#### db_type: pg #### #### test_type: sda_lost_self_update_committed #### #### isolation: read-committed #### 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 = read-committed for each session ----------wat_sda_lost_self_update_committed 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 opt: 'COMMIT;' ----------wat_sda_lost_self_update_committed test run---------- Q1-T1 execute opt: 'BEGIN;' Q1 finished at: 2022-5-23 11:1:35:667:647 Q2-T1 execute sql: 'UPDATE t1 SET v=1 WHERE k=0;' Q2 finished at: 2022-5-23 11:1:35:670:182 Q3-T2 execute opt: 'BEGIN;' Q3 finished at: 2022-5-23 11:1:36:167:447 Q4-T2 execute sql: 'UPDATE t1 SET v=2 WHERE k=0;' Q6-T1 execute sql: 'SELECT * FROM t1 WHERE k=0;' current_result: (0,1) *(1) expected_result: (0,1) *(2) expected_result: (0,1) Q6 finished at: 2022-5-23 11:1:36:668:280 Q7-T1 execute opt: 'COMMIT;' Q7 finished at: 2022-5-23 11:1:36:670:368 Q4 finished at: 2022-5-23 11:1:36:670:415 Q5-T2 execute opt: 'COMMIT;' Q5 finished at: 2022-5-23 11:1:36:672:501 Q8-T3 execute sql: 'SELECT * FROM t1;' current_result: (0,2) *(1) expected_result: (0,2) (2) expected_result: (0,1) Q8 finished at: 2022-5-23 11:1:36:674:127 Q9-T3 execute opt: 'COMMIT;' Q9 finished at: 2022-5-23 11:1:36:674:939 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