Package org.apache.calcite.sql.fun

Class SqlRandIntegerFunction

java.lang.Object

org.apache.calcite.sql.SqlOperator

org.apache.calcite.sql.SqlFunction

org.apache.calcite.sql.fun.SqlRandIntegerFunction

public class SqlRandIntegerFunction
extends SqlFunction

The RAND_INTEGER function. There are two overloads:

• RAND_INTEGER(bound) returns a random integer between 0 and bound - 1
• RAND_INTEGER(seed, bound) returns a random integer between 0 and bound - 1, initializing the random number generator with seed on first call

Field Summary

Fields inherited from class org.apache.calcite.sql.SqlOperator

kind, MDX_PRECEDENCE, NL

Constructor Summary

Constructors

Constructor	Description
SqlRandIntegerFunction()

Method Summary

Modifier and Type	Method	Description
boolean	isDeterministic()	Returns whether a call to this operator is guaranteed to always return the same result given the same operands; true is assumed by default.
boolean	isDynamicFunction()	Returns whether it is unsafe to cache query plans referencing this operator; false is assumed by default.

Methods inherited from class org.apache.calcite.sql.SqlFunction

deriveType, getFunctionType, getNameAsId, getParamNames, getParamTypes, getSqlIdentifier, getSyntax, isQuantifierAllowed, unparse, validateCall, validateQuantifier

Methods inherited from class org.apache.calcite.sql.SqlOperator

acceptCall, acceptCall, adjustType, allowsFraming, argumentMustBeScalar, checkOperandCount, checkOperandTypes, constructArgNameList, constructArgTypeList, constructOperandList, createCall, createCall, createCall, createCall, createCall, createCall, createCall, deriveOperandType, equals, getAllowedSignatures, getAllowedSignatures, getKind, getLeftPrec, getMonotonicity, getMonotonicity, getName, getOperandCountRange, getOperandTypeChecker, getOperandTypeInference, getReturnTypeInference, getRightPrec, getSignatureTemplate, getStrongPolicyInference, hashCode, inferReturnType, inferReturnType, isAggregator, isGroup, isGroupAuxiliary, isName, isSymmetrical, leftPrec, not, preValidateCall, requiresDecimalExpansion, requiresOrder, requiresOver, reverse, rewriteCall, rightPrec, toString, unparseListClause, unparseListClause, validateOperands, validRexOperands

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Details

SqlRandIntegerFunction

public SqlRandIntegerFunction()

Method Details

isDeterministic

public boolean isDeterministic()

Description copied from class: SqlOperator

Returns whether a call to this operator is guaranteed to always return the same result given the same operands; true is assumed by default.

Overrides:

isDeterministic in class SqlOperator

isDynamicFunction

public boolean isDynamicFunction()

Description copied from class: SqlOperator

Returns whether it is unsafe to cache query plans referencing this operator; false is assumed by default.

Overrides:

isDynamicFunction in class SqlOperator