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START TRANSACTION(7)             SQL Commands             START TRANSACTION(7)

NAME
       START TRANSACTION - start a transaction block

SYNOPSIS
       START TRANSACTION [ transaction_mode [, ...] ]

       where transaction_mode is one of:

           ISOLATION LEVEL { SERIALIZABLE | REPEATABLE READ | READ COMMITTED | READ UNCOMMITTED }
           READ WRITE | READ ONLY

DESCRIPTION
       This command begins a new transaction block. If the isolation level or
       read/write mode is specified, the new transaction has those
       characteristics, as if SET TRANSACTION [set_transaction(7)] was
       executed. This is the same as the BEGIN [begin(7)] command.

PARAMETERS
       Refer to SET TRANSACTION [set_transaction(7)] for information on the
       meaning of the parameters to this statement.

COMPATIBILITY
       In the standard, it is not necessary to issue START TRANSACTION to
       start a transaction block: any SQL command implicitly begins a block.
       PostgreSQL's behavior can be seen as implicitly issuing a COMMIT after
       each command that does not follow START TRANSACTION (or BEGIN), and it
       is therefore often called ``autocommit''.  Other relational database
       systems might offer an autocommit feature as a convenience.

       The SQL standard requires commas between successive transaction_modes,
       but for historical reasons PostgreSQL allows the commas to be omitted.

       See also the compatibility section of SET TRANSACTION
       [set_transaction(7)].

SEE ALSO
       BEGIN [begin(7)], COMMIT [commit(7)], ROLLBACK [rollback(7)], SAVEPOINT
       [savepoint(7)], SET TRANSACTION [set_transaction(7)]

SQL - Language Statements         2014-07-21              START TRANSACTION(7)