#### db_type: tidb #### #### test_type: sda_lost_self_update #### #### 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 ----------rat_sda_lost_self_update 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'; ----------rat_sda_lost_self_update test run---------- Q1-T1 execute sql: 'BEGIN OPTIMISTIC;' Q1 finished at: 2022-4-1 17:25:36:907:809 Q2-T1 execute sql: 'UPDATE t1 SET v=1 WHERE k=0;' Q2 finished at: 2022-4-1 17:25:36:909:457 Q3-T2 execute sql: 'BEGIN OPTIMISTIC;' Q3 finished at: 2022-4-1 17:25:37:7:937 Q4-T2 execute sql: 'UPDATE t1 SET v=2 WHERE k=0;' Q4 finished at: 2022-4-1 17:25:37:9:828 Q5-T1 execute sql: 'SELECT * FROM t1 WHERE k=0;' current_result: (0,1) *(1) expected_result: (0,1) *(2) expected_result: (0,1) Q5 finished at: 2022-4-1 17:25:37:108:337 Q6-T1 execute opt: 'COMMIT'; Q6 finished at: 2022-4-1 17:25:37:109:812 Q7-T2 execute opt: 'COMMIT'; Q7 failed reason: [MySQL][ODBC 8.0(w) Driver]Write conflict, txnStartTS=432224373835563008, conflictStartTS=432224373809348608, conflictCommitTS=432224373862301696, key={tableID=2562, handle=0} primary=[]byte(nil) [try again later] errcode: HY000 Q7 failed at: 2022-4-1 17:25:37:908:601 Test Result: Rollback [MySQL][ODBC 8.0(w) Driver]Write conflict, txnStartTS=432224373835563008, conflictStartTS=432224373809348608, conflictCommitTS=432224373862301696, key={tableID=2562, handle=0} primary=[]byte(nil) [try again later]