ILuffZhe commented on code in PR #3292:
URL: https://github.com/apache/calcite/pull/3292#discussion_r1270123652
##########
core/src/main/java/org/apache/calcite/sql/fun/SqlLibraryOperators.java:
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@@ -1260,6 +1260,14 @@ private static RelDataType
deriveTypeMapFromEntries(SqlOperatorBinding opBinding
ReturnTypes.IDENTITY_TO_MAP_NULLABLE,
OperandTypes.STRING_OPTIONAL_STRING_OPTIONAL_STRING);
+ /** The "SUBSTRING_INDEX(string, delimiter, count)" function. */
+ @LibraryOperator(libraries = {SPARK})
+ public static final SqlFunction SUBSTRING_INDEX =
+ SqlBasicFunction.create(SqlKind.SUBSTRING_INDEX,
+ ReturnTypes.ARG0_NULLABLE_VARYING,
Review Comment:
Thanks for your explanation.
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