRef`	`field(int inputCount, int inputOrdinal, String fieldName)` Creates a reference to a field of given input relational expression by name.
`RexNode`	`field(int inputCount, String alias, String fieldName)` Creates a reference to a field which originated in a relation with the given alias.
`RexNode`	`field(RexNode e, String name)` Returns a reference to a given field of a record-valued expression.
`RexInputRef`	`field(String fieldName)` Creates a reference to a field by name.
`RexNode`	`field(String alias, String fieldName)` Creates a reference to a field of the current record which originated in a relation with a given alias.
`com.google.common.collect.ImmutableList<RexNode>`	`fields()` Returns references to the fields of the top input.
`com.google.common.collect.ImmutableList<RexNode>`	`fields(ImmutableBitSet ordinals)` Returns references to fields for a given bit set of input ordinals.
`com.google.common.collect.ImmutableList<RexNode>`	`fields(int inputCount, int inputOrdinal)` Returns references to the fields of a given input.
`com.google.common.collect.ImmutableList<RexNode>`	`fields(Iterable<String> fieldNames)` Returns references to fields identified by name.
`com.google.common.collect.ImmutableList<RexNode>`	`fields(List<? extends Number> ordinals)` Returns references to fields for a given list of input ordinals.
`com.google.common.collect.ImmutableList<RexNode>`	`fields(Mappings.TargetMapping mapping)` Returns references to fields identified by a mapping.
`com.google.common.collect.ImmutableList<RexNode>`	`fields(RelCollation collation)` Returns references to fields for a given collation.
`RelBuilder`	`filter(Iterable<? extends RexNode> predicates)` Creates a `Filter` of a list of predicates.
`RelBuilder`	`filter(Iterable<CorrelationId> variablesSet, Iterable<? extends RexNode> predicates)` Creates a `Filter` of a list of correlation variables and a list of predicates.
`RelBuilder`	`filter(Iterable<CorrelationId> variablesSet, RexNode... predicates)` Creates a `Filter` of a list of correlation variables and an array of predicates.
`RelBuilder`	`filter(RexNode... predicates)` Creates a `Filter` of an array of predicates.
`RelBuilder`	`functionScan(SqlOperator operator, int inputCount, Iterable<? extends RexNode> operands)` Creates a `TableFunctionScan`.
`RelBuilder`	`functionScan(SqlOperator operator, int inputCount, RexNode... operands)` Creates a `TableFunctionScan`.
`RelOptCluster`	`getCluster()`
`RelOptSchema`	`getRelOptSchema()`
`RexBuilder`	`getRexBuilder()` Returns the builder for `RexNode` expressions.
`RelFactories.TableScanFactory`	`getScanFactory()`
`RelDataTypeFactory`	`getTypeFactory()` Returns the type factory.
`RelBuilder.GroupKey`	`groupKey()` Creates an empty group key.
`RelBuilder.GroupKey`	`groupKey(ImmutableBitSet groupSet)` Creates a group key, identified by field positions in the underlying relational expression.
`RelBuilder.GroupKey`	`groupKey(ImmutableBitSet groupSet, boolean indicator, com.google.common.collect.ImmutableList<ImmutableBitSet> groupSets)` Deprecated. Use `groupKey(ImmutableBitSet, Iterable)`.
`RelBuilder.GroupKey`	`groupKey(ImmutableBitSet groupSet, com.google.common.collect.ImmutableList<ImmutableBitSet> groupSets)` Deprecated. Use `groupKey(ImmutableBitSet)` or `groupKey(ImmutableBitSet, Iterable)`.
`RelBuilder.GroupKey`	`groupKey(ImmutableBitSet groupSet, Iterable<? extends ImmutableBitSet> groupSets)` Creates a group key with grouping sets, both identified by field positions in the underlying relational expression.
`RelBuilder.GroupKey`	`groupKey(int... fieldOrdinals)` Creates a group key of fields identified by ordinal.
`RelBuilder.GroupKey`	`groupKey(Iterable<? extends RexNode> nodes)` Creates a group key.
`RelBuilder.GroupKey`	`groupKey(Iterable<? extends RexNode> nodes, boolean indicator, Iterable<? extends Iterable<? extends RexNode>> nodeLists)` Deprecated. Now that indicator is deprecated, use `groupKey(Iterable, Iterable)`, which has the same behavior as calling this method with `indicator = false`.
`RelBuilder.GroupKey`	`groupKey(Iterable<? extends RexNode> nodes, Iterable<? extends Iterable<? extends RexNode>> nodeLists)` Creates a group key with grouping sets.
`RelBuilder.GroupKey`	`groupKey(RexNode... nodes)` Creates a group key.
`RelBuilder.GroupKey`	`groupKey(String... fieldNames)` Creates a group key of fields identified by name.
`RelBuilder`	`hints(Iterable<RelHint> hints)` Attaches multiple hints to the stack top relational expression.
`RelBuilder`	`hints(RelHint... hints)` Attaches an array of hints to the stack top relational expression.
`RelBuilder`	`intersect(boolean all)` Creates an `Intersect` of the two most recent relational expressions on the stack.
`RelBuilder`	`intersect(boolean all, int n)` Creates an `Intersect` of the `n` most recent relational expressions on the stack.
`RexNode`	`isNotNull(RexNode operand)` Creates a IS NOT NULL.
`RexNode`	`isNull(RexNode operand)` Creates a IS NULL.
`RelBuilder`	`join(JoinRelType joinType, Iterable<? extends RexNode> conditions)` Creates a `Join` with multiple conditions.
`RelBuilder`	`join(JoinRelType joinType, RexNode condition)` Creates a `Join` with one condition.
`RelBuilder`	`join(JoinRelType joinType, RexNode condition0, RexNode... conditions)` Creates a `Join` with an array of conditions.
`RelBuilder`	`join(JoinRelType joinType, RexNode condition, Set<CorrelationId> variablesSet)` Creates a `Join` with correlating variables.
`RelBuilder`	`join(JoinRelType joinType, String... fieldNames)` Creates a `Join` using USING syntax.
`RelBuilder`	`limit(int offset, int fetch)` Creates a limit without a sort.
`RexNode`	`literal(Object value)` Creates a literal (constant expression).
`RelBuilder`	`match(RexNode pattern, boolean strictStart, boolean strictEnd, Map<String,RexNode> patternDefinitions, Iterable<? extends RexNode> measureList, RexNode after, Map<String,? extends SortedSet<String>> subsets, boolean allRows, Iterable<? extends RexNode> partitionKeys, Iterable<? extends RexNode> orderKeys, RexNode interval)` Creates a `Match`.
`RelBuilder.AggCall`	`max(RexNode operand)` Creates a call to the `MAX` aggregate function, optionally with an alias.
`RelBuilder.AggCall`	`max(String alias, RexNode operand)` Creates a call to the `MAX` aggregate function.
`RelBuilder.AggCall`	`min(RexNode operand)` Creates a call to the `MIN` aggregate function.
`RelBuilder.AggCall`	`min(String alias, RexNode operand)` Creates a call to the `MIN` aggregate function, optionally with an alias.
`RelBuilder`	`minus(boolean all)` Creates a `Minus` of the two most recent relational expressions on the stack.
`RelBuilder`	`minus(boolean all, int n)` Creates a `Minus` of the `n` most recent relational expressions on the stack.
`RexNode`	`not(RexNode operand)` Creates a NOT.
`RexNode`	`notEquals(RexNode operand0, RexNode operand1)` Creates a `<>`.
`RexNode`	`nullsFirst(RexNode node)` Converts a sort expression to nulls first.
`RexNode`	`nullsLast(RexNode node)` Converts a sort expression to nulls last.
`RexNode`	`or(Iterable<? extends RexNode> operands)` Creates an OR.
`RexNode`	`or(RexNode... operands)` Creates an OR.
`RexNode`	`patternAlter(Iterable<? extends RexNode> nodes)` Creates a call that creates alternate patterns; for use in `match(org.apache.calcite.rex.RexNode, boolean, boolean, java.util.Map<java.lang.String, org.apache.calcite.rex.RexNode>, java.lang.Iterable<? extends org.apache.calcite.rex.RexNode>, org.apache.calcite.rex.RexNode, java.util.Map<java.lang.String, ? extends java.util.SortedSet<java.lang.String>>, boolean, java.lang.Iterable<? extends org.apache.calcite.rex.RexNode>, java.lang.Iterable<? extends org.apache.calcite.rex.RexNode>, org.apache.calcite.rex.RexNode)`.
`RexNode`	`patternAlter(RexNode... nodes)` Creates a call that creates alternate patterns; for use in `match(org.apache.calcite.rex.RexNode, boolean, boolean, java.util.Map<java.lang.String, org.apache.calcite.rex.RexNode>, java.lang.Iterable<? extends org.apache.calcite.rex.RexNode>, org.apache.calcite.rex.RexNode, java.util.Map<java.lang.String, ? extends java.util.SortedSet<java.lang.String>>, boolean, java.lang.Iterable<? extends org.apache.calcite.rex.RexNode>, java.lang.Iterable<? extends org.apache.calcite.rex.RexNode>, org.apache.calcite.rex.RexNode)`.
`RexNode`	`patternConcat(Iterable<? extends RexNode> nodes)` Creates a call that concatenates patterns; for use in `match(org.apache.calcite.rex.RexNode, boolean, boolean, java.util.Map<java.lang.String, org.apache.calcite.rex.RexNode>, java.lang.Iterable<? extends org.apache.calcite.rex.RexNode>, org.apache.calcite.rex.RexNode, java.util.Map<java.lang.String, ? extends java.util.SortedSet<java.lang.String>>, boolean, java.lang.Iterable<? extends org.apache.calcite.rex.RexNode>, java.lang.Iterable<? extends org.apache.calcite.rex.RexNode>, org.apache.calcite.rex.RexNode)`.
`RexNode`	`patternConcat(RexNode... nodes)` Creates a call that concatenates patterns; for use in `match(org.apache.calcite.rex.RexNode, boolean, boolean, java.util.Map<java.lang.String, org.apache.calcite.rex.RexNode>, java.lang.Iterable<? extends org.apache.calcite.rex.RexNode>, org.apache.calcite.rex.RexNode, java.util.Map<java.lang.String, ? extends java.util.SortedSet<java.lang.String>>, boolean, java.lang.Iterable<? extends org.apache.calcite.rex.RexNode>, java.lang.Iterable<? extends org.apache.calcite.rex.RexNode>, org.apache.calcite.rex.RexNode)`.
`RexNode`	`patternExclude(RexNode node)` Creates a call that creates an exclude pattern; for use in `match(org.apache.calcite.rex.RexNode, boolean, boolean, java.util.Map<java.lang.String, org.apache.calcite.rex.RexNode>, java.lang.Iterable<? extends org.apache.calcite.rex.RexNode>, org.apache.calcite.rex.RexNode, java.util.Map<java.lang.String, ? extends java.util.SortedSet<java.lang.String>>, boolean, java.lang.Iterable<? extends org.apache.calcite.rex.RexNode>, java.lang.Iterable<? extends org.apache.calcite.rex.RexNode>, org.apache.calcite.rex.RexNode)`.
`RexNode`	`patternField(String alpha, RelDataType type, int i)` Creates a reference to a given field of the pattern.
`RexNode`	`patternPermute(Iterable<? extends RexNode> nodes)` Creates a call that creates permute patterns; for use in `match(org.apache.calcite.rex.RexNode, boolean, boolean, java.util.Map<java.lang.String, org.apache.calcite.rex.RexNode>, java.lang.Iterable<? extends org.apache.calcite.rex.RexNode>, org.apache.calcite.rex.RexNode, java.util.Map<java.lang.String, ? extends java.util.SortedSet<java.lang.String>>, boolean, java.lang.Iterable<? extends org.apache.calcite.rex.RexNode>, java.lang.Iterable<? extends org.apache.calcite.rex.RexNode>, org.apache.calcite.rex.RexNode)`.
`RexNode`	`patternPermute(RexNode... nodes)` Creates a call that creates permute patterns; for use in `match(org.apache.calcite.rex.RexNode, boolean, boolean, java.util.Map<java.lang.String, org.apache.calcite.rex.RexNode>, java.lang.Iterable<? extends org.apache.calcite.rex.RexNode>, org.apache.calcite.rex.RexNode, java.util.Map<java.lang.String, ? extends java.util.SortedSet<java.lang.String>>, boolean, java.lang.Iterable<? extends org.apache.calcite.rex.RexNode>, java.lang.Iterable<? extends org.apache.calcite.rex.RexNode>, org.apache.calcite.rex.RexNode)`.
`RexNode`	`patternQuantify(Iterable<? extends RexNode> nodes)` Creates a call that creates quantify patterns; for use in `match(org.apache.calcite.rex.RexNode, boolean, boolean, java.util.Map<java.lang.String, org.apache.calcite.rex.RexNode>, java.lang.Iterable<? extends org.apache.calcite.rex.RexNode>, org.apache.calcite.rex.RexNode, java.util.Map<java.lang.String, ? extends java.util.SortedSet<java.lang.String>>, boolean, java.lang.Iterable<? extends org.apache.calcite.rex.RexNode>, java.lang.Iterable<? extends org.apache.calcite.rex.RexNode>, org.apache.calcite.rex.RexNode)`.
`RexNode`	`patternQuantify(RexNode... nodes)` Creates a call that creates quantify patterns; for use in `match(org.apache.calcite.rex.RexNode, boolean, boolean, java.util.Map<java.lang.String, org.apache.calcite.rex.RexNode>, java.lang.Iterable<? extends org.apache.calcite.rex.RexNode>, org.apache.calcite.rex.RexNode, java.util.Map<java.lang.String, ? extends java.util.SortedSet<java.lang.String>>, boolean, java.lang.Iterable<? extends org.apache.calcite.rex.RexNode>, java.lang.Iterable<? extends org.apache.calcite.rex.RexNode>, org.apache.calcite.rex.RexNode)`.
`RelNode`	`peek()` Returns the relational expression at the top of the stack, but does not remove it.
`RelNode`	`peek(int n)` Returns the relational expression `n` positions from the top of the stack, but does not remove it.
`RelNode`	`peek(int inputCount, int inputOrdinal)` Returns the relational expression `n` positions from the top of the stack, but does not remove it.
`RelBuilder`	`permute(Mapping mapping)`
`RelBuilder`	`project(Iterable<? extends RexNode> nodes)` Creates a `Project` of the given list of expressions.
`RelBuilder`	`project(Iterable<? extends RexNode> nodes, Iterable<String> fieldNames)` Creates a `Project` of the given list of expressions and field names.
`RelBuilder`	`project(Iterable<? extends RexNode> nodes, Iterable<String> fieldNames, boolean force)` Creates a `Project` of the given list of expressions, using the given names.
`RelBuilder`	`project(RexNode... nodes)` Creates a `Project` of the given expressions.
`RelBuilder`	`projectExcept(Iterable<RexNode> expressions)` Creates a `Project` of all original fields, except the given list of expressions.
`RelBuilder`	`projectExcept(RexNode... expressions)` Creates a `Project` of all original fields, except the given expressions.
`RelBuilder`	`projectNamed(Iterable<? extends RexNode> nodes, Iterable<String> fieldNames, boolean force)` Creates a `Project` of the given expressions and field names, and optionally optimizing.
`RelBuilder`	`projectPlus(Iterable<RexNode> nodes)` Creates a `Project` of all original fields, plus the given list of expressions.
`RelBuilder`	`projectPlus(RexNode... nodes)` Creates a `Project` of all original fields, plus the given expressions.
`static RelBuilderFactory`	`proto(Context context)` Creates a `RelBuilderFactory`, a partially-created RelBuilder.
`static RelBuilderFactory`	`proto(Object... factories)` Creates a `RelBuilderFactory` that uses a given set of factories.
`RelBuilder`	`push(RelNode node)` Adds a relational expression to be the input to the next relational expression constructed.
`RelBuilder`	`pushAll(Iterable<? extends RelNode> nodes)` Pushes a collection of relational expressions.
`RelBuilder`	`rename(List<String> fieldNames)` Ensures that the field names match those given.
`RelBuilder`	`repeatUnion(String tableName, boolean all)` Creates a `RepeatUnion` associated to a `TransientTable` without a maximum number of iterations, i.e.
`RelBuilder`	`repeatUnion(String tableName, boolean all, int iterationLimit)` Creates a `RepeatUnion` associated to a `TransientTable` of the two most recent relational expressions on the stack.
`RelBuilder`	`scan(Iterable<String> tableNames)` Creates a `TableScan` of the table with a given name.
`RelBuilder`	`scan(String... tableNames)` Creates a `TableScan` of the table with a given name.
`RelBuilder`	`semiJoin(Iterable<? extends RexNode> conditions)` Creates a `Join` with `JoinRelType.SEMI`.
`RelBuilder`	`semiJoin(RexNode... conditions)` Creates a `Join` with `JoinRelType.SEMI`.
`protected boolean`	`shouldMergeProject()` Deprecated.
`RelBuilder`	`snapshot(RexNode period)` Creates a `Snapshot` of a given snapshot period.
`RelBuilder`	`sort(int... fields)` Creates a `Sort` by field ordinals.
`RelBuilder`	`sort(Iterable<? extends RexNode> nodes)` Creates a `Sort` by expressions.
`RelBuilder`	`sort(RelCollation collation)` Creates a `Sort` by specifying collations.
`RelBuilder`	`sort(RexNode... nodes)` Creates a `Sort` by expressions.
`RelBuilder`	`sortExchange(RelDistribution distribution, RelCollation collation)` Creates a SortExchange by distribution and collation.
`RelBuilder`	`sortLimit(int offset, int fetch, Iterable<? extends RexNode> nodes)` Creates a `Sort` by a list of expressions, with limit and offset.
`RelBuilder`	`sortLimit(int offset, int fetch, RexNode... nodes)` Creates a `Sort` by expressions, with limit and offset.
`RelBuilder.AggCall`	`sum(boolean distinct, String alias, RexNode operand)` Creates a call to the `SUM` aggregate function, optionally distinct and with an alias.
`RelBuilder.AggCall`	`sum(RexNode operand)` Creates a call to the `SUM` aggregate function.
`String`	`toString()` Converts this RelBuilder to a string.
`RelBuilder`	`transform(UnaryOperator<RelBuilder.Config> transform)` Creates a copy of this RelBuilder, with the same state as this, applying a transform to the config.
`RelBuilder`	`transientScan(String tableName)` Creates a `TableScan` on a `TransientTable` with the given name, using as type the top of the stack's type.
`RelBuilder`	`transientScan(String tableName, RelDataType rowType)` Creates a `TableScan` on a `TransientTable` with the given name and type.
`RelBuilder`	`uncollect(List<String> itemAliases, boolean withOrdinality)` Creates an `Uncollect` with given item aliases.
`RelBuilder`	`union(boolean all)` Creates a `Union` of the two most recent relational expressions on the stack.
`RelBuilder`	`union(boolean all, int n)` Creates a `Union` of the `n` most recent relational expressions on the stack.
`RelBuilder`	`values(Iterable<? extends List<RexLiteral>> tupleList, RelDataType rowType)` Creates a `Values` with a specified row type.
`RelBuilder`	`values(RelDataType rowType)` Creates a `Values` with a specified row type and zero rows.
`RelBuilder`	`values(RelDataType rowType, Object... columnValues)` Creates a `Values` with a specified row type.
`RelBuilder`	`values(String[] fieldNames, Object... values)` Creates a `Values`.
`RelBuilder`	`variable(Holder<RexCorrelVariable> v)` Creates a correlation variable for the current input, and writes it into a Holder.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Field Detail
  - cluster
```
protected final RelOptCluster cluster
```
  - relOptSchema
```
protected final RelOptSchema relOptSchema
```
- Constructor Detail
  - RelBuilder
```
protected RelBuilder(Context context,
                     RelOptCluster cluster,
                     RelOptSchema relOptSchema)
```
- Method Detail
  - create
```
public static RelBuilder create(FrameworkConfig config)
```
    Creates a RelBuilder.
  - transform
```
public RelBuilder transform(UnaryOperator<RelBuilder.Config> transform)
```
    Creates a copy of this RelBuilder, with the same state as this, applying a transform to the config.
  - toString
```
public String toString()
```
    Converts this RelBuilder to a string. The string is the string representation of all of the RelNodes on the stack.
    
    Overrides:
    
    toString in class Object
  - getTypeFactory
```
public RelDataTypeFactory getTypeFactory()
```
    Returns the type factory.
  - adoptConvention
```
public RelBuilder adoptConvention(Convention convention)
```
    Returns new RelBuilder that adopts the convention provided. RelNode will be created with such convention if corresponding factory is provided.
  - getRexBuilder
```
public RexBuilder getRexBuilder()
```
    Returns the builder for RexNode expressions.
  - proto
```
public static RelBuilderFactory proto(Context context)
```
    Creates a RelBuilderFactory, a partially-created RelBuilder. Just add a RelOptCluster and a RelOptSchema
  - proto
```
public static RelBuilderFactory proto(Object... factories)
```
    Creates a RelBuilderFactory that uses a given set of factories.
  - getCluster
```
public RelOptCluster getCluster()
```
  - getRelOptSchema
```
public RelOptSchema getRelOptSchema()
```
  - getScanFactory
```
public RelFactories.TableScanFactory getScanFactory()
```
  - push
```
public RelBuilder push(RelNode node)
```
    Adds a relational expression to be the input to the next relational expression constructed.
    This method is usual when you want to weave in relational expressions that are not supported by the builder. If, while creating such expressions, you need to use previously built expressions as inputs, call build() to pop those inputs.
  - pushAll
```
public RelBuilder pushAll(Iterable<? extends RelNode> nodes)
```
    Pushes a collection of relational expressions.
  - build
```
public RelNode build()
```
    Returns the final relational expression.
    Throws if the stack is empty.
  - peek
```
public RelNode peek()
```
    Returns the relational expression at the top of the stack, but does not remove it.
  - peek
```
public RelNode peek(int n)
```
    Returns the relational expression n positions from the top of the stack, but does not remove it.
  - peek
```
public RelNode peek(int inputCount,
                    int inputOrdinal)
```
    Returns the relational expression n positions from the top of the stack, but does not remove it.
  - literal
```
public RexNode literal(Object value)
```
    Creates a literal (constant expression).
  - variable
```
public RelBuilder variable(Holder<RexCorrelVariable> v)
```
    Creates a correlation variable for the current input, and writes it into a Holder.
  - field
```
public RexInputRef field(String fieldName)
```
    Creates a reference to a field by name.
    Equivalent to field(1, 0, fieldName).
    
    Parameters:
    
    fieldName - Field name
  - field
```
public RexInputRef field(int inputCount,
                         int inputOrdinal,
                         String fieldName)
```
    Creates a reference to a field of given input relational expression by name.
    
    Parameters:
    
    inputCount - Number of inputs
    
    inputOrdinal - Input ordinal
    
    fieldName - Field name
  - field
```
public RexInputRef field(int fieldOrdinal)
```
    Creates a reference to an input field by ordinal.
    Equivalent to field(1, 0, ordinal).
    
    Parameters:
    
    fieldOrdinal - Field ordinal
  - field
```
public RexInputRef field(int inputCount,
                         int inputOrdinal,
                         int fieldOrdinal)
```
    Creates a reference to a field of a given input relational expression by ordinal.
    
    Parameters:
    
    inputCount - Number of inputs
    
    inputOrdinal - Input ordinal
    
    fieldOrdinal - Field ordinal within input
  - field
```
public RexNode field(String alias,
                     String fieldName)
```
    Creates a reference to a field of the current record which originated in a relation with a given alias.
  - field
```
public RexNode field(int inputCount,
                     String alias,
                     String fieldName)
```
    Creates a reference to a field which originated in a relation with the given alias. Searches for the relation starting at the top of the stack.
  - field
```
public RexNode field(RexNode e,
                     String name)
```
    Returns a reference to a given field of a record-valued expression.
  - fields
```
public com.google.common.collect.ImmutableList<RexNode> fields()
```
    Returns references to the fields of the top input.
  - fields
```
public com.google.common.collect.ImmutableList<RexNode> fields(int inputCount,
                                                               int inputOrdinal)
```
    Returns references to the fields of a given input.
  - fields
```
public com.google.common.collect.ImmutableList<RexNode> fields(RelCollation collation)
```
    Returns references to fields for a given collation.
  - fields
```
public com.google.common.collect.ImmutableList<RexNode> fields(List<? extends Number> ordinals)
```
    Returns references to fields for a given list of input ordinals.
  - fields
```
public com.google.common.collect.ImmutableList<RexNode> fields(ImmutableBitSet ordinals)
```
    Returns references to fields for a given bit set of input ordinals.
  - fields
```
public com.google.common.collect.ImmutableList<RexNode> fields(Iterable<String> fieldNames)
```
    Returns references to fields identified by name.
  - fields
```
public com.google.common.collect.ImmutableList<RexNode> fields(Mappings.TargetMapping mapping)
```
    Returns references to fields identified by a mapping.
  - dot
```
public RexNode dot(RexNode node,
                   String fieldName)
```
    Creates an access to a field by name.
  - dot
```
public RexNode dot(RexNode node,
                   int fieldOrdinal)
```
    Creates an access to a field by ordinal.
  - call
```
@Nonnull
public RexNode call(SqlOperator operator,
                             RexNode... operands)
```
    Creates a call to a scalar operator.
  - call
```
@Nonnull
public RexNode call(SqlOperator operator,
                             Iterable<? extends RexNode> operands)
```
    Creates a call to a scalar operator.
  - and
```
public RexNode and(RexNode... operands)
```
    Creates an AND.
  - and
```
public RexNode and(Iterable<? extends RexNode> operands)
```
    Creates an AND.
    Simplifies the expression a little: e AND TRUE becomes e; e AND e2 AND NOT e becomes e2.
  - or
```
public RexNode or(RexNode... operands)
```
    Creates an OR.
  - or
```
public RexNode or(Iterable<? extends RexNode> operands)
```
    Creates an OR.
  - not
```
public RexNode not(RexNode operand)
```
    Creates a NOT.
  - equals
```
public RexNode equals(RexNode operand0,
                      RexNode operand1)
```
    Creates an =.
  - notEquals
```
public RexNode notEquals(RexNode operand0,
                         RexNode operand1)
```
    Creates a <>.
  - isNull
```
public RexNode isNull(RexNode operand)
```
    Creates a IS NULL.
  - isNotNull
```
public RexNode isNotNull(RexNode operand)
```
    Creates a IS NOT NULL.
  - cast
```
public RexNode cast(RexNode expr,
                    SqlTypeName typeName)
```
    Creates an expression that casts an expression to a given type.
  - cast
```
public RexNode cast(RexNode expr,
                    SqlTypeName typeName,
                    int precision)
```
    Creates an expression that casts an expression to a type with a given name and precision or length.
  - cast
```
public RexNode cast(RexNode expr,
                    SqlTypeName typeName,
                    int precision,
                    int scale)
```
    Creates an expression that casts an expression to a type with a given name, precision and scale.
  - alias
```
public RexNode alias(RexNode expr,
                     String alias)
```
    Returns an expression wrapped in an alias.
    This method is idempotent: If the expression is already wrapped in the correct alias, does nothing; if wrapped in an incorrect alias, removes the incorrect alias and applies the correct alias.
    
    See Also:
    
    project(org.apache.calcite.rex.RexNode...)
  - desc
```
public RexNode desc(RexNode node)
```
    Converts a sort expression to descending.
  - nullsLast
```
public RexNode nullsLast(RexNode node)
```
    Converts a sort expression to nulls last.
  - nullsFirst
```
public RexNode nullsFirst(RexNode node)
```
    Converts a sort expression to nulls first.
  - groupKey
```
public RelBuilder.GroupKey groupKey()
```
    Creates an empty group key.
  - groupKey
```
public RelBuilder.GroupKey groupKey(RexNode... nodes)
```
    Creates a group key.
  - groupKey
```
public RelBuilder.GroupKey groupKey(Iterable<? extends RexNode> nodes)
```
    Creates a group key.
  - groupKey
```
public RelBuilder.GroupKey groupKey(Iterable<? extends RexNode> nodes,
                                    Iterable<? extends Iterable<? extends RexNode>> nodeLists)
```
    Creates a group key with grouping sets.
  - groupKey
```
@Deprecated
public RelBuilder.GroupKey groupKey(Iterable<? extends RexNode> nodes,
                                                boolean indicator,
                                                Iterable<? extends Iterable<? extends RexNode>> nodeLists)
```
    Deprecated. Now that indicator is deprecated, use groupKey(Iterable, Iterable), which has the same behavior as calling this method with indicator = false.
  - groupKey
```
public RelBuilder.GroupKey groupKey(int... fieldOrdinals)
```
    Creates a group key of fields identified by ordinal.
  - groupKey
```
public RelBuilder.GroupKey groupKey(String... fieldNames)
```
    Creates a group key of fields identified by name.
  - groupKey
```
public RelBuilder.GroupKey groupKey(@Nonnull
                                    ImmutableBitSet groupSet)
```
    Creates a group key, identified by field positions in the underlying relational expression.
    This method of creating a group key does not allow you to group on new expressions, only column projections, but is efficient, especially when you are coming from an existing Aggregate.
  - groupKey
```
public RelBuilder.GroupKey groupKey(ImmutableBitSet groupSet,
                                    @Nonnull
                                    Iterable<? extends ImmutableBitSet> groupSets)
```
    Creates a group key with grouping sets, both identified by field positions in the underlying relational expression.
    This method of creating a group key does not allow you to group on new expressions, only column projections, but is efficient, especially when you are coming from an existing Aggregate.
  - groupKey
```
@Deprecated
public RelBuilder.GroupKey groupKey(ImmutableBitSet groupSet,
                                                com.google.common.collect.ImmutableList<ImmutableBitSet> groupSets)
```
    Deprecated. Use groupKey(ImmutableBitSet) or groupKey(ImmutableBitSet, Iterable).
  - groupKey
```
@Deprecated
public RelBuilder.GroupKey groupKey(ImmutableBitSet groupSet,
                                                boolean indicator,
                                                com.google.common.collect.ImmutableList<ImmutableBitSet> groupSets)
```
    Deprecated. Use groupKey(ImmutableBitSet, Iterable).
  - aggregateCall
```
@Deprecated
public RelBuilder.AggCall aggregateCall(SqlAggFunction aggFunction,
                                                    boolean distinct,
                                                    RexNode filter,
                                                    String alias,
                                                    RexNode... operands)
```
    Deprecated.
  - aggregateCall
```
@Deprecated
public RelBuilder.AggCall aggregateCall(SqlAggFunction aggFunction,
                                                    boolean distinct,
                                                    boolean approximate,
                                                    RexNode filter,
                                                    String alias,
                                                    RexNode... operands)
```
    Deprecated.
  - aggregateCall
```
@Deprecated
public RelBuilder.AggCall aggregateCall(SqlAggFunction aggFunction,
                                                    boolean distinct,
                                                    RexNode filter,
                                                    String alias,
                                                    Iterable<? extends RexNode> operands)
```
    Deprecated.
  - aggregateCall
```
@Deprecated
public RelBuilder.AggCall aggregateCall(SqlAggFunction aggFunction,
                                                    boolean distinct,
                                                    boolean approximate,
                                                    RexNode filter,
                                                    String alias,
                                                    Iterable<? extends RexNode> operands)
```
    Deprecated.
  - aggregateCall
```
public RelBuilder.AggCall aggregateCall(SqlAggFunction aggFunction,
                                        Iterable<? extends RexNode> operands)
```
    Creates a call to an aggregate function.
    To add other operands, apply RelBuilder.AggCall.distinct(), RelBuilder.AggCall.approximate(boolean), filter(RexNode...), RelBuilder.AggCall.sort(java.lang.Iterable<org.apache.calcite.rex.RexNode>), RelBuilder.AggCall.as(java.lang.String) to the result.
  - aggregateCall
```
public RelBuilder.AggCall aggregateCall(SqlAggFunction aggFunction,
                                        RexNode... operands)
```
    Creates a call to an aggregate function.
    To add other operands, apply RelBuilder.AggCall.distinct(), RelBuilder.AggCall.approximate(boolean), filter(RexNode...), RelBuilder.AggCall.sort(java.lang.Iterable<org.apache.calcite.rex.RexNode>), RelBuilder.AggCall.as(java.lang.String) to the result.
  - aggregateCall
```
protected RelBuilder.AggCall aggregateCall(SqlAggFunction aggFunction,
                                           boolean distinct,
                                           boolean approximate,
                                           boolean ignoreNulls,
                                           RexNode filter,
                                           com.google.common.collect.ImmutableList<RexNode> orderKeys,
                                           String alias,
                                           com.google.common.collect.ImmutableList<RexNode> operands)
```
    Creates a call to an aggregate function with all applicable operands.
  - count
```
public RelBuilder.AggCall count(RexNode... operands)
```
    Creates a call to the COUNT aggregate function.
  - count
```
public RelBuilder.AggCall count(Iterable<? extends RexNode> operands)
```
    Creates a call to the COUNT aggregate function.
  - count
```
public RelBuilder.AggCall count(boolean distinct,
                                String alias,
                                RexNode... operands)
```
    Creates a call to the COUNT aggregate function, optionally distinct and with an alias.
  - count
```
public RelBuilder.AggCall count(boolean distinct,
                                String alias,
                                Iterable<? extends RexNode> operands)
```
    Creates a call to the COUNT aggregate function, optionally distinct and with an alias.
  - countStar
```
public RelBuilder.AggCall countStar(String alias)
```
    Creates a call to the COUNT(*) aggregate function.
  - sum
```
public RelBuilder.AggCall sum(RexNode operand)
```
    Creates a call to the SUM aggregate function.
  - sum
```
public RelBuilder.AggCall sum(boolean distinct,
                              String alias,
                              RexNode operand)
```
    Creates a call to the SUM aggregate function, optionally distinct and with an alias.
  - avg
```
public RelBuilder.AggCall avg(RexNode operand)
```
    Creates a call to the AVG aggregate function.
  - avg
```
public RelBuilder.AggCall avg(boolean distinct,
                              String alias,
                              RexNode operand)
```
    Creates a call to the AVG aggregate function, optionally distinct and with an alias.
  - min
```
public RelBuilder.AggCall min(RexNode operand)
```
    Creates a call to the MIN aggregate function.
  - min
```
public RelBuilder.AggCall min(String alias,
                              RexNode operand)
```
    Creates a call to the MIN aggregate function, optionally with an alias.
  - max
```
public RelBuilder.AggCall max(RexNode operand)
```
    Creates a call to the MAX aggregate function, optionally with an alias.
  - max
```
public RelBuilder.AggCall max(String alias,
                              RexNode operand)
```
    Creates a call to the MAX aggregate function.
  - patternField
```
public RexNode patternField(String alpha,
                            RelDataType type,
                            int i)
```
    Creates a reference to a given field of the pattern.
    
    Parameters:
    
    alpha - the pattern name
    
    type - Type of field
    
    i - Ordinal of field
    
    Returns:
    
    Reference to field of pattern
  - patternConcat
```
public RexNode patternConcat(Iterable<? extends RexNode> nodes)
```
    Creates a call that concatenates patterns; for use in match(org.apache.calcite.rex.RexNode, boolean, boolean, java.util.Map<java.lang.String, org.apache.calcite.rex.RexNode>, java.lang.Iterable<? extends org.apache.calcite.rex.RexNode>, org.apache.calcite.rex.RexNode, java.util.Map<java.lang.String, ? extends java.util.SortedSet<java.lang.String>>, boolean, java.lang.Iterable<? extends org.apache.calcite.rex.RexNode>, java.lang.Iterable<? extends org.apache.calcite.rex.RexNode>, org.apache.calcite.rex.RexNode).
  - patternConcat
```
public RexNode patternConcat(RexNode... nodes)
```
    Creates a call that concatenates patterns; for use in match(org.apache.calcite.rex.RexNode, boolean, boolean, java.util.Map<java.lang.String, org.apache.calcite.rex.RexNode>, java.lang.Iterable<? extends org.apache.calcite.rex.RexNode>, org.apache.calcite.rex.RexNode, java.util.Map<java.lang.String, ? extends java.util.SortedSet<java.lang.String>>, boolean, java.lang.Iterable<? extends org.apache.calcite.rex.RexNode>, java.lang.Iterable<? extends org.apache.calcite.rex.RexNode>, org.apache.calcite.rex.RexNode).
  - patternAlter
```
public RexNode patternAlter(Iterable<? extends RexNode> nodes)
```
    Creates a call that creates alternate patterns; for use in match(org.apache.calcite.rex.RexNode, boolean, boolean, java.util.Map<java.lang.String, org.apache.calcite.rex.RexNode>, java.lang.Iterable<? extends org.apache.calcite.rex.RexNode>, org.apache.calcite.rex.RexNode, java.util.Map<java.lang.String, ? extends java.util.SortedSet<java.lang.String>>, boolean, java.lang.Iterable<? extends org.apache.calcite.rex.RexNode>, java.lang.Iterable<? extends org.apache.calcite.rex.RexNode>, org.apache.calcite.rex.RexNode).
  - patternAlter
```
public RexNode patternAlter(RexNode... nodes)
```
    Creates a call that creates alternate patterns; for use in match(org.apache.calcite.rex.RexNode, boolean, boolean, java.util.Map<java.lang.String, org.apache.calcite.rex.RexNode>, java.lang.Iterable<? extends org.apache.calcite.rex.RexNode>, org.apache.calcite.rex.RexNode, java.util.Map<java.lang.String, ? extends java.util.SortedSet<java.lang.String>>, boolean, java.lang.Iterable<? extends org.apache.calcite.rex.RexNode>, java.lang.Iterable<? extends org.apache.calcite.rex.RexNode>, org.apache.calcite.rex.RexNode).
  - patternQuantify
```
public RexNode patternQuantify(Iterable<? extends RexNode> nodes)
```
    Creates a call that creates quantify patterns; for use in match(org.apache.calcite.rex.RexNode, boolean, boolean, java.util.Map<java.lang.String, org.apache.calcite.rex.RexNode>, java.lang.Iterable<? extends org.apache.calcite.rex.RexNode>, org.apache.calcite.rex.RexNode, java.util.Map<java.lang.String, ? extends java.util.SortedSet<java.lang.String>>, boolean, java.lang.Iterable<? extends org.apache.calcite.rex.RexNode>, java.lang.Iterable<? extends org.apache.calcite.rex.RexNode>, org.apache.calcite.rex.RexNode).
  - patternQuantify
```
public RexNode patternQuantify(RexNode... nodes)
```
    Creates a call that creates quantify patterns; for use in match(org.apache.calcite.rex.RexNode, boolean, boolean, java.util.Map<java.lang.String, org.apache.calcite.rex.RexNode>, java.lang.Iterable<? extends org.apache.calcite.rex.RexNode>, org.apache.calcite.rex.RexNode, java.util.Map<java.lang.String, ? extends java.util.SortedSet<java.lang.String>>, boolean, java.lang.Iterable<? extends org.apache.calcite.rex.RexNode>, java.lang.Iterable<? extends org.apache.calcite.rex.RexNode>, org.apache.calcite.rex.RexNode).
  - patternPermute
```
public RexNode patternPermute(Iterable<? extends RexNode> nodes)
```
    Creates a call that creates permute patterns; for use in match(org.apache.calcite.rex.RexNode, boolean, boolean, java.util.Map<java.lang.String, org.apache.calcite.rex.RexNode>, java.lang.Iterable<? extends org.apache.calcite.rex.RexNode>, org.apache.calcite.rex.RexNode, java.util.Map<java.lang.String, ? extends java.util.SortedSet<java.lang.String>>, boolean, java.lang.Iterable<? extends org.apache.calcite.rex.RexNode>, java.lang.Iterable<? extends org.apache.calcite.rex.RexNode>, org.apache.calcite.rex.RexNode).
  - patternPermute
```
public RexNode patternPermute(RexNode... nodes)
```
    Creates a call that creates permute patterns; for use in match(org.apache.calcite.rex.RexNode, boolean, boolean, java.util.Map<java.lang.String, org.apache.calcite.rex.RexNode>, java.lang.Iterable<? extends org.apache.calcite.rex.RexNode>, org.apache.calcite.rex.RexNode, java.util.Map<java.lang.String, ? extends java.util.SortedSet<java.lang.String>>, boolean, java.lang.Iterable<? extends org.apache.calcite.rex.RexNode>, java.lang.Iterable<? extends org.apache.calcite.rex.RexNode>, org.apache.calcite.rex.RexNode).
  - patternExclude
```
public RexNode patternExclude(RexNode node)
```
    Creates a call that creates an exclude pattern; for use in match(org.apache.calcite.rex.RexNode, boolean, boolean, java.util.Map<java.lang.String, org.apache.calcite.rex.RexNode>, java.lang.Iterable<? extends org.apache.calcite.rex.RexNode>, org.apache.calcite.rex.RexNode, java.util.Map<java.lang.String, ? extends java.util.SortedSet<java.lang.String>>, boolean, java.lang.Iterable<? extends org.apache.calcite.rex.RexNode>, java.lang.Iterable<? extends org.apache.calcite.rex.RexNode>, org.apache.calcite.rex.RexNode).
  - scan
```
public RelBuilder scan(Iterable<String> tableNames)
```
    Creates a TableScan of the table with a given name.
    Throws if the table does not exist.
    Returns this builder.
    
    Parameters:
    
    tableNames - Name of table (can optionally be qualified)
  - scan
```
public RelBuilder scan(String... tableNames)
```
    Creates a TableScan of the table with a given name.
    Throws if the table does not exist.
    Returns this builder.
    
    Parameters:
    
    tableNames - Name of table (can optionally be qualified)
  - snapshot
```
public RelBuilder snapshot(RexNode period)
```
    Creates a Snapshot of a given snapshot period.
    Returns this builder.
    
    Parameters:
    
    period - Name of table (can optionally be qualified)
  - cursor
```
public RexNode cursor(int inputCount,
                      int ordinal)
```
    Creates a RexCall to the CURSOR function by ordinal.
    
    Parameters:
    
    inputCount - Number of inputs
    
    ordinal - The reference to the relational input
    
    Returns:
    
    RexCall to CURSOR function
  - functionScan
```
public RelBuilder functionScan(SqlOperator operator,
                               int inputCount,
                               RexNode... operands)
```
    Creates a TableFunctionScan.
  - functionScan
```
public RelBuilder functionScan(SqlOperator operator,
                               int inputCount,
                               Iterable<? extends RexNode> operands)
```
    Creates a TableFunctionScan.
  - filter
```
public RelBuilder filter(RexNode... predicates)
```
    Creates a Filter of an array of predicates.
    The predicates are combined using AND, and optimized in a similar way to the and(org.apache.calcite.rex.RexNode...) method. If the result is TRUE no filter is created.
  - filter
```
public RelBuilder filter(Iterable<? extends RexNode> predicates)
```
    Creates a Filter of a list of predicates.
    The predicates are combined using AND, and optimized in a similar way to the and(org.apache.calcite.rex.RexNode...) method. If the result is TRUE no filter is created.
  - filter
```
public RelBuilder filter(Iterable<CorrelationId> variablesSet,
                         RexNode... predicates)
```
    Creates a Filter of a list of correlation variables and an array of predicates.
    The predicates are combined using AND, and optimized in a similar way to the and(org.apache.calcite.rex.RexNode...) method. If the result is TRUE no filter is created.
  - filter
```
public RelBuilder filter(Iterable<CorrelationId> variablesSet,
                         Iterable<? extends RexNode> predicates)
```
    Creates a Filter of a list of correlation variables and a list of predicates.
    The predicates are combined using AND, and optimized in a similar way to the and(org.apache.calcite.rex.RexNode...) method. If the result is TRUE no filter is created.
  - project
```
public RelBuilder project(RexNode... nodes)
```
    Creates a Project of the given expressions.
  - project
```
public RelBuilder project(Iterable<? extends RexNode> nodes)
```
    Creates a Project of the given list of expressions.
    Infers names as would project(Iterable, Iterable) if all suggested names were null.
    
    Parameters:
    
    nodes - Expressions
  - project
```
public RelBuilder project(Iterable<? extends RexNode> nodes,
                          Iterable<String> fieldNames)
```
    Creates a Project of the given list of expressions and field names.
    
    Parameters:
    
    nodes - Expressions
    
    fieldNames - field names for expressions
  - project
```
public RelBuilder project(Iterable<? extends RexNode> nodes,
                          Iterable<String> fieldNames,
                          boolean force)
```
    Creates a Project of the given list of expressions, using the given names.
    Names are deduced as follows:
    - If the length of fieldNames is greater than the index of the current entry in nodes, and the entry in fieldNames is not null, uses it; otherwise
    - If an expression projects an input field, or is a cast an input field, uses the input field name; otherwise
    - If an expression is a call to SqlStdOperatorTable.AS (see alias(org.apache.calcite.rex.RexNode, java.lang.String)), removes the call but uses the intended alias.
    After the field names have been inferred, makes the field names unique by appending numeric suffixes.
    Parameters:
    
    nodes - Expressions
    
    fieldNames - Suggested field names
    
    force - create project even if it is identity
  - projectPlus
```
public RelBuilder projectPlus(RexNode... nodes)
```
    Creates a Project of all original fields, plus the given expressions.
  - projectPlus
```
public RelBuilder projectPlus(Iterable<RexNode> nodes)
```
    Creates a Project of all original fields, plus the given list of expressions.
  - projectExcept
```
public RelBuilder projectExcept(RexNode... expressions)
```
    Creates a Project of all original fields, except the given expressions.
    
    Throws:
    
    IllegalArgumentException - if the given expressions contain duplicates or there is an expression that does not match an existing field
  - projectExcept
```
public RelBuilder projectExcept(Iterable<RexNode> expressions)
```
    Creates a Project of all original fields, except the given list of expressions.
    
    Throws:
    
    IllegalArgumentException - if the given expressions contain duplicates or there is an expression that does not match an existing field
  - shouldMergeProject
```
@Deprecated
protected boolean shouldMergeProject()
```
    Deprecated.
    
    Whether to attempt to merge consecutive Project operators.
    The default implementation returns true; sub-classes may disable merge by overriding to return false.
  - projectNamed
```
public RelBuilder projectNamed(Iterable<? extends RexNode> nodes,
                               Iterable<String> fieldNames,
                               boolean force)
```
    Creates a Project of the given expressions and field names, and optionally optimizing.
    If fieldNames is null, or if a particular entry in fieldNames is null, derives field names from the input expressions.
    If force is false, and the input is a Project, and the expressions make the trivial projection ($0, $1, ...), modifies the input.
    
    Parameters:
    
    nodes - Expressions
    
    fieldNames - Suggested field names, or null to generate
    
    force - Whether to create a renaming Project if the projections are trivial
  - uncollect
```
public RelBuilder uncollect(List<String> itemAliases,
                            boolean withOrdinality)
```
    Creates an Uncollect with given item aliases.
    
    Parameters:
    
    itemAliases - Operand item aliases, never null
    
    withOrdinality - If withOrdinality, the output contains an extra ORDINALITY column
  - rename
```
public RelBuilder rename(List<String> fieldNames)
```
    Ensures that the field names match those given.
    If all fields have the same name, adds nothing; if any fields do not have the same name, adds a Project.
    Note that the names can be short-lived. Other RelBuilder operations make no guarantees about the field names of the rows they produce.
    
    Parameters:
    
    fieldNames - List of desired field names; may contain null values or have fewer fields than the current row type
  - distinct
```
public RelBuilder distinct()
```
    Creates an Aggregate that makes the relational expression distinct on all fields.
  - aggregate
```
public RelBuilder aggregate(RelBuilder.GroupKey groupKey,
                            RelBuilder.AggCall... aggCalls)
```
    Creates an Aggregate with an array of calls.
  - aggregate
```
public RelBuilder aggregate(RelBuilder.GroupKey groupKey,
                            List<AggregateCall> aggregateCalls)
```
    Creates an Aggregate with an array of AggregateCalls.
  - aggregate
```
public RelBuilder aggregate(RelBuilder.GroupKey groupKey,
                            Iterable<RelBuilder.AggCall> aggCalls)
```
    Creates an Aggregate with multiple calls.
  - union
```
public RelBuilder union(boolean all)
```
    Creates a Union of the two most recent relational expressions on the stack.
    
    Parameters:
    
    all - Whether to create UNION ALL
  - union
```
public RelBuilder union(boolean all,
                        int n)
```
    Creates a Union of the n most recent relational expressions on the stack.
    
    Parameters:
    
    all - Whether to create UNION ALL
    
    n - Number of inputs to the UNION operator
  - intersect
```
public RelBuilder intersect(boolean all)
```
    Creates an Intersect of the two most recent relational expressions on the stack.
    
    Parameters:
    
    all - Whether to create INTERSECT ALL
  - intersect
```
public RelBuilder intersect(boolean all,
                            int n)
```
    Creates an Intersect of the n most recent relational expressions on the stack.
    
    Parameters:
    
    all - Whether to create INTERSECT ALL
    
    n - Number of inputs to the INTERSECT operator
  - minus
```
public RelBuilder minus(boolean all)
```
    Creates a Minus of the two most recent relational expressions on the stack.
    
    Parameters:
    
    all - Whether to create EXCEPT ALL
  - minus
```
public RelBuilder minus(boolean all,
                        int n)
```
    Creates a Minus of the n most recent relational expressions on the stack.
    
    Parameters:
    
    all - Whether to create EXCEPT ALL
  - transientScan
```
public RelBuilder transientScan(String tableName)
```
    Creates a TableScan on a TransientTable with the given name, using as type the top of the stack's type.
    
    Parameters:
    
    tableName - table name
  - transientScan
```
public RelBuilder transientScan(String tableName,
                                RelDataType rowType)
```
    Creates a TableScan on a TransientTable with the given name and type.
    
    Parameters:
    
    tableName - table name
    
    rowType - row type of the table
  - repeatUnion
```
public RelBuilder repeatUnion(String tableName,
                              boolean all)
```
    Creates a RepeatUnion associated to a TransientTable without a maximum number of iterations, i.e. repeatUnion(tableName, all, -1).
    
    Parameters:
    
    tableName - name of the TransientTable associated to the RepeatUnion
    
    all - whether duplicates will be considered or not
  - repeatUnion
```
public RelBuilder repeatUnion(String tableName,
                              boolean all,
                              int iterationLimit)
```
    Creates a RepeatUnion associated to a TransientTable of the two most recent relational expressions on the stack.
    Warning: if these relational expressions are not correctly defined, this operation might lead to an infinite loop.
    The generated RepeatUnion operates as follows:
    - Evaluate its left term once, propagating the results into the TransientTable;
    - Evaluate its right term (which may contain a TableScan on the TransientTable) over and over until it produces no more results (or until an optional maximum number of iterations is reached). On each iteration, the results are propagated into the TransientTable, overwriting the results from the previous one.
    Parameters:
    
    tableName - Name of the TransientTable associated to the RepeatUnion
    
    all - Whether duplicates are considered
    
    iterationLimit - Maximum number of iterations; negative value means no limit
  - join
```
public RelBuilder join(JoinRelType joinType,
                       RexNode condition0,
                       RexNode... conditions)
```
    Creates a Join with an array of conditions.
  - join
```
public RelBuilder join(JoinRelType joinType,
                       Iterable<? extends RexNode> conditions)
```
    Creates a Join with multiple conditions.
  - join
```
public RelBuilder join(JoinRelType joinType,
                       RexNode condition)
```
    Creates a Join with one condition.
  - join
```
public RelBuilder join(JoinRelType joinType,
                       RexNode condition,
                       Set<CorrelationId> variablesSet)
```
    Creates a Join with correlating variables.
  - correlate
```
public RelBuilder correlate(JoinRelType joinType,
                            CorrelationId correlationId,
                            RexNode... requiredFields)
```
    Creates a Correlate with a CorrelationId and an array of fields that are used by correlation.
  - correlate
```
public RelBuilder correlate(JoinRelType joinType,
                            CorrelationId correlationId,
                            Iterable<? extends RexNode> requiredFields)
```
    Creates a Correlate with a CorrelationId and a list of fields that are used by correlation.
  - join
```
public RelBuilder join(JoinRelType joinType,
                       String... fieldNames)
```
    Creates a Join using USING syntax.
    For each of the field names, both left and right inputs must have a field of that name. Constructs a join condition that the left and right fields are equal.
    
    Parameters:
    
    joinType - Join type
    
    fieldNames - Field names
  - semiJoin
```
public RelBuilder semiJoin(Iterable<? extends RexNode> conditions)
```
    Creates a Join with JoinRelType.SEMI.
    A semi-join is a form of join that combines two relational expressions according to some condition, and outputs only rows from the left input for which at least one row from the right input matches. It only outputs columns from the left input, and ignores duplicates on the right.
    For example, EMP semi-join DEPT finds all EMP records that do not have a corresponding DEPT record, similar to the following SQL:
    SELECT * FROM EMP WHERE EXISTS (SELECT 1 FROM DEPT WHERE DEPT.DEPTNO = EMP.DEPTNO)
  - semiJoin
```
public RelBuilder semiJoin(RexNode... conditions)
```
    Creates a Join with JoinRelType.SEMI.
    
    See Also:
    
    semiJoin(Iterable)
  - antiJoin
```
public RelBuilder antiJoin(Iterable<? extends RexNode> conditions)
```
    Creates an anti-join.
    An anti-join is a form of join that combines two relational expressions according to some condition, but outputs only rows from the left input for which no rows from the right input match.
    For example, EMP anti-join DEPT finds all EMP records that do not have a corresponding DEPT record, similar to the following SQL:
    SELECT * FROM EMP WHERE NOT EXISTS (SELECT 1 FROM DEPT WHERE DEPT.DEPTNO = EMP.DEPTNO)
  - antiJoin
```
public RelBuilder antiJoin(RexNode... conditions)
```
    Creates an anti-join.
    
    See Also:
    
    antiJoin(Iterable)
  - as
```
public RelBuilder as(String alias)
```
    Assigns a table alias to the top entry on the stack.
  - values
```
public RelBuilder values(String[] fieldNames,
                         Object... values)
```
    Creates a Values.
    The values array must have the same number of entries as fieldNames, or an integer multiple if you wish to create multiple rows.
    If there are zero rows, or if all values of a any column are null, this method cannot deduce the type of columns. For these cases, call values(Iterable, RelDataType).
    
    Parameters:
    
    fieldNames - Field names
    
    values - Values
  - empty
```
public RelBuilder empty()
```
    Creates a relational expression that reads from an input and throws all of the rows away.
    Note that this method always pops one relational expression from the stack. values, in contrast, does not pop any relational expressions, and always produces a leaf.
    The default implementation creates a Values with the same specified row type and aliases as the input, and ignores the input entirely. But schema-on-query systems such as Drill might override this method to create a relation expression that retains the input, just to read its schema.
  - values
```
public RelBuilder values(RelDataType rowType,
                         Object... columnValues)
```
    Creates a Values with a specified row type.
    This method can handle cases that values(String[], Object...) cannot, such as all values of a column being null, or there being zero rows.
    
    Parameters:
    
    rowType - Row type
    
    columnValues - Values
  - values
```
public RelBuilder values(Iterable<? extends List<RexLiteral>> tupleList,
                         RelDataType rowType)
```
    Creates a Values with a specified row type.
    This method can handle cases that values(String[], Object...) cannot, such as all values of a column being null, or there being zero rows.
    
    Parameters:
    
    tupleList - Tuple list
    
    rowType - Row type
  - values
```
public RelBuilder values(RelDataType rowType)
```
    Creates a Values with a specified row type and zero rows.
    
    Parameters:
    
    rowType - Row type
  - limit
```
public RelBuilder limit(int offset,
                        int fetch)
```
    Creates a limit without a sort.
  - exchange
```
public RelBuilder exchange(RelDistribution distribution)
```
    Creates an Exchange by distribution.
  - sortExchange
```
public RelBuilder sortExchange(RelDistribution distribution,
                               RelCollation collation)
```
    Creates a SortExchange by distribution and collation.
  - sort
```
public RelBuilder sort(int... fields)
```
    Creates a Sort by field ordinals.
    Negative fields mean descending: -1 means field(0) descending, -2 means field(1) descending, etc.
  - sort
```
public RelBuilder sort(RexNode... nodes)
```
    Creates a Sort by expressions.
  - sort
```
public RelBuilder sort(Iterable<? extends RexNode> nodes)
```
    Creates a Sort by expressions.
  - sortLimit
```
public RelBuilder sortLimit(int offset,
                            int fetch,
                            RexNode... nodes)
```
    Creates a Sort by expressions, with limit and offset.
  - sort
```
public RelBuilder sort(RelCollation collation)
```
    Creates a Sort by specifying collations.
  - sortLimit
```
public RelBuilder sortLimit(int offset,
                            int fetch,
                            Iterable<? extends RexNode> nodes)
```
    Creates a Sort by a list of expressions, with limit and offset.
    
    Parameters:
    
    offset - Number of rows to skip; non-positive means don't skip any
    
    fetch - Maximum number of rows to fetch; negative means no limit
    
    nodes - Sort expressions
  - convert
```
public RelBuilder convert(RelDataType castRowType,
                          boolean rename)
```
    Creates a projection that converts the current relational expression's output to a desired row type.
    
    Parameters:
    
    castRowType - row type after cast
    
    rename - if true, use field names from castRowType; if false, preserve field names from rel
  - permute
```
public RelBuilder permute(Mapping mapping)
```
  - match
```
public RelBuilder match(RexNode pattern,
                        boolean strictStart,
                        boolean strictEnd,
                        Map<String,RexNode> patternDefinitions,
                        Iterable<? extends RexNode> measureList,
                        RexNode after,
                        Map<String,? extends SortedSet<String>> subsets,
                        boolean allRows,
                        Iterable<? extends RexNode> partitionKeys,
                        Iterable<? extends RexNode> orderKeys,
                        RexNode interval)
```
    Creates a Match.
  - hints
```
public RelBuilder hints(RelHint... hints)
```
    Attaches an array of hints to the stack top relational expression.
    The redundant hints would be eliminated.
    
    Parameters:
    
    hints - Hints
    
    Throws:
    
    AssertionError - if the top relational expression does not implement Hintable
  - hints
```
public RelBuilder hints(Iterable<RelHint> hints)
```
    Attaches multiple hints to the stack top relational expression.
    The redundant hints would be eliminated.
    
    Parameters:
    
    hints - Hints
    
    Throws:
    
    AssertionError - if the top relational expression does not implement Hintable
  - clear
```
public void clear()
```
    Clears the stack.
    The builder's state is now the same as when it was created.

Class RelBuilder

Nested Class Summary

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

cluster

relOptSchema

Constructor Detail

RelBuilder

Method Detail

create

transform

toString

getTypeFactory

adoptConvention

getRexBuilder

proto

proto

getCluster

getRelOptSchema

getScanFactory

push

pushAll

build

peek

peek

peek

literal

variable

field

field

field

field

field

field

field

fields

fields

fields

fields

fields

fields

fields

dot

dot

call

call

and

and

or

or

not

equals

notEquals

isNull

isNotNull

cast

cast

cast

alias

desc

nullsLast

nullsFirst

groupKey

groupKey

groupKey

groupKey

groupKey

groupKey

groupKey

groupKey

groupKey

groupKey

groupKey

aggregateCall

aggregateCall

aggregateCall

aggregateCall