wojustme commented on a change in pull request #2692:
URL: https://github.com/apache/calcite/pull/2692#discussion_r786442606
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File path:
core/src/main/java/org/apache/calcite/sql/fun/SqlLibraryOperators.java
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@@ -706,4 +707,17 @@ private SqlLibraryOperators() {
@LibraryOperator(libraries = { POSTGRESQL })
public static final SqlOperator INFIX_CAST =
new SqlCastOperator();
+
+ /** Null-safe "<=>" equal operator used by MySQL, for example
+ * {@code 1<=>NULL}. */
+ @LibraryOperator(libraries = { MYSQL })
+ public static final SqlOperator NULL_SAFE_EQUAL =
Review comment:
@NobiGo
When using SqlStdOperatorTable#IS_NOT_DISTINCT_FROM, '`X` <=> 3' will return
'`X` IS NOT DISTINCT FROM 3'.
I think it destroys the user's original input.
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