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The following commands implicitly end a transaction (as if you had done
a COMMIT
before executing the command):
Command | Command | Command |
ALTER TABLE | BEGIN | CREATE INDEX |
DROP DATABASE | DROP INDEX | DROP TABLE |
LOAD MASTER DATA | LOCK TABLES | RENAME TABLE |
SET AUTOCOMMIT=1 | START TRANSACTION | TRUNCATE |
UNLOCK TABLES
also ends a transaction if any tables currently are
locked. Prior to MySQL 4.0.13, CREATE TABLE
ends a transaction if
the binary update log is enabled.
Transactions cannot be nested. This is a consequence of the implicit
COMMIT
performed for any current transaction when you issue a
START TRANSACTION
statement or one of its synonyms.