caicancai commented on code in PR #4176:
URL: https://github.com/apache/calcite/pull/4176#discussion_r1938388046
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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:
Why is one return value VARCHAR_NULLABLE and the other
VARCHAR_FORCE_NULLABLE? Is there any difference between base64 and unbase64?
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