Github user viirya commented on a diff in the pull request: https://github.com/apache/spark/pull/15146#discussion_r79340534 --- Diff: sql/catalyst/src/main/antlr4/org/apache/spark/sql/catalyst/parser/SqlBase.g4 --- @@ -262,7 +262,7 @@ ctes ; namedQuery - : name=identifier AS? '(' queryNoWith ')' + : name=identifier AS? '(' query ')' --- End diff -- Currently we only allow a query without `With` used in the CTE's named query. This change loose this limit to allow a query with `With` to be a named query. So we can define CTE in CTE subquery.
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