sqlite: reject invalid qualified column references in correlated subqueries #4249
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- Validate qualified column references across scopes - Reject invalid qualified refs in correlated subqueries - Validate qualified refs in subqueries Signed-off-by: Amirhossein Akhlaghpour <[email protected]>
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SQLite allows some invalid correlated references to parse successfully but
fails at runtime (e.g. referencing a table alias that is not in scope).
sqlc previously accepted these queries. This PR adds a SQLite-specific
validator that walks the AST with a parent-linked scope chain and rejects
qualified column references whose table/alias is not visible.
A new end-to-end regression test reproduces the issue and verifies the fix.
Fixes: #4223