caicancai commented on code in PR #3648:
URL: https://github.com/apache/calcite/pull/3648#discussion_r1468431235
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core/src/main/java/org/apache/calcite/sql/fun/SqlLibraryOperators.java:
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@@ -2142,6 +2142,18 @@ private static RelDataType
deriveTypeMapFromEntries(SqlOperatorBinding opBinding
OperandTypes.NUMERIC_OPTIONAL_NUMERIC,
SqlFunctionCategory.NUMERIC);
+ /** The "LOG2(value)" function.
+ *
+ * @see SqlStdOperatorTable#LN
+ * @see SqlStdOperatorTable#LOG10
+ */
+ @LibraryOperator(libraries = {MYSQL, SPARK})
Review Comment:
https://www.postgresql.org/docs/current/functions-math.html#FUNCTIONS-MATH-FUNC-TABLE
The official document does not show it, I think there is no need to add it
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