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BEGIN ... END
Compound Statement
[begin_label:] BEGIN statement(s) END [end_label] |
Stored routines may contain multiple statements, using a
BEGIN ... END
compound statement.
begin_label
and end_label
must be the same, if both are
specified.
Please note that the optional [NOT] ATOMIC
clause is not yet
supported. This means that no transactional savepoint is set at the start of
the instruction block and the BEGIN
clause used in this context has
no effect on the current transaction.
Multiple statements requires that a client is able to send query strings
containing `;'. This is handled in the mysql command-line client
with the delimiter
command. Changing the `;' end-of-query delimiter
(for example, to `|') allows `;' to be used in a routine body.