#### db_type: pg #### #### test_type: dda_write_read_skew_committed #### #### 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_write_read_skew_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 sql: 'INSERT INTO t1 VALUES (1, 0);' Q0-T1 execute opt: 'COMMIT'; ----------rat_dda_write_read_skew_committed test run---------- Q1-T1 execute opt: 'BEGIN;' Q1 finished at: 2022-4-1 12:18:7:916:260 Q2-T1 execute sql: 'UPDATE t1 SET v=1 WHERE k=0;' Q2 finished at: 2022-4-1 12:18:7:918:244 Q3-T2 execute opt: 'BEGIN;' Q3 finished at: 2022-4-1 12:18:8:16:243 Q4-T2 execute sql: 'UPDATE t1 SET v=1 WHERE k=1;' Q4 finished at: 2022-4-1 12:18:8:18:548 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 12:18:8:20:34 Q6-T2 execute opt: 'COMMIT'; Q6 finished at: 2022-4-1 12:18:8:21:767 Q7-T1 execute sql: 'SELECT * FROM t1 WHERE k=1;' Q7 failed reason: ERROR: could not serialize access due to read/write dependencies among transactions; errcode: 40001 Q7 failed at: 2022-4-1 12:18:8:817:371 Test Result: Rollback Reason: ERROR: could not serialize access due to read/write dependencies among transactions;