#### db_type: gp #### #### test_type: sda_lost_update_c1 #### #### 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 ----------wat_sda_lost_update_c1 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_update_c1 test run---------- Q1-T1 execute opt: 'BEGIN' Q1 finished at: 2022-4-11 12:11:7:168:297 Q2-T1 execute sql: 'SELECT * FROM t1 WHERE k=0;' current_result: (0,0) *(1) expected_result: (0,0) (2) expected_result: (0,2) Q2 finished at: 2022-4-11 12:11:7:179:295 Q3-T2 execute opt: 'BEGIN' Q3 finished at: 2022-4-11 12:11:8:168:308 Q4-T2 execute sql: 'UPDATE t1 SET v=2 WHERE k=0;' Q4 finished at: 2022-4-11 12:11:8:182:815 Q5-T1 execute sql: 'UPDATE t1 SET v=1 WHERE k=0;' Q7-T2 execute opt: 'COMMIT'; Q7 finished at: 2022-4-11 12:11:10:187:226 Q5 failed reason: ERROR: could not serialize access due to concurrent update (seg1 9.135.218.12:6001 pid=20622); errcode: 40001 Q5 failed at: 2022-4-11 12:11:10:693:851 Test Result: Rollback Reason: ERROR: could not serialize access due to concurrent update (seg1 9.135.218.12:6001 pid=20622);