#### db_type: mysql #### #### test_type: dda_read_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 set TXN_ISOLATION = repeatable-read for each session ----------rat_dda_read_skew2 test prepare---------- Q0-T1 execute sql: 'DROP TABLE IF EXISTS 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_read_skew2 test run---------- Q1-T1 execute opt: 'BEGIN;' Q1 finished at: 2022-4-1 17:41:1:376:85 Q2-T1 execute sql: 'UPDATE t1 SET v=1 WHERE k=0;' Q2 finished at: 2022-4-1 17:41:1:377:788 Q3-T2 execute opt: 'BEGIN;' Q3 finished at: 2022-4-1 17:41:1:476:70 Q4-T2 execute sql: 'SELECT * FROM t1 WHERE k=1;' current_result: (1,0) (1) expected_result: (1,1) *(2) expected_result: (1,0) Q4 finished at: 2022-4-1 17:41:1:477:972 Q5-T2 execute sql: 'SELECT * FROM t1 WHERE k=0;' current_result: (0,0) (1) expected_result: (0,1) *(2) expected_result: (0,0) Q5 finished at: 2022-4-1 17:41:1:479:634 Q6-T1 execute sql: 'UPDATE t1 SET v=1 WHERE k=1;' Q6 finished at: 2022-4-1 17:41:1:577:233 Q7-T1 execute opt: 'COMMIT'; Q7 finished at: 2022-4-1 17:41:1:585:115 Q8-T2 execute opt: 'COMMIT'; Q8 finished at: 2022-4-1 17:41:1:679:738 Q9-T3 execute sql: 'SELECT * FROM t1 ORDER BY k;' current_result: (0,1) (1,1) *(1) expected_result: (0,1) (1,1) *(2) expected_result: (0,1) (1,1) Q9 finished at: 2022-4-1 17:41:1:681:610 Q10-T3 execute opt: 'COMMIT'; Q10 finished at: 2022-4-1 17:41:1:682:426 The current result is consistent with the [(2) expected_result] of serial scheduling Test Result: Avoid Reason: Data anomaly did not occur and the data is consistent