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MDEV-27086 "No database selected" when using UNION of CTEs to define …
…table This bug concerned only CREATE TABLE statements of the form CREATE TABLE <table name> AS <with clause> <union>. For such a statement not all references to CTE used in <union> were resolved. As a result a bogus message was reported for the first unresolved reference. This happened because for such statements the function resolving references to CTEs LEX::check_cte_dependencies_and_resolve_references() was called prematurely in the parser. Approved by Oleksandr Byelkin <sanja@mariadb.com>
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