#### db_type: ob #### #### test_type: dda_double_write_skew2 #### #### isolation: repeatable-read #### current_result: The query result of the current SQL statement. Each row of table is separated by a space, and the fields in each row are separated by commas expected_result: The expected result is the expected query result for each SQL that conforms to the serializability theory ----------rat_dda_double_write_skew2 test prepare---------- Q0-T1 execute sql: 'DROP TABLE t1;' Q0-T1 execute sql: 'CREATE TABLE t1 (k INT PRIMARY KEY, v INT);' Q0-T1 execute sql: 'INSERT INTO t1 VALUES (0, 0);' Q0-T1 execute sql: 'INSERT INTO t1 VALUES (1, 0);' Q0-T1 execute opt: 'COMMIT;' ----------rat_dda_double_write_skew2 test run---------- Q1-T1 execute sql: 'BEGIN;' Q1 finished at: 2022-5-20 15:9:4:283:333 Q2-T1 execute sql: 'UPDATE t1 SET v=1 WHERE k=0;' Q2 finished at: 2022-5-20 15:9:4:291:752 Q3-T2 execute sql: 'BEGIN;' Q3 finished at: 2022-5-20 15:9:4:383:173 Q4-T2 execute sql: 'UPDATE t1 SET v=1 WHERE k=1;' Q4 finished at: 2022-5-20 15:9:4:384:766 Q5-T2 execute sql: 'UPDATE t1 SET v=2 WHERE k=0;' Q6-T1 execute sql: 'SELECT * FROM t1 WHERE k=1;' current_result: (1,0) *(1) expected_result: (1,0) (2) expected_result: (1,1) Q6 finished at: 2022-5-20 15:9:4:485:569 Q7-T1 execute opt: 'COMMIT;' Q7 finished at: 2022-5-20 15:9:4:488:510 Q5 failed reason: [MySQL][ODBC 8.0(w) Driver][mysqld-5.7.25]can't serialize access for this transaction errcode: HY000 Q5 failed at: 2022-5-20 15:9:4:989:497 Test Result: Rollback Reason: [MySQL][ODBC 8.0(w) Driver][mysqld-5.7.25]can't serialize access for this transaction