f94e343f31
WITH needs to come before clauses that are part of a UNION or UNION ALL.[1][2][3][4] [1] "A CTE must be followed by a single SELECT, INSERT, UPDATE, or DELETE statement that references some or all the CTE columns." https://docs.microsoft.com/en-us/sql/t-sql/queries/with-common-table-expression-transact-sql [2] "the WITH clause itself is attached to a primary statement that can also be a SELECT, INSERT, UPDATE, or DELETE" https://www.postgresql.org/docs/9.6/static/queries-with.html [3] https://mariadb.com/kb/en/mariadb/with/ [4] "All common table expressions (ordinary and recursive) are created by prepending a WITH clause in front of a SELECT, INSERT, DELETE, or UPDATE statement." https://sqlite.org/lang_with.html Added a test case demonstrating the expected behavior for each of UNION and UNION ALL. |
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