#### db_type: pg ####
#### test_type: dda_double_write_skew1 ####
#### 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_skew1 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_double_write_skew1 test run----------
Q1-T1 execute opt: 'BEGIN;'
Q1 finished at: 2022-5-23 11:7:33:925:959
Q2-T1 execute sql: 'UPDATE t1 SET v=1 WHERE k=0;'
Q2 finished at: 2022-5-23 11:7:33:927:983
                                        Q3-T2 execute opt: 'BEGIN;'
                                        Q3 finished at: 2022-5-23 11:7:34:425:691
                                        Q4-T2 execute sql: 'UPDATE t1 SET v=1 WHERE k=1;'
                                        Q4 finished at: 2022-5-23 11:7:34:427:654
                                        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: 2022-5-23 11:7:34:429:189
Q6-T1 execute sql: 'UPDATE t1 SET v=2 WHERE k=1;'
                                        Q7-T2 execute opt: 'COMMIT;'
                                        Q7 finished at: 2022-5-23 11:7:35:429:35
Q6 failed reason: ERROR: could not serialize access due to concurrent update; errcode: 40001
Q6 failed at: 2022-5-23 11:7:36:29:346

Test Result: Rollback
Reason: ERROR: could not serialize access due to concurrent update;