dolthub/dolt#9519 - Fix SQL syntax error for mixed named columns and * in SELECT #3104
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Dolt was incorrectly allowing queries like `SELECT 'parent' as db, * FROM table` which MySQL rejects with a syntax error. This implements MySQL's rule that named expressions cannot appear before unqualified * in SELECT clauses. The fix: - Validates SELECT expressions in the existing processing loop - Rejects named expressions before unqualified * (matches MySQL behavior) - Allows qualified table.* in any position - Allows expressions after * (e.g., SELECT *, column) Fixes dolthub/dolt#9519 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <[email protected]>
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Fixes dolthub/dolt#9519