xuzifu666 commented on code in PR #4176:
URL: https://github.com/apache/calcite/pull/4176#discussion_r1942136866
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core/src/main/java/org/apache/calcite/sql/fun/SqlLibraryOperators.java:
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@@ -1855,6 +1855,19 @@ private static RelDataType
deriveTypeMapFromEntries(SqlOperatorBinding opBinding
OperandTypes.STRING.or(OperandTypes.BINARY),
SqlFunctionCategory.STRING);
+ @LibraryOperator(libraries = {HIVE})
+ public static final SqlFunction BASE64 =
+ SqlBasicFunction.create("BASE64",
+ ReturnTypes.VARCHAR_NULLABLE,
Review Comment:
According to @ILuffZhe suggestions: BASE64 reuse TO_BASE64 function and
UN_BASE64 reuse FROM_BASE64, so ReturnTypes keep the same with TO_BASE64 and
UN_BASE64 , they are VARCHAR_NULLABLE and VARBINARY_FORCE_NULLABLE which had
the same behavior in Hive. @caicancai
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