SET autocommit = 0 ;
START TRANSACTION;
*** multi-statemement insert, inserting first positive then negative number:
INSERT INTO t1 (`id`, `int1`, `int1_key`, `int1_unique`,
`int2`, `int2_key`, `int2_unique`,
`for_update`, `connection_id`, `thread_id`, `is_uncommitted`, `is_consistent`)
VALUES (40 , 40 , 40 , CONNECTION_ID(),
-40 , -40 , -CONNECTION_ID(),
0 , CONNECTION_ID(), 0 , 0 , 1 );
INSERT INTO t1 (`id`, `int1`, `int1_key`, `int1_unique`,
`int2`, `int2_key`, `int2_unique`,
`for_update`, `connection_id`, `thread_id`, `is_uncommitted`, `is_consistent`)
VALUES (-40 , -40 , -40 , -CONNECTION_ID(),
40 , 40 , CONNECTION_ID(),
0 , CONNECTION_ID(), 0 , 0 , 1 );
COMMIT;
START TRANSACTION;
*** insert multiple rows using a single statement:
INSERT INTO t1 (`id`, `int1`, `int1_key`, `int1_unique`,
`int2`, `int2_key`, `int2_unique`,
`for_update`, `connection_id`, `thread_id`, `is_uncommitted`, `is_consistent`)
VALUES (41 , 41 , 41 , CONNECTION_ID()+1 ,
-41 , -41 , -(CONNECTION_ID()+1 ),
0 , CONNECTION_ID(), 0 , 0 , 1 ),
(41 , 41 , 41 , CONNECTION_ID()+2 ,
41 , 41 , CONNECTION_ID()+2 ,
0 , CONNECTION_ID(), 0 , 0 , 0 ),
(41 , -41 , -41 , -(CONNECTION_ID()+2 ),
-41 , -41 , -(CONNECTION_ID()+2 ),
0 , CONNECTION_ID(), 0 , 0 , 0 );
COMMIT;
START TRANSACTION;
*** INSERT IGNORE using both known duplicate values and non-duplicates:
INSERT IGNORE INTO t1 (`id`, `int1`, `int1_key`, `int1_unique`,
`int2`, `int2_key`, `int2_unique`,
`for_update`, `connection_id`, `thread_id`, `is_uncommitted`, `is_consistent`)
VALUES (42 , 42 , 42 , CONNECTION_ID()+3 ,
-42 , -42 , -(CONNECTION_ID()+3 ),
0 , CONNECTION_ID(), 0 , 0 , 1 );
INSERT IGNORE INTO t1 (`pk`, `id`, `int1`, `int1_key`, `int1_unique`,
`int2`, `int2_key`, `int2_unique`,
`for_update`, `connection_id`, `thread_id`, `is_uncommitted`, `is_consistent`)
VALUES (5 , 43 , 42 , 42 , CONNECTION_ID(),
-42 , -42 , CONNECTION_ID(),
0 , CONNECTION_ID(), 0 , 0 , 0 );
INSERT IGNORE INTO t1 (`id`, `int1`, `int1_key`, `int1_unique`,
`int2`, `int2_key`, `int2_unique`,
`for_update`, `connection_id`, `thread_id`, `is_uncommitted`, `is_consistent`)
VALUES (44 , 42 , 42 , (CONNECTION_ID() + 1000 ) MOD 5000 ,
-42 , -42 , -((CONNECTION_ID() + 1000 ) MOD 5000 ),
0 , CONNECTION_ID(), 0 , 0 , 1 );
COMMIT;
Messung V0.5 in Prozent C=93 H=93 G=92
¤ Dauer der Verarbeitung: 0.9 Sekunden
(vorverarbeitet am 2026-10-11)
¤
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