Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/21941#discussion_r206763358
--- Diff:
sql/catalyst/src/main/antlr4/org/apache/spark/sql/catalyst/parser/SqlBase.g4 ---
@@ -17,6 +17,12 @@
grammar SqlBase;
@members {
+ /**
+ * When true, INTERSECT is given precedence over UNION and EXCEPT set
operations as per
--- End diff --
> When true, INTERSECT is given precedence over UNION and EXCEPT set
operations as per
->
> When true, INTERSECT is given the greater precedence over the other set
operations (UNION, EXCEPT and MINUS) as per
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