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Parsed test spec with 2 sessions
starting permutation: wxry1 c1 r2 wyrx2 c2
step wxry1: INSERT INTO child (parent_id) VALUES (0);
step c1: COMMIT;
step r2: SELECT TRUE;
?column?
--------
t
(1 row)
step wyrx2: DELETE FROM parent WHERE parent_id = 0;
ERROR: child row exists
step c2: COMMIT;
starting permutation: wxry1 r2 c1 wyrx2 c2
step wxry1: INSERT INTO child (parent_id) VALUES (0);
step r2: SELECT TRUE;
?column?
--------
t
(1 row)
step c1: COMMIT;
step wyrx2: DELETE FROM parent WHERE parent_id = 0;
ERROR: could not serialize access due to read/write dependencies among transactions
step c2: COMMIT;
starting permutation: wxry1 r2 wyrx2 c1 c2
step wxry1: INSERT INTO child (parent_id) VALUES (0);
step r2: SELECT TRUE;
?column?
--------
t
(1 row)
step wyrx2: DELETE FROM parent WHERE parent_id = 0;
step c1: COMMIT;
step c2: COMMIT;
ERROR: could not serialize access due to read/write dependencies among transactions
starting permutation: wxry1 r2 wyrx2 c2 c1
step wxry1: INSERT INTO child (parent_id) VALUES (0);
step r2: SELECT TRUE;
?column?
--------
t
(1 row)
step wyrx2: DELETE FROM parent WHERE parent_id = 0;
step c2: COMMIT;
step c1: COMMIT;
ERROR: could not serialize access due to read/write dependencies among transactions
starting permutation: r2 wxry1 c1 wyrx2 c2
step r2: SELECT TRUE;
?column?
--------
t
(1 row)
step wxry1: INSERT INTO child (parent_id) VALUES (0);
step c1: COMMIT;
step wyrx2: DELETE FROM parent WHERE parent_id = 0;
ERROR: could not serialize access due to read/write dependencies among transactions
step c2: COMMIT;
starting permutation: r2 wxry1 wyrx2 c1 c2
step r2: SELECT TRUE;
?column?
--------
t
(1 row)
step wxry1: INSERT INTO child (parent_id) VALUES (0);
step wyrx2: DELETE FROM parent WHERE parent_id = 0;
step c1: COMMIT;
step c2: COMMIT;
ERROR: could not serialize access due to read/write dependencies among transactions
starting permutation: r2 wxry1 wyrx2 c2 c1
step r2: SELECT TRUE;
?column?
--------
t
(1 row)
step wxry1: INSERT INTO child (parent_id) VALUES (0);
step wyrx2: DELETE FROM parent WHERE parent_id = 0;
step c2: COMMIT;
step c1: COMMIT;
ERROR: could not serialize access due to read/write dependencies among transactions
starting permutation: r2 wyrx2 wxry1 c1 c2
step r2: SELECT TRUE;
?column?
--------
t
(1 row)
step wyrx2: DELETE FROM parent WHERE parent_id = 0;
step wxry1: INSERT INTO child (parent_id) VALUES (0);
step c1: COMMIT;
step c2: COMMIT;
ERROR: could not serialize access due to read/write dependencies among transactions
starting permutation: r2 wyrx2 wxry1 c2 c1
step r2: SELECT TRUE;
?column?
--------
t
(1 row)
step wyrx2: DELETE FROM parent WHERE parent_id = 0;
step wxry1: INSERT INTO child (parent_id) VALUES (0);
step c2: COMMIT;
step c1: COMMIT;
ERROR: could not serialize access due to read/write dependencies among transactions
starting permutation: r2 wyrx2 c2 wxry1 c1
step r2: SELECT TRUE;
?column?
--------
t
(1 row)
step wyrx2: DELETE FROM parent WHERE parent_id = 0;
step c2: COMMIT;
step wxry1: INSERT INTO child (parent_id) VALUES (0);
ERROR: parent row missing
step c1: COMMIT;
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