XuQianJin-Stars commented on code in PR #3648:
URL: https://github.com/apache/calcite/pull/3648#discussion_r1468428068
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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:
I noticed that PostgreSQL, SQL Server, and Oracle all support the processing
of the LOG2 function. You can check if this link can help improve this PR:
https://www.w3resource.com/oracle/oracle-numeric-functions/oracle-log-function.php
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