vladimirg-db commented on code in PR #49835:
URL: https://github.com/apache/spark/pull/49835#discussion_r1946169495
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sql/api/src/main/antlr4/org/apache/spark/sql/catalyst/parser/SqlBaseParser.g4:
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@@ -476,6 +476,10 @@ commentSpec
: COMMENT stringLit
;
+singleQuery
+ : query EOF
Review Comment:
It's still confusing to me how is `SELECT 1 WHERE true` is parsed as
`Filter` on top of a `Project` and `SELECT 1 UNION SELECT 2` is parsed as a
`Project` with `UNION` as alias name.
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