Support MySQL SELECT INTO user variables and share INTO rendering - #2583
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manticore-projects merged 2 commits intoSep 11, 2026
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With
Dialect.MYSQLorDialect.MARIADB,SELECT COUNT(*) INTO @countTotal FROM employeenow parses with a structured list of UserVariable targets. Variable INTO clauses preserve their position before FROM or at the end of the query, including multiple targets and quoted variable names.Extend MySqlSelectIntoClause and share its rendering between toString and SelectDeParser, including custom expression visitors. SelectVisitorAdapter traverses the targets; table discovery excludes them, and statement feature analysis identifies a session assignment without a result set or schema change. Duplicate INTO clauses and system-variable targets are rejected.
Validation: original reproducer, dialect isolation, both clause positions, AST round-trips and mutation, visitor customization, statement boundaries and malformed inputs; full Gradle check and Maven verify.
Fixes #854.