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################################################################################
#
# Purpose: Execute changes to t1 and roll back to potentially mess up
# REPEATABLE READ queries in other transactions.
#
# - Start transaction
# - Do "bogus" updates
# - ROLLBACK
# - Do "bogus" inserts
# - Do bogus deletes
# - ROLLBACK
#
# Handles rows with pk between 500 and 550.
#
################################################################################
# TODO: Handle tx errors (possible deadlocks?)
SET autocommit = 0;
START TRANSACTION;
--echo *** All changes done in this test / transaction will be rolled back.
let $conn_id= `SELECT CONNECTION_ID()`;
# "Bogus" updates:
# Disabling query log to avoid complex filtering of output in order to keep
# result file diffing clean.
--echo *** Disabling query log.
--disable_query_log
--echo *** Executing UPDATE on rows 501 -- 549 with id = 50, single statement.
--error 0, ER_LOCK_DEADLOCK, ER_LOCK_WAIT_TIMEOUT, ER_CHECKREAD
eval UPDATE t1 SET `int1` = 50,
`int1_key` = `int1_key` + 50,
`int2` = `int2` - 50,
`id` = 50,
`is_consistent` = 0,
`is_uncommitted` = 1,
`connection_id` = $conn_id
WHERE `pk` > 500 AND `pk` < 550;
--echo *** Executing UPDATE on rows 526 -- 549 with id = 50, single statement.
--error 0, ER_LOCK_DEADLOCK, ER_LOCK_WAIT_TIMEOUT, ER_CHECKREAD
eval UPDATE t1 SET `int2_key` = 50,
`id` = 50,
`is_consistent` = 0,
`is_uncommitted` = 1,
`connection_id` = $conn_id
WHERE `pk` > 525 AND `pk` < 550;
# Still "bogus" updates... Now update 25 rows in succession, single field:
--echo *** Executing UPDATE on rows 501 -- 525 with id = 50, multiple statements.
let $updates= 25;
while ($updates)
{
--error 0, ER_LOCK_DEADLOCK, ER_LOCK_WAIT_TIMEOUT, ER_CHECKREAD
eval UPDATE t1 SET `int2_key` = 50,
`id` = 50,
`is_consistent` = 0,
`is_uncommitted` = 1,
`connection_id` = $conn_id
WHERE `pk` = (SELECT 526 - $updates);
dec $updates;
}
--echo *** ROLLBACK
ROLLBACK;
--echo *** START TRANSACTION
START TRANSACTION;
# Now do some "bogus" inserts:
--echo *** Executing INSERTs of rows with id = 50, 2 statements.
--error 0, ER_LOCK_DEADLOCK, ER_LOCK_WAIT_TIMEOUT, ER_DUP_ENTRY
eval INSERT INTO t1 (`id`, `int1`, `int1_key`, `int1_unique`, `connection_id`)
VALUES (50, 505050, -505050, 505050, $conn_id);
--error 0, ER_LOCK_DEADLOCK, ER_LOCK_WAIT_TIMEOUT, ER_DUP_ENTRY
eval INSERT INTO t1 (`id`, `int2`, `int2_key`, `int2_unique`, `connection_id`)
VALUES (50, -505050, 505050, -505050, $conn_id);
# And some "bogus" deletes:
--echo *** Executing DELETE of rows with pk between 449 and 540, single statement.
--error 0, ER_LOCK_DEADLOCK, ER_LOCK_WAIT_TIMEOUT, ER_CHECKREAD
DELETE FROM t1 WHERE `pk` BETWEEN 449 AND 540;
--echo *** Enabling query log.
--enable_query_log
ROLLBACK;