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Each statement within SurrealDB is run within its own transaction. If a set of changes need to be made together, then groups of statements can be run together as a single transaction, either succeeding as a whole, or failing without leaving any residual data modifications.
BEGIN TRANSACTION statement can be used to run a group of statements together, either succeeding as a whole, or failing. If all of the statements within a transaction succeed, and the transaction is successful, then all of the data modifications made during the transaction are committed and become a permanent part of the database. If a transaction encounters errors and must be cancelled or rolled back, then any data modification made within the transaction is rolledback, and will not be visible within the database.
BEGIN [ TRANSACTION ];
The following query shows example usage of this statement.
BEGIN TRANSACTION; -- Setup accounts CREATE account:one SET balance = 135,605.16; CREATE account:two SET balance = 91,031.31; -- Move money UPDATE account:one SET balance += 300.00; UPDATE account:two SET balance -= 300.00; -- Finalise COMMIT TRANSACTION;