#### db_type: crdb #### #### test_type: dda_double_write_skew2 #### #### isolation: serializable #### 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 = serializable for each session ----------rat_dda_double_write_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);' ----------rat_dda_double_write_skew2 test run---------- Q1-T1 execute sql: 'BEGIN TRANSACTION;' Q1 finished at: 2022-4-2 16:52:38:176:466 Q2-T1 execute sql: 'UPDATE t1 SET v=1 WHERE k=0;' Q2 finished at: 2022-4-2 16:52:38:180:183 Q3-T2 execute sql: 'BEGIN TRANSACTION;' Q3 finished at: 2022-4-2 16:52:38:276:786 Q4-T2 execute sql: 'UPDATE t1 SET v=1 WHERE k=1;' Q4 finished at: 2022-4-2 16:52:38:280:743 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: 2022-4-2 16:52:38:378:469 Q7-T1 execute sql: 'COMMIT TRANSACTION;' Q7 finished at: 2022-4-2 16:52:38:382:239 Q5 finished at: 2022-4-2 16:52:38:390:589 Q8-T2 execute sql: 'COMMIT TRANSACTION;' Q8 finished at: 2022-4-2 16:52:38:483:60 Q9-T3 execute sql: 'SELECT * FROM t1 ORDER BY k;' current_result: (0,2) (1,1) *(1) expected_result: (0,2) (1,1) (2) expected_result: (0,1) (1,1) Q9 finished at: 2022-4-2 16:52:38:486:960 The current result is consistent with the [(1) expected_result] of serial scheduling Test Result: Avoid Reason: Data anomaly did not occur and the data is consistent