caicancai commented on code in PR #3655:
URL: https://github.com/apache/calcite/pull/3655#discussion_r1468889540
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core/src/main/java/org/apache/calcite/sql/fun/SqlLibraryOperators.java:
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@@ -1468,6 +1468,13 @@ private static RelDataType
deriveTypeMapConcat(SqlOperatorBinding opBinding) {
ReturnTypes.TO_MAP_VALUES_NULLABLE,
OperandTypes.MAP);
+ /** The "MAP_CONTAINS_KEY(map, key)" function. */
+ @LibraryOperator(libraries = {SPARK})
+ public static final SqlFunction MAP_CONTAINS_KEYS =
+ SqlBasicFunction.create(SqlKind.MAP_CONTAINS_KEY,
+ ReturnTypes.BOOLEAN_NULLABLE,
+ OperandTypes.MAP_ELEEMNT);
Review Comment:
I don’t think this is wrong. I drew on the implementation of array_contains.
The key type of op0 of map_contains_keys and op1 are used for type checking.
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