public class SqlNullIfOperatorRewriter extends java.lang.Object implements SqlOperatorRewriter
Turns NULLIF(expression, expression_to_match)
into: CASE
WHEN expression == expression_to_match THEN NULL
ELSE expression
END
Constructor and Description |
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SqlNullIfOperatorRewriter() |
Modifier and Type | Method and Description |
---|---|
org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rex.RexNode |
apply(org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rex.RexBuilder rexBuilder,
java.util.List<org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rex.RexNode> operands)
Create and return a new
RexNode that represents a call to this operator with the
specified operands. |
public org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rex.RexNode apply(org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rex.RexBuilder rexBuilder, java.util.List<org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rex.RexNode> operands)
SqlOperatorRewriter
RexNode
that represents a call to this operator with the
specified operands.apply
in interface SqlOperatorRewriter
rexBuilder
- A RexBuilder
instance to use for creating new RexNode
soperands
- The original list of RexNode
operands passed to this operator call