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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