Summary

_runTxCommand replaces session.controller.text with START TRANSACTION; / COMMIT; / ROLLBACK; then _executes. The user’s SQL is wiped. There is no _txOpen badge (Postgres has one). Combined with the shared read-write socket, Table Browser Save then hits nested START TRANSACTION.

Scope

• Run tx control as its own execute without clobbering the editor buffer.
• Track open transaction (e.g. SELECT @@in_transaction on 8.0 / MariaDB equivalent) and show it in the toolbar.
• Disable Table Browser Save (or use a separate connection) while the SQL tab has an open tx.

Out of scope

• Implicit autocommit-off wrapping (Postgres fix(postgres): run Table Browser / SQL DML as separate statements, not one extended-protocol script #784 / fix(postgres): inOpenTransaction must detect BEGIN without an assigned XID #787).