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################################################################################
#
# UPDATE using multiple statements. Subtract a value (4) from one field, then
# add the same value to another field in the same row.
#
# Mind any tx errors, ROLLBACK if needed to "equalize" different engines.
#
################################################################################
SET autocommit = 0;
START TRANSACTION;
eval SET @conn_id = CONNECTION_ID(), @thread_id = 0;
--error 0, ER_LOCK_DEADLOCK, ER_LOCK_WAIT_TIMEOUT, ER_CHECKREAD
UPDATE t1 SET `int1` = `int1` - 4,
`id` = 4,
`is_consistent` = 0,
`connection_id` = @conn_id,
`thread_id` = @thread_id
WHERE `pk` = 4;
--source suite/engines/rr_trx/include/check_for_error_rollback.inc
--echo *** UPDATEing row with pk = 4 and `int1_key` +=4 if above statement succeeded (query log disabled)...
if (!$error)
{
# This is conditional, so disable query log to avoid irrelevant diffs.
--disable_query_log
--error 0, ER_LOCK_DEADLOCK, ER_LOCK_WAIT_TIMEOUT, ER_CHECKREAD
UPDATE t1 SET `int1_key` = `int1_key` + 4,
`is_consistent` = 1,
`connection_id` = @conn_id,
`thread_id` = @thread_id
WHERE `pk` = 4;
--source suite/engines/rr_trx/include/check_for_error_rollback.inc
--enable_query_log
}
COMMIT;