Package org.apache.calcite.sql.validate

Class SqlAbstractConformance

java.lang.Object

org.apache.calcite.sql.validate.SqlAbstractConformance

All Implemented Interfaces:

SqlConformance

public abstract class SqlAbstractConformance
extends Object
implements SqlConformance

Abstract base class for implementing SqlConformance.

Every method in SqlConformance is implemented, and behaves the same as in SqlConformanceEnum.DEFAULT.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.calcite.sql.validate.SqlConformance

SqlConformance.SelectAliasLookup

Field Summary

Fields inherited from interface org.apache.calcite.sql.validate.SqlConformance

DEFAULT, ORACLE_10, PRAGMATIC_2003, PRAGMATIC_99, STRICT_2003, STRICT_92, STRICT_99

Constructor Summary

Constructors

Constructor	Description
SqlAbstractConformance()

Method Summary

Modifier and Type	Method	Description
boolean	allowAliasUnnestItems()	Whether directly alias array items in UNNEST.
boolean	allowCharLiteralAlias()	Whether this dialect allows character literals as column aliases.
boolean	allowExplicitRowValueConstructor()	Whether to allow SQL syntax "ROW(expr1, expr2, expr3)".
boolean	allowExtend()	Whether to allow mixing table columns with extended columns in INSERT (or UPSERT).
boolean	allowExtendedTrim()	Whether TRIM should support more than one trim character.
boolean	allowGeometry()	Whether to allow geo-spatial extensions, including the GEOMETRY type.
boolean	allowHyphenInUnquotedTableName()	Whether to allow hyphens in an unquoted table name.
boolean	allowLenientCoercion()	Whether to allow lenient type coercions.
boolean	allowNiladicConstantWithoutParentheses()	Whether to allow parentheses to be specified in calls to niladic functions of returned the specific constant value.
boolean	allowNiladicParentheses()	Whether to allow parentheses to be specified in calls to niladic functions and procedures (that is, functions and procedures with no parameters).
boolean	allowPluralTimeUnits()	Whether interval literals should allow plural time units such as "YEARS" and "DAYS" in interval literals.
boolean	allowQualifyingCommonColumn()	Whether to allow a qualified common column in a query that has a NATURAL join or a join with a USING clause.
boolean	checkedArithmetic()	Whether the implementation uses checked arithmetic.
boolean	isApplyAllowed()	Whether CROSS APPLY and OUTER APPLY operators are allowed in the parser.
boolean	isBangEqualAllowed()	Whether the bang-equal token != is allowed as an alternative to <> in the parser.
boolean	isFromRequired()	Whether FROM clause is required in a SELECT statement.
boolean	isGroupByAlias()	Whether to allow aliases from the SELECT clause to be used as column names in the GROUP BY clause.
boolean	isGroupByOrdinal()	Whether GROUP BY 2 is interpreted to mean 'group by the 2nd column in the select list'.
boolean	isHavingAlias()	Whether to allow aliases from the SELECT clause to be used as column names in the HAVING clause.
boolean	isInsertSubsetColumnsAllowed()	Whether to allow INSERT (or UPSERT) with no column list but fewer values than the target table.
boolean	isLiberal()	Whether this dialect supports features from a wide variety of dialects.
boolean	isLimitStartCountAllowed()	Whether to allow the SQL syntax "LIMIT start, count".
boolean	isMinusAllowed()	Whether MINUS is allowed as an alternative to EXCEPT in the parser.
boolean	isOffsetLimitAllowed()	Whether to allow the SQL syntax "OFFSET start LIMIT count" (that is, OFFSET before LIMIT, in addition to LIMIT before OFFSET and OFFSET before FETCH).
boolean	isPercentRemainderAllowed()	Whether the "%" operator is allowed by the parser as an alternative to the mod function.
SqlConformance.SelectAliasLookup	isSelectAlias()	Whether to allow aliases from the SELECT clause to be used as column names in the same SELECT clause.
boolean	isSortByAlias()	Whether 'ORDER BY x' is interpreted to mean 'sort by the select list item whose alias is x' even if there is a column called x.
boolean	isSortByAliasObscures()	Whether "empno" is invalid in "select empno as x from emp order by empno" because the alias "x" obscures it.
boolean	isSortByOrdinal()	Whether 'ORDER BY 2' is interpreted to mean 'sort by the 2nd column in the select list'.
boolean	isSupportedDualTable()	Whether this dialect supports dual table.
boolean	isValueAllowed()	Whether VALUE is allowed as an alternative to VALUES in the parser.
SqlLibrary	semantics()	Controls the behavior of operators that are part of Standard SQL but nevertheless have different behavior in different databases.
boolean	shouldConvertRaggedUnionTypesToVarying()	Whether the least restrictive type of a number of CHAR types of different lengths should be a VARCHAR type.
boolean	splitQuotedTableName()	Whether to split a quoted table name.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

SqlAbstractConformance

public SqlAbstractConformance()

Method Details

isLiberal

public boolean isLiberal()

Description copied from interface: SqlConformance

Whether this dialect supports features from a wide variety of dialects. This is enabled for the Babel parser, disabled otherwise.

Specified by:

isLiberal in interface SqlConformance

allowCharLiteralAlias

public boolean allowCharLiteralAlias()

Description copied from interface: SqlConformance

Whether this dialect allows character literals as column aliases.

For example,

   SELECT empno, sal + comm AS 'remuneration'
   FROM Emp

Among the built-in conformance levels, true in SqlConformanceEnum.BABEL, SqlConformanceEnum.BIG_QUERY, SqlConformanceEnum.LENIENT, SqlConformanceEnum.MYSQL_5, SqlConformanceEnum.SQL_SERVER_2008; false otherwise.

Specified by:

allowCharLiteralAlias in interface SqlConformance

isSupportedDualTable

public boolean isSupportedDualTable()

Description copied from interface: SqlConformance

Whether this dialect supports dual table.

For example,

SELECT 1 + 1 FROM DUAL

Among the built-in conformance levels, true in SqlConformanceEnum.MYSQL_5, SqlConformanceEnum.ORACLE_10, SqlConformanceEnum.ORACLE_12, false otherwise.

Specified by:

isSupportedDualTable in interface SqlConformance

isGroupByAlias

public boolean isGroupByAlias()

Description copied from interface: SqlConformance

Whether to allow aliases from the SELECT clause to be used as column names in the GROUP BY clause.

Among the built-in conformance levels, true in SqlConformanceEnum.BABEL, SqlConformanceEnum.BIG_QUERY, SqlConformanceEnum.LENIENT, SqlConformanceEnum.MYSQL_5; false otherwise.

Specified by:

isGroupByAlias in interface SqlConformance

isSelectAlias

public SqlConformance.SelectAliasLookup isSelectAlias()

Description copied from interface: SqlConformance

Whether to allow aliases from the SELECT clause to be used as column names in the same SELECT clause. E.g., SELECT 1 as X, X+1 as Y; Name lookup considers an identifier in the same SELECT only if other lookups failed. Supported by Spark, Snowflake, Redshift, DuckDB.

Note: this usually requires SqlConformance.isGroupByAlias() to also return true.

Specified by:

isSelectAlias in interface SqlConformance

isGroupByOrdinal

public boolean isGroupByOrdinal()

Description copied from interface: SqlConformance

Whether GROUP BY 2 is interpreted to mean 'group by the 2nd column in the select list'.

Among the built-in conformance levels, true in SqlConformanceEnum.BABEL, SqlConformanceEnum.BIG_QUERY, SqlConformanceEnum.LENIENT, SqlConformanceEnum.MYSQL_5, SqlConformanceEnum.PRESTO; false otherwise.

Specified by:

isGroupByOrdinal in interface SqlConformance

isHavingAlias

public boolean isHavingAlias()

Description copied from interface: SqlConformance

Whether to allow aliases from the SELECT clause to be used as column names in the HAVING clause.

Among the built-in conformance levels, true in SqlConformanceEnum.BABEL, SqlConformanceEnum.BIG_QUERY, SqlConformanceEnum.LENIENT, SqlConformanceEnum.MYSQL_5; false otherwise.

Specified by:

isHavingAlias in interface SqlConformance

isSortByOrdinal

public boolean isSortByOrdinal()

Description copied from interface: SqlConformance

Whether 'ORDER BY 2' is interpreted to mean 'sort by the 2nd column in the select list'.

Among the built-in conformance levels, true in SqlConformanceEnum.DEFAULT, SqlConformanceEnum.BABEL, SqlConformanceEnum.LENIENT, SqlConformanceEnum.MYSQL_5, SqlConformanceEnum.ORACLE_10, SqlConformanceEnum.ORACLE_12, SqlConformanceEnum.PRAGMATIC_99, SqlConformanceEnum.PRAGMATIC_2003, SqlConformanceEnum.PRESTO, SqlConformanceEnum.SQL_SERVER_2008, SqlConformanceEnum.STRICT_92; false otherwise.

Specified by:

isSortByOrdinal in interface SqlConformance

isSortByAlias

public boolean isSortByAlias()

Description copied from interface: SqlConformance

Whether 'ORDER BY x' is interpreted to mean 'sort by the select list item whose alias is x' even if there is a column called x.

Among the built-in conformance levels, true in SqlConformanceEnum.DEFAULT, SqlConformanceEnum.BABEL, SqlConformanceEnum.BIG_QUERY, SqlConformanceEnum.LENIENT, SqlConformanceEnum.MYSQL_5, SqlConformanceEnum.ORACLE_10, SqlConformanceEnum.ORACLE_12, SqlConformanceEnum.SQL_SERVER_2008, SqlConformanceEnum.STRICT_92; false otherwise.

Specified by:

isSortByAlias in interface SqlConformance

isSortByAliasObscures

public boolean isSortByAliasObscures()

Description copied from interface: SqlConformance

Whether "empno" is invalid in "select empno as x from emp order by empno" because the alias "x" obscures it.

Among the built-in conformance levels, true in SqlConformanceEnum.STRICT_92; false otherwise.

Specified by:

isSortByAliasObscures in interface SqlConformance

isFromRequired

public boolean isFromRequired()

Description copied from interface: SqlConformance

Whether FROM clause is required in a SELECT statement.

Among the built-in conformance levels, true in SqlConformanceEnum.ORACLE_10, SqlConformanceEnum.ORACLE_12, SqlConformanceEnum.STRICT_92, SqlConformanceEnum.STRICT_99, SqlConformanceEnum.STRICT_2003; false otherwise.

Specified by:

isFromRequired in interface SqlConformance

splitQuotedTableName

public boolean splitQuotedTableName()

Description copied from interface: SqlConformance

Whether to split a quoted table name. If true, `x.y.z` is parsed as if the user had written `x`.`y`.`z`.

Among the built-in conformance levels, true in SqlConformanceEnum.BIG_QUERY; false otherwise.

Specified by:

splitQuotedTableName in interface SqlConformance

allowHyphenInUnquotedTableName

public boolean allowHyphenInUnquotedTableName()

Description copied from interface: SqlConformance

Whether to allow hyphens in an unquoted table name.

If true, SELECT * FROM foo-bar.baz-buzz is valid, and is parsed as if the user had written SELECT * FROM `foo-bar`.`baz-buzz`.

Among the built-in conformance levels, true in SqlConformanceEnum.BIG_QUERY; false otherwise.

Specified by:

allowHyphenInUnquotedTableName in interface SqlConformance

isBangEqualAllowed

public boolean isBangEqualAllowed()

Description copied from interface: SqlConformance

Whether the bang-equal token != is allowed as an alternative to <> in the parser.

Among the built-in conformance levels, true in SqlConformanceEnum.BABEL, SqlConformanceEnum.LENIENT, SqlConformanceEnum.MYSQL_5, SqlConformanceEnum.ORACLE_10, SqlConformanceEnum.ORACLE_12, SqlConformanceEnum.PRESTO; false otherwise.

Specified by:

isBangEqualAllowed in interface SqlConformance

isMinusAllowed

public boolean isMinusAllowed()

Description copied from interface: SqlConformance

Whether MINUS is allowed as an alternative to EXCEPT in the parser.

Among the built-in conformance levels, true in SqlConformanceEnum.BABEL, SqlConformanceEnum.LENIENT, SqlConformanceEnum.ORACLE_10, SqlConformanceEnum.ORACLE_12; false otherwise.

Note: MySQL does not support MINUS or EXCEPT (as of version 5.5).

Specified by:

isMinusAllowed in interface SqlConformance

isApplyAllowed

public boolean isApplyAllowed()

Description copied from interface: SqlConformance

Whether CROSS APPLY and OUTER APPLY operators are allowed in the parser.

APPLY invokes a table-valued function for each row returned by a table expression. It is syntactic sugar:

• SELECT * FROM emp CROSS APPLY TABLE(promote(empno)
  is equivalent to
  SELECT * FROM emp CROSS JOIN LATERAL TABLE(promote(empno)
• SELECT * FROM emp OUTER APPLY TABLE(promote(empno)
  is equivalent to
  SELECT * FROM emp LEFT JOIN LATERAL TABLE(promote(empno) ON true

Among the built-in conformance levels, true in SqlConformanceEnum.BABEL, SqlConformanceEnum.LENIENT, SqlConformanceEnum.ORACLE_12, SqlConformanceEnum.SQL_SERVER_2008; false otherwise.

Specified by:

isApplyAllowed in interface SqlConformance

isInsertSubsetColumnsAllowed

public boolean isInsertSubsetColumnsAllowed()

Description copied from interface: SqlConformance

Whether to allow INSERT (or UPSERT) with no column list but fewer values than the target table.

The N values provided are assumed to match the first N columns of the table, and for each of the remaining columns, the default value of the column is used. It is an error if any of these columns has no default value.

The default value of a column is specified by the DEFAULT clause in the CREATE TABLE statement, or is NULL if the column is not declared NOT NULL.

Among the built-in conformance levels, true in SqlConformanceEnum.BABEL, SqlConformanceEnum.LENIENT, SqlConformanceEnum.PRAGMATIC_99, SqlConformanceEnum.PRAGMATIC_2003; false otherwise.

Specified by:

isInsertSubsetColumnsAllowed in interface SqlConformance

allowNiladicParentheses

public boolean allowNiladicParentheses()

Description copied from interface: SqlConformance

Whether to allow parentheses to be specified in calls to niladic functions and procedures (that is, functions and procedures with no parameters).

For example, CURRENT_DATE is a niladic system function. In standard SQL it must be invoked without parentheses:

VALUES CURRENT_DATE

If allowNiladicParentheses, the following syntax is also valid:

VALUES CURRENT_DATE()

Of the popular databases, MySQL, Apache Phoenix and VoltDB allow this behavior; Apache Hive, HSQLDB, IBM DB2, Microsoft SQL Server, Oracle, PostgreSQL do not.

Among the built-in conformance levels, true in SqlConformanceEnum.BABEL, SqlConformanceEnum.LENIENT, SqlConformanceEnum.MYSQL_5; false otherwise.

Specified by:

allowNiladicParentheses in interface SqlConformance

allowNiladicConstantWithoutParentheses

public boolean allowNiladicConstantWithoutParentheses()

Description copied from interface: SqlConformance

Whether to allow parentheses to be specified in calls to niladic functions of returned the specific constant value.

For example, PI is a niladic function and return specific constant values pi. In standard SQL it must be invoked with parentheses:

VALUES PI()

If allowNiladicConstantWithoutParentheses, the following syntax is also valid:

VALUES PI

The same function include E which result is Euler's constant.

Among the built-in conformance levels, true in SqlConformanceEnum.ORACLE_10, SqlConformanceEnum.ORACLE_12, SqlConformanceEnum.DEFAULT; SqlConformanceEnum.LENIENT; false otherwise.

Specified by:

allowNiladicConstantWithoutParentheses in interface SqlConformance

allowExplicitRowValueConstructor

public boolean allowExplicitRowValueConstructor()

Description copied from interface: SqlConformance

Whether to allow SQL syntax "ROW(expr1, expr2, expr3)".

The equivalent syntax in standard SQL is "(expr1, expr2, expr3)".

Standard SQL does not allow this because the type is not well-defined. However, PostgreSQL allows this behavior.

Standard SQL allows row expressions in other contexts, for instance inside VALUES clause.

Among the built-in conformance levels, true in SqlConformanceEnum.DEFAULT, SqlConformanceEnum.LENIENT, SqlConformanceEnum.PRESTO; false otherwise.

Specified by:

allowExplicitRowValueConstructor in interface SqlConformance

allowExtend

public boolean allowExtend()

Description copied from interface: SqlConformance

Whether to allow mixing table columns with extended columns in INSERT (or UPSERT).

For example, suppose that the declaration of table T has columns A and B, and you want to insert data of column C INTEGER not present in the table declaration as an extended column. You can specify the columns in an INSERT statement as follows:

INSERT INTO T (A, B, C INTEGER) VALUES (1, 2, 3)

Among the built-in conformance levels, true in SqlConformanceEnum.BABEL, SqlConformanceEnum.LENIENT; false otherwise.

Specified by:

allowExtend in interface SqlConformance

isLimitStartCountAllowed

public boolean isLimitStartCountAllowed()

Description copied from interface: SqlConformance

Whether to allow the SQL syntax "LIMIT start, count".

The equivalent syntax in standard SQL is "OFFSET start ROW FETCH FIRST count ROWS ONLY", and in PostgreSQL "LIMIT count OFFSET start".

MySQL and CUBRID allow this behavior.

Among the built-in conformance levels, true in SqlConformanceEnum.BABEL, SqlConformanceEnum.LENIENT, SqlConformanceEnum.MYSQL_5; false otherwise.

Specified by:

isLimitStartCountAllowed in interface SqlConformance

isOffsetLimitAllowed

public boolean isOffsetLimitAllowed()

Description copied from interface: SqlConformance

Whether to allow the SQL syntax "OFFSET start LIMIT count" (that is, OFFSET before LIMIT, in addition to LIMIT before OFFSET and OFFSET before FETCH).

The equivalent syntax in standard SQL is "OFFSET start ROW FETCH FIRST count ROWS ONLY".

Trino allows this behavior.

Among the built-in conformance levels, true in SqlConformanceEnum.BABEL, SqlConformanceEnum.LENIENT; false otherwise.

Specified by:

isOffsetLimitAllowed in interface SqlConformance

isPercentRemainderAllowed

public boolean isPercentRemainderAllowed()

Description copied from interface: SqlConformance

Whether the "%" operator is allowed by the parser as an alternative to the mod function.

Among the built-in conformance levels, true in SqlConformanceEnum.BABEL, SqlConformanceEnum.LENIENT, SqlConformanceEnum.MYSQL_5, SqlConformanceEnum.PRESTO; false otherwise.

Specified by:

isPercentRemainderAllowed in interface SqlConformance

allowGeometry

public boolean allowGeometry()

Description copied from interface: SqlConformance

Whether to allow geo-spatial extensions, including the GEOMETRY type.

Among the built-in conformance levels, true in SqlConformanceEnum.BABEL, SqlConformanceEnum.LENIENT, SqlConformanceEnum.MYSQL_5, SqlConformanceEnum.PRESTO, SqlConformanceEnum.SQL_SERVER_2008; false otherwise.

Specified by:

allowGeometry in interface SqlConformance

shouldConvertRaggedUnionTypesToVarying

public boolean shouldConvertRaggedUnionTypesToVarying()

Description copied from interface: SqlConformance

Whether the least restrictive type of a number of CHAR types of different lengths should be a VARCHAR type. And similarly BINARY to VARBINARY.

For example, consider the query

SELECT 'abcde' UNION SELECT 'xyz'

The input columns have types CHAR(5) and CHAR(3), and we need a result type that is large enough for both:

• Under strict SQL:2003 behavior, its column has type CHAR(5), and the value in the second row will have trailing spaces.
• With lenient behavior, its column has type VARCHAR(5), and the values have no trailing spaces.

Among the built-in conformance levels, true in SqlConformanceEnum.PRAGMATIC_99, SqlConformanceEnum.PRAGMATIC_2003, SqlConformanceEnum.MYSQL_5, SqlConformanceEnum.ORACLE_10, SqlConformanceEnum.ORACLE_12, SqlConformanceEnum.PRESTO, SqlConformanceEnum.SQL_SERVER_2008; false otherwise.

Specified by:

shouldConvertRaggedUnionTypesToVarying in interface SqlConformance

allowExtendedTrim

public boolean allowExtendedTrim()

Description copied from interface: SqlConformance

Whether TRIM should support more than one trim character.

For example, consider the query

SELECT TRIM('eh' FROM 'hehe__hehe')

Under strict behavior, if the length of trim character is not 1, TRIM throws an exception, and the query fails. However many implementations (in databases such as MySQL and SQL Server) trim all the characters, resulting in a return value of '__'.

Among the built-in conformance levels, true in SqlConformanceEnum.BABEL, SqlConformanceEnum.LENIENT, SqlConformanceEnum.MYSQL_5, SqlConformanceEnum.SQL_SERVER_2008; false otherwise.

Specified by:

allowExtendedTrim in interface SqlConformance

allowPluralTimeUnits

public boolean allowPluralTimeUnits()

Description copied from interface: SqlConformance

Whether interval literals should allow plural time units such as "YEARS" and "DAYS" in interval literals.

Under strict behavior, INTERVAL '2' DAY is valid and INTERVAL '2' DAYS is invalid; PostgreSQL allows both; Oracle only allows singular time units.

Among the built-in conformance levels, true in SqlConformanceEnum.BABEL, SqlConformanceEnum.LENIENT; false otherwise.

Specified by:

allowPluralTimeUnits in interface SqlConformance

allowQualifyingCommonColumn

public boolean allowQualifyingCommonColumn()

Description copied from interface: SqlConformance

Whether to allow a qualified common column in a query that has a NATURAL join or a join with a USING clause.

For example, in the query

SELECT emp.deptno
 FROM emp
 JOIN dept USING (deptno)

deptno is the common column. A qualified common column such as emp.deptno is not allowed in Oracle, but is allowed in PostgreSQL.

Among the built-in conformance levels, false in SqlConformanceEnum.ORACLE_10, SqlConformanceEnum.ORACLE_12, SqlConformanceEnum.PRESTO, SqlConformanceEnum.STRICT_92, SqlConformanceEnum.STRICT_99, SqlConformanceEnum.STRICT_2003; true otherwise.

Specified by:

allowQualifyingCommonColumn in interface SqlConformance

allowAliasUnnestItems

public boolean allowAliasUnnestItems()

Description copied from interface: SqlConformance

Whether directly alias array items in UNNEST.

E.g. in UNNEST(a_array, b_array) AS T(a, b), a and b will be aliases of elements in a_array and b_array respectively.

Without this flag set, T will be the alias of the element in a_array and a, b will be the top level fields of T if T is a STRUCT type.

Among the built-in conformance levels, true in SqlConformanceEnum.PRESTO; false otherwise.

Specified by:

allowAliasUnnestItems in interface SqlConformance

isValueAllowed

public boolean isValueAllowed()

Description copied from interface: SqlConformance

Whether VALUE is allowed as an alternative to VALUES in the parser.

Among the built-in conformance levels, true in SqlConformanceEnum.BABEL, SqlConformanceEnum.LENIENT, SqlConformanceEnum.MYSQL_5; false otherwise.

Specified by:

isValueAllowed in interface SqlConformance

semantics

public SqlLibrary semantics()

Description copied from interface: SqlConformance

Controls the behavior of operators that are part of Standard SQL but nevertheless have different behavior in different databases.

Consider the SUBSTRING operator. In ISO standard SQL, negative start indexes are converted to 1; in Google BigQuery, negative start indexes are treated as offsets from the end of the string. For example, SUBSTRING('abcde' FROM -3 FOR 2) returns 'ab' in standard SQL and 'cd' in BigQuery.

If you specify conformance=BIG_QUERY in your connection parameters, SUBSTRING will give the BigQuery behavior. Similarly MySQL and Oracle.

Among the built-in conformance levels:

• SqlConformanceEnum.BIG_QUERY returns SqlLibrary.BIG_QUERY;
• SqlConformanceEnum.MYSQL_5 returns SqlLibrary.MYSQL;
• SqlConformanceEnum.ORACLE_10 and SqlConformanceEnum.ORACLE_12 return SqlLibrary.ORACLE;
• otherwise returns SqlLibrary.STANDARD.

Specified by:

semantics in interface SqlConformance

allowLenientCoercion

public boolean allowLenientCoercion()

Description copied from interface: SqlConformance

Whether to allow lenient type coercions.

Coercions include:

• Coercion of string literal to array literal. For example, SELECT ARRAY[0,1,2] == '{0,1,2}'
• Casting BOOLEAN values to one of the following numeric types: TINYINT, SMALLINT, INTEGER, BIGINT.

Among the built-in conformance levels, true in SqlConformanceEnum.BABEL, false otherwise.

Specified by:

allowLenientCoercion in interface SqlConformance

checkedArithmetic

public boolean checkedArithmetic()

Description copied from interface: SqlConformance

Whether the implementation uses checked arithmetic. Most SQL dialects use checked arithmetic at runtime: they terminate with a fatal error on overflow.

Specified by:

checkedArithmetic in interface SqlConformance