lincoln-lil commented on code in PR #23478:
URL: https://github.com/apache/flink/pull/23478#discussion_r1353989534
##########
flink-table/flink-table-planner/src/main/scala/org/apache/flink/table/planner/codegen/calls/ScalarOperatorGens.scala:
##########
@@ -488,6 +488,18 @@ object ScalarOperatorGens {
else if (isNumeric(left.resultType) && isNumeric(right.resultType)) {
generateComparison(ctx, "!=", left, right, resultType)
}
+ // support date/time/timestamp not equalTo string.
+ else if (
+ (isTimePoint(left.resultType) && isCharacterString(right.resultType)) ||
Review Comment:
Can we add optimizations for string literals similar to the handling of
`generateEquals`?
##########
flink-table/flink-table-planner/src/test/scala/org/apache/flink/table/planner/expressions/ScalarOperatorsTest.scala:
##########
@@ -228,6 +228,15 @@ class ScalarOperatorsTest extends ScalarOperatorsTestBase {
testSqlApi("uuid() = cast(f22 as timestamp_ltz)", "NULL")
}
+ @Test
+ def testTimePointTypeNotEqualsStringType(): Unit = {
+ testSqlApi("f22 = '1996-11-10 12:34:56'", "TRUE")
Review Comment:
I see that the datetime family contains 5 datatypes(see
`org.apache.flink.table.types.logical.LogicalTypeRoot`), so it is recommended
to add more tests for complete coverage of the datatypes
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