org.apache.calcite.sql.fun

Class SqlInternalOperators

java.lang.Object

org.apache.calcite.sql.fun.SqlInternalOperators

public abstract class SqlInternalOperators
extends Object

Contains internal operators.

These operators are always created directly, not by looking up a function or operator by name or syntax, and therefore this class does not implement interface SqlOperatorTable.

Field Summary

Fields

Modifier and Type	Field and Description
static SqlRowOperator	ANONYMOUS_ROW Similar to SqlStdOperatorTable.ROW, but does not print "ROW".
static SqlRowOperator	ANONYMOUS_ROW_NO_PARENTHESES Similar to ANONYMOUS_ROW, but does not print "ROW" or parentheses.
static SqlBetweenOperator	DRUID_BETWEEN A BETWEEN operator for Druid, analogous to DRUID_IN.
static SqlInOperator	DRUID_IN An IN operator for Druid.
static SqlInOperator	DRUID_NOT_IN A NOT IN operator for Druid, analogous to DRUID_IN.
static SqlOperator	FETCH Fetch operator is ONLY used for its precedence during unparsing.
static SqlInternalOperator	GROUP_BY_DISTINCT DISTINCT operator, occurs within GROUP BY clause.
static SqlOperator	OFFSET Offset operator is ONLY used for its precedence during unparsing.
static SqlOperator	SEPARATOR Separator expression inside GROUP_CONCAT, e.g.
static SqlInternalOperator	THROW_UNLESS "$THROW_UNLESS(condition, message)" throws an error with the given message if condition is not TRUE, otherwise returns TRUE.

Method Summary

Methods inherited from class java.lang.Object

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

Field Detail

ANONYMOUS_ROW

public static final SqlRowOperator ANONYMOUS_ROW

Similar to SqlStdOperatorTable.ROW, but does not print "ROW".

For arguments [1, TRUE], ROW would print "ROW (1, TRUE)", but this operator prints "(1, TRUE)".

ANONYMOUS_ROW_NO_PARENTHESES

public static final SqlRowOperator ANONYMOUS_ROW_NO_PARENTHESES

Similar to ANONYMOUS_ROW, but does not print "ROW" or parentheses.

For arguments [1, TRUE], prints "1, TRUE". It is used in contexts where parentheses have been printed (because we thought we were about to print "(ROW (1, TRUE))") and we wish we had not.

THROW_UNLESS

public static final SqlInternalOperator THROW_UNLESS

"$THROW_UNLESS(condition, message)" throws an error with the given message if condition is not TRUE, otherwise returns TRUE.

DRUID_IN

public static final SqlInOperator DRUID_IN

An IN operator for Druid.

Unlike the regular SqlStdOperatorTable.IN operator it may be used in RexCall. It does not require that its operands have consistent types.

DRUID_NOT_IN

public static final SqlInOperator DRUID_NOT_IN

A NOT IN operator for Druid, analogous to DRUID_IN.

DRUID_BETWEEN

public static final SqlBetweenOperator DRUID_BETWEEN

A BETWEEN operator for Druid, analogous to DRUID_IN.

SEPARATOR

public static final SqlOperator SEPARATOR

Separator expression inside GROUP_CONCAT, e.g. 'SEPARATOR ',''.

GROUP_BY_DISTINCT

public static final SqlInternalOperator GROUP_BY_DISTINCT

DISTINCT operator, occurs within GROUP BY clause.

FETCH

public static final SqlOperator FETCH

Fetch operator is ONLY used for its precedence during unparsing.

OFFSET

public static final SqlOperator OFFSET

Offset operator is ONLY used for its precedence during unparsing.