Parsed test spec with 3 sessions

starting permutation: wx1 wx2 c1 c2 read
step wx1: UPDATE accounts SET balance = balance - 200 WHERE accountid = 'checking' RETURNING balance;
balance
-------
    400
(1 row)

step wx2: UPDATE accounts SET balance = balance + 450 WHERE accountid = 'checking' RETURNING balance; <waiting ...>
step c1: COMMIT;
step wx2: <... completed>
balance
-------
    850
(1 row)

step c2: COMMIT;
step read: SELECT * FROM accounts ORDER BY accountid;
accountid|balance|balance2
---------+-------+--------
checking |    850|    1700
savings  |    600|    1200
(2 rows)


starting permutation: wy1 wy2 c1 c2 read
step wy1: UPDATE accounts SET balance = balance + 500 WHERE accountid = 'checking' RETURNING balance;
balance
-------
   1100
(1 row)

step wy2: UPDATE accounts SET balance = balance + 1000 WHERE accountid = 'checking' AND balance < 1000  RETURNING balance; <waiting ...>
step c1: COMMIT;
step wy2: <... completed>
balance
-------
(0 rows)

step c2: COMMIT;
step read: SELECT * FROM accounts ORDER BY accountid;
accountid|balance|balance2
---------+-------+--------
checking |   1100|    2200
savings  |    600|    1200
(2 rows)


starting permutation: wx1 wx2 r1 c2 read
step wx1: UPDATE accounts SET balance = balance - 200 WHERE accountid = 'checking' RETURNING balance;
balance
-------
    400
(1 row)

step wx2: UPDATE accounts SET balance = balance + 450 WHERE accountid = 'checking' RETURNING balance; <waiting ...>
step r1: ROLLBACK;
step wx2: <... completed>
balance
-------
   1050
(1 row)

step c2: COMMIT;
step read: SELECT * FROM accounts ORDER BY accountid;
accountid|balance|balance2
---------+-------+--------
checking |   1050|    2100
savings  |    600|    1200
(2 rows)


starting permutation: wy1 wy2 r1 c2 read
step wy1: UPDATE accounts SET balance = balance + 500 WHERE accountid = 'checking' RETURNING balance;
balance
-------
   1100
(1 row)

step wy2: UPDATE accounts SET balance = balance + 1000 WHERE accountid = 'checking' AND balance < 1000  RETURNING balance; <waiting ...>
step r1: ROLLBACK;
step wy2: <... completed>
balance
-------
   1600
(1 row)

step c2: COMMIT;
step read: SELECT * FROM accounts ORDER BY accountid;
accountid|balance|balance2
---------+-------+--------
checking |   1600|    3200
savings  |    600|    1200
(2 rows)


starting permutation: wx1 d1 wx2 c1 c2 read
step wx1: UPDATE accounts SET balance = balance - 200 WHERE accountid = 'checking' RETURNING balance;
balance
-------
    400
(1 row)

step d1: DELETE FROM accounts WHERE accountid = 'checking' AND balance < 1500 RETURNING balance;
balance
-------
    400
(1 row)

step wx2: UPDATE accounts SET balance = balance + 450 WHERE accountid = 'checking' RETURNING balance; <waiting ...>
step c1: COMMIT;
step wx2: <... completed>
balance
-------
(0 rows)

step c2: COMMIT;
step read: SELECT * FROM accounts ORDER BY accountid;
accountid|balance|balance2
---------+-------+--------
savings  |    600|    1200
(1 row)


starting permutation: wx2 d1 c2 c1 read
step wx2: UPDATE accounts SET balance = balance + 450 WHERE accountid = 'checking' RETURNING balance;
balance
-------
   1050
(1 row)

step d1: DELETE FROM accounts WHERE accountid = 'checking' AND balance < 1500 RETURNING balance; <waiting ...>
step c2: COMMIT;
step d1: <... completed>
balance
-------
   1050
(1 row)

step c1: COMMIT;
step read: SELECT * FROM accounts ORDER BY accountid;
accountid|balance|balance2
---------+-------+--------
savings  |    600|    1200
(1 row)


starting permutation: wx2 wx2 d1 c2 c1 read
step wx2: UPDATE accounts SET balance = balance + 450 WHERE accountid = 'checking' RETURNING balance;
balance
-------
   1050
(1 row)

step wx2: UPDATE accounts SET balance = balance + 450 WHERE accountid = 'checking' RETURNING balance;
balance
-------
   1500
(1 row)

step d1: DELETE FROM accounts WHERE accountid = 'checking' AND balance < 1500 RETURNING balance; <waiting ...>
step c2: COMMIT;
step d1: <... completed>
balance
-------
(0 rows)

step c1: COMMIT;
step read: SELECT * FROM accounts ORDER BY accountid;
accountid|balance|balance2
---------+-------+--------
checking |   1500|    3000
savings  |    600|    1200
(2 rows)


starting permutation: wx2 d2 d1 c2 c1 read
step wx2: UPDATE accounts SET balance = balance + 450 WHERE accountid = 'checking' RETURNING balance;
balance
-------
   1050
(1 row)

step d2: DELETE FROM accounts WHERE accountid = 'checking';
step d1: DELETE FROM accounts WHERE accountid = 'checking' AND balance < 1500 RETURNING balance; <waiting ...>
step c2: COMMIT;
step d1: <... completed>
balance
-------
(0 rows)

step c1: COMMIT;
step read: SELECT * FROM accounts ORDER BY accountid;
accountid|balance|balance2
---------+-------+--------
savings  |    600|    1200
(1 row)


starting permutation: wx1 d1 wx2 r1 c2 read
step wx1: UPDATE accounts SET balance = balance - 200 WHERE accountid = 'checking' RETURNING balance;
balance
-------
    400
(1 row)

step d1: DELETE FROM accounts WHERE accountid = 'checking' AND balance < 1500 RETURNING balance;
balance
-------
    400
(1 row)

step wx2: UPDATE accounts SET balance = balance + 450 WHERE accountid = 'checking' RETURNING balance; <waiting ...>
step r1: ROLLBACK;
step wx2: <... completed>
balance
-------
   1050
(1 row)

step c2: COMMIT;
step read: SELECT * FROM accounts ORDER BY accountid;
accountid|balance|balance2
---------+-------+--------
checking |   1050|    2100
savings  |    600|    1200
(2 rows)


starting permutation: wx2 d1 r2 c1 read
step wx2: UPDATE accounts SET balance = balance + 450 WHERE accountid = 'checking' RETURNING balance;
balance
-------
   1050
(1 row)

step d1: DELETE FROM accounts WHERE accountid = 'checking' AND balance < 1500 RETURNING balance; <waiting ...>
step r2: ROLLBACK;
step d1: <... completed>
balance
-------
    600
(1 row)

step c1: COMMIT;
step read: SELECT * FROM accounts ORDER BY accountid;
accountid|balance|balance2
---------+-------+--------
savings  |    600|    1200
(1 row)


starting permutation: wx2 wx2 d1 r2 c1 read
step wx2: UPDATE accounts SET balance = balance + 450 WHERE accountid = 'checking' RETURNING balance;
balance
-------
   1050
(1 row)

step wx2: UPDATE accounts SET balance = balance + 450 WHERE accountid = 'checking' RETURNING balance;
balance
-------
   1500
(1 row)

step d1: DELETE FROM accounts WHERE accountid = 'checking' AND balance < 1500 RETURNING balance; <waiting ...>
step r2: ROLLBACK;
step d1: <... completed>
balance
-------
    600
(1 row)

step c1: COMMIT;
step read: SELECT * FROM accounts ORDER BY accountid;
accountid|balance|balance2
---------+-------+--------
savings  |    600|    1200
(1 row)


starting permutation: wx2 d2 d1 r2 c1 read
step wx2: UPDATE accounts SET balance = balance + 450 WHERE accountid = 'checking' RETURNING balance;
balance
-------
   1050
(1 row)

step d2: DELETE FROM accounts WHERE accountid = 'checking';
step d1: DELETE FROM accounts WHERE accountid = 'checking' AND balance < 1500 RETURNING balance; <waiting ...>
step r2: ROLLBACK;
step d1: <... completed>
balance
-------
    600
(1 row)

step c1: COMMIT;
step read: SELECT * FROM accounts ORDER BY accountid;
accountid|balance|balance2
---------+-------+--------
savings  |    600|    1200
(1 row)


starting permutation: d1 wx2 c1 c2 read
step d1: DELETE FROM accounts WHERE accountid = 'checking' AND balance < 1500 RETURNING balance;
balance
-------
    600
(1 row)

step wx2: UPDATE accounts SET balance = balance + 450 WHERE accountid = 'checking' RETURNING balance; <waiting ...>
step c1: COMMIT;
step wx2: <... completed>
balance
-------
(0 rows)

step c2: COMMIT;
step read: SELECT * FROM accounts ORDER BY accountid;
accountid|balance|balance2
---------+-------+--------
savings  |    600|    1200
(1 row)


starting permutation: d1 wx2 r1 c2 read
step d1: DELETE FROM accounts WHERE accountid = 'checking' AND balance < 1500 RETURNING balance;
balance
-------
    600
(1 row)

step wx2: UPDATE accounts SET balance = balance + 450 WHERE accountid = 'checking' RETURNING balance; <waiting ...>
step r1: ROLLBACK;
step wx2: <... completed>
balance
-------
   1050
(1 row)

step c2: COMMIT;
step read: SELECT * FROM accounts ORDER BY accountid;
accountid|balance|balance2
---------+-------+--------
checking |   1050|    2100
savings  |    600|    1200
(2 rows)


starting permutation: wnested2 c1 c2 read
s2: NOTICE:  upid: text checking = text checking: t
s2: NOTICE:  up: numeric 600 > numeric 200.0: t
s2: NOTICE:  lock_id: text checking = text checking: t
s2: NOTICE:  lock_bal: numeric 600 > numeric 200.0: t
s2: NOTICE:  upid: text savings = text checking: f
step wnested2: 
    UPDATE accounts SET balance = balance - 1200
    WHERE noisy_oper('upid', accountid, '=', 'checking')
    AND noisy_oper('up', balance, '>', 200.0)
    AND EXISTS (
        SELECT accountid
        FROM accounts_ext ae
        WHERE noisy_oper('lock_id', ae.accountid, '=', accounts.accountid)
            AND noisy_oper('lock_bal', ae.balance, '>', 200.0)
        FOR UPDATE
    );

step c1: COMMIT;
step c2: COMMIT;
step read: SELECT * FROM accounts ORDER BY accountid;
accountid|balance|balance2
---------+-------+--------
checking |   -600|   -1200
savings  |    600|    1200
(2 rows)


starting permutation: wx1 wxext1 wnested2 c1 c2 read
step wx1: UPDATE accounts SET balance = balance - 200 WHERE accountid = 'checking' RETURNING balance;
balance
-------
    400
(1 row)

step wxext1: UPDATE accounts_ext SET balance = balance - 200 WHERE accountid = 'checking' RETURNING balance;
balance
-------
    400
(1 row)

s2: NOTICE:  upid: text checking = text checking: t
s2: NOTICE:  up: numeric 600 > numeric 200.0: t
s2: NOTICE:  lock_id: text checking = text checking: t
s2: NOTICE:  lock_bal: numeric 600 > numeric 200.0: t
step wnested2: 
    UPDATE accounts SET balance = balance - 1200
    WHERE noisy_oper('upid', accountid, '=', 'checking')
    AND noisy_oper('up', balance, '>', 200.0)
    AND EXISTS (
        SELECT accountid
        FROM accounts_ext ae
        WHERE noisy_oper('lock_id', ae.accountid, '=', accounts.accountid)
            AND noisy_oper('lock_bal', ae.balance, '>', 200.0)
        FOR UPDATE
    );
 <waiting ...>
step c1: COMMIT;
s2: NOTICE:  lock_id: text checking = text checking: t
s2: NOTICE:  lock_bal: numeric 400 > numeric 200.0: t
s2: NOTICE:  upid: text checking = text checking: t
s2: NOTICE:  up: numeric 400 > numeric 200.0: t
s2: NOTICE:  lock_id: text checking = text checking: t
s2: NOTICE:  lock_bal: numeric 600 > numeric 200.0: t
s2: NOTICE:  lock_id: text checking = text checking: t
s2: NOTICE:  lock_bal: numeric 400 > numeric 200.0: t
s2: NOTICE:  upid: text savings = text checking: f
step wnested2: <... completed>
step c2: COMMIT;
step read: SELECT * FROM accounts ORDER BY accountid;
accountid|balance|balance2
---------+-------+--------
checking |   -800|   -1600
savings  |    600|    1200
(2 rows)


starting permutation: wx1 wx1 wxext1 wnested2 c1 c2 read
step wx1: UPDATE accounts SET balance = balance - 200 WHERE accountid = 'checking' RETURNING balance;
balance
-------
    400
(1 row)

step wx1: UPDATE accounts SET balance = balance - 200 WHERE accountid = 'checking' RETURNING balance;
balance
-------
    200
(1 row)

step wxext1: UPDATE accounts_ext SET balance = balance - 200 WHERE accountid = 'checking' RETURNING balance;
balance
-------
    400
(1 row)

s2: NOTICE:  upid: text checking = text checking: t
s2: NOTICE:  up: numeric 600 > numeric 200.0: t
s2: NOTICE:  lock_id: text checking = text checking: t
s2: NOTICE:  lock_bal: numeric 600 > numeric 200.0: t
step wnested2: 
    UPDATE accounts SET balance = balance - 1200
    WHERE noisy_oper('upid', accountid, '=', 'checking')
    AND noisy_oper('up', balance, '>', 200.0)
    AND EXISTS (
        SELECT accountid
        FROM accounts_ext ae
        WHERE noisy_oper('lock_id', ae.accountid, '=', accounts.accountid)
            AND noisy_oper('lock_bal', ae.balance, '>', 200.0)
        FOR UPDATE
    );
 <waiting ...>
step c1: COMMIT;
s2: NOTICE:  lock_id: text checking = text checking: t
s2: NOTICE:  lock_bal: numeric 400 > numeric 200.0: t
s2: NOTICE:  upid: text checking = text checking: t
s2: NOTICE:  up: numeric 200 > numeric 200.0: f
s2: NOTICE:  upid: text savings = text checking: f
step wnested2: <... completed>
step c2: COMMIT;
step read: SELECT * FROM accounts ORDER BY accountid;
accountid|balance|balance2
---------+-------+--------
checking |    200|     400
savings  |    600|    1200
(2 rows)


starting permutation: wx1 wx1 wxext1 wxext1 wnested2 c1 c2 read
step wx1: UPDATE accounts SET balance = balance - 200 WHERE accountid = 'checking' RETURNING balance;
balance
-------
    400
(1 row)

step wx1: UPDATE accounts SET balance = balance - 200 WHERE accountid = 'checking' RETURNING balance;
balance
-------
    200
(1 row)

step wxext1: UPDATE accounts_ext SET balance = balance - 200 WHERE accountid = 'checking' RETURNING balance;
balance
-------
    400
(1 row)

step wxext1: UPDATE accounts_ext SET balance = balance - 200 WHERE accountid = 'checking' RETURNING balance;
balance
-------
    200
(1 row)

s2: NOTICE:  upid: text checking = text checking: t
s2: NOTICE:  up: numeric 600 > numeric 200.0: t
s2: NOTICE:  lock_id: text checking = text checking: t
s2: NOTICE:  lock_bal: numeric 600 > numeric 200.0: t
step wnested2: 
    UPDATE accounts SET balance = balance - 1200
    WHERE noisy_oper('upid', accountid, '=', 'checking')
    AND noisy_oper('up', balance, '>', 200.0)
    AND EXISTS (
        SELECT accountid
        FROM accounts_ext ae
        WHERE noisy_oper('lock_id', ae.accountid, '=', accounts.accountid)
            AND noisy_oper('lock_bal', ae.balance, '>', 200.0)
        FOR UPDATE
    );
 <waiting ...>
step c1: COMMIT;
s2: NOTICE:  lock_id: text checking = text checking: t
s2: NOTICE:  lock_bal: numeric 200 > numeric 200.0: f
s2: NOTICE:  lock_id: text savings = text checking: f
s2: NOTICE:  upid: text savings = text checking: f
step wnested2: <... completed>
step c2: COMMIT;
step read: SELECT * FROM accounts ORDER BY accountid;
accountid|balance|balance2
---------+-------+--------
checking |    200|     400
savings  |    600|    1200
(2 rows)


starting permutation: wx1 wxext1 wxext1 wnested2 c1 c2 read
step wx1: UPDATE accounts SET balance = balance - 200 WHERE accountid = 'checking' RETURNING balance;
balance
-------
    400
(1 row)

step wxext1: UPDATE accounts_ext SET balance = balance - 200 WHERE accountid = 'checking' RETURNING balance;
balance
-------
    400
(1 row)

step wxext1: UPDATE accounts_ext SET balance = balance - 200 WHERE accountid = 'checking' RETURNING balance;
balance
-------
    200
(1 row)

s2: NOTICE:  upid: text checking = text checking: t
s2: NOTICE:  up: numeric 600 > numeric 200.0: t
s2: NOTICE:  lock_id: text checking = text checking: t
s2: NOTICE:  lock_bal: numeric 600 > numeric 200.0: t
step wnested2: 
    UPDATE accounts SET balance = balance - 1200
    WHERE noisy_oper('upid', accountid, '=', 'checking')
    AND noisy_oper('up', balance, '>', 200.0)
    AND EXISTS (
        SELECT accountid
        FROM accounts_ext ae
        WHERE noisy_oper('lock_id', ae.accountid, '=', accounts.accountid)
            AND noisy_oper('lock_bal', ae.balance, '>', 200.0)
        FOR UPDATE
    );
 <waiting ...>
step c1: COMMIT;
s2: NOTICE:  lock_id: text checking = text checking: t
s2: NOTICE:  lock_bal: numeric 200 > numeric 200.0: f
s2: NOTICE:  lock_id: text savings = text checking: f
s2: NOTICE:  upid: text savings = text checking: f
step wnested2: <... completed>
step c2: COMMIT;
step read: SELECT * FROM accounts ORDER BY accountid;
accountid|balance|balance2
---------+-------+--------
checking |    400|     800
savings  |    600|    1200
(2 rows)


starting permutation: wx1 tocds1 wnested2 c1 c2 read
step wx1: UPDATE accounts SET balance = balance - 200 WHERE accountid = 'checking' RETURNING balance;
balance
-------
    400
(1 row)

step tocds1: UPDATE accounts SET accountid = 'cds' WHERE accountid = 'checking';
s2: NOTICE:  upid: text checking = text checking: t
s2: NOTICE:  up: numeric 600 > numeric 200.0: t
s2: NOTICE:  lock_id: text checking = text checking: t
s2: NOTICE:  lock_bal: numeric 600 > numeric 200.0: t
step wnested2: 
    UPDATE accounts SET balance = balance - 1200
    WHERE noisy_oper('upid', accountid, '=', 'checking')
    AND noisy_oper('up', balance, '>', 200.0)
    AND EXISTS (
        SELECT accountid
        FROM accounts_ext ae
        WHERE noisy_oper('lock_id', ae.accountid, '=', accounts.accountid)
            AND noisy_oper('lock_bal', ae.balance, '>', 200.0)
        FOR UPDATE
    );
 <waiting ...>
step c1: COMMIT;
s2: NOTICE:  upid: text cds = text checking: f
s2: NOTICE:  upid: text savings = text checking: f
step wnested2: <... completed>
step c2: COMMIT;
step read: SELECT * FROM accounts ORDER BY accountid;
accountid|balance|balance2
---------+-------+--------
cds      |    400|     800
savings  |    600|    1200
(2 rows)


starting permutation: wx1 tocdsext1 wnested2 c1 c2 read
step wx1: UPDATE accounts SET balance = balance - 200 WHERE accountid = 'checking' RETURNING balance;
balance
-------
    400
(1 row)

step tocdsext1: UPDATE accounts_ext SET accountid = 'cds' WHERE accountid = 'checking';
s2: NOTICE:  upid: text checking = text checking: t
s2: NOTICE:  up: numeric 600 > numeric 200.0: t
s2: NOTICE:  lock_id: text checking = text checking: t
s2: NOTICE:  lock_bal: numeric 600 > numeric 200.0: t
step wnested2: 
    UPDATE accounts SET balance = balance - 1200
    WHERE noisy_oper('upid', accountid, '=', 'checking')
    AND noisy_oper('up', balance, '>', 200.0)
    AND EXISTS (
        SELECT accountid
        FROM accounts_ext ae
        WHERE noisy_oper('lock_id', ae.accountid, '=', accounts.accountid)
            AND noisy_oper('lock_bal', ae.balance, '>', 200.0)
        FOR UPDATE
    );
 <waiting ...>
step c1: COMMIT;
s2: NOTICE:  lock_id: text cds = text checking: f
s2: NOTICE:  lock_id: text savings = text checking: f
s2: NOTICE:  upid: text savings = text checking: f
step wnested2: <... completed>
step c2: COMMIT;
step read: SELECT * FROM accounts ORDER BY accountid;
accountid|balance|balance2
---------+-------+--------
checking |    400|     800
savings  |    600|    1200
(2 rows)


starting permutation: wx1 updwcte c1 c2 read
step wx1: UPDATE accounts SET balance = balance - 200 WHERE accountid = 'checking' RETURNING balance;
balance
-------
    400
(1 row)

step updwcte: WITH doup AS (UPDATE accounts SET balance = balance + 1100 WHERE accountid = 'checking' RETURNING *) UPDATE accounts a SET balance = doup.balance + 100 FROM doup RETURNING *; <waiting ...>
step c1: COMMIT;
step updwcte: <... completed>
accountid|balance|balance2|accountid|balance|balance2
---------+-------+--------+---------+-------+--------
savings  |   1600|    3200|checking |   1500|    3000
(1 row)

step c2: COMMIT;
step read: SELECT * FROM accounts ORDER BY accountid;
accountid|balance|balance2
---------+-------+--------
checking |   1500|    3000
savings  |   1600|    3200
(2 rows)


starting permutation: wx1 updwctefail c1 c2 read
step wx1: UPDATE accounts SET balance = balance - 200 WHERE accountid = 'checking' RETURNING balance;
balance
-------
    400
(1 row)

step updwctefail: WITH doup AS (UPDATE accounts SET balance = balance + 1100 WHERE accountid = 'checking' RETURNING *, update_checking(999)) UPDATE accounts a SET balance = doup.balance + 100 FROM doup RETURNING *; <waiting ...>
step c1: COMMIT;
step updwctefail: <... completed>
ERROR:  tuple to be updated was already modified by an operation triggered by the current command
step c2: COMMIT;
step read: SELECT * FROM accounts ORDER BY accountid;
accountid|balance|balance2
---------+-------+--------
checking |    400|     800
savings  |    600|    1200
(2 rows)


starting permutation: wx1 delwcte c1 c2 read
step wx1: UPDATE accounts SET balance = balance - 200 WHERE accountid = 'checking' RETURNING balance;
balance
-------
    400
(1 row)

step delwcte: WITH doup AS (UPDATE accounts SET balance = balance + 1100 WHERE accountid = 'checking' RETURNING *) DELETE FROM accounts a USING doup RETURNING *; <waiting ...>
step c1: COMMIT;
step delwcte: <... completed>
accountid|balance|balance2|accountid|balance|balance2
---------+-------+--------+---------+-------+--------
savings  |    600|    1200|checking |   1500|    3000
(1 row)

step c2: COMMIT;
step read: SELECT * FROM accounts ORDER BY accountid;
accountid|balance|balance2
---------+-------+--------
checking |   1500|    3000
(1 row)


starting permutation: wx1 delwctefail c1 c2 read
step wx1: UPDATE accounts SET balance = balance - 200 WHERE accountid = 'checking' RETURNING balance;
balance
-------
    400
(1 row)

step delwctefail: WITH doup AS (UPDATE accounts SET balance = balance + 1100 WHERE accountid = 'checking' RETURNING *, update_checking(999)) DELETE FROM accounts a USING doup RETURNING *; <waiting ...>
step c1: COMMIT;
step delwctefail: <... completed>
ERROR:  tuple to be deleted was already modified by an operation triggered by the current command
step c2: COMMIT;
step read: SELECT * FROM accounts ORDER BY accountid;
accountid|balance|balance2
---------+-------+--------
checking |    400|     800
savings  |    600|    1200
(2 rows)


starting permutation: read wx2 wb1 c2 c1 read
step read: SELECT * FROM accounts ORDER BY accountid;
accountid|balance|balance2
---------+-------+--------
checking |    600|    1200
savings  |    600|    1200
(2 rows)

step wx2: UPDATE accounts SET balance = balance + 450 WHERE accountid = 'checking' RETURNING balance;
balance
-------
   1050
(1 row)

step wb1: DELETE FROM accounts WHERE balance = 600 RETURNING *; <waiting ...>
step c2: COMMIT;
step wb1: <... completed>
accountid|balance|balance2
---------+-------+--------
savings  |    600|    1200
(1 row)

step c1: COMMIT;
step read: SELECT * FROM accounts ORDER BY accountid;
accountid|balance|balance2
---------+-------+--------
checking |   1050|    2100
(1 row)


starting permutation: upsert1 upsert2 c1 c2 read
step upsert1: 
	WITH upsert AS
	  (UPDATE accounts SET balance = balance + 500
	   WHERE accountid = 'savings'
	   RETURNING accountid)
	INSERT INTO accounts SELECT 'savings', 500
	  WHERE NOT EXISTS (SELECT 1 FROM upsert);

step upsert2: 
	WITH upsert AS
	  (UPDATE accounts SET balance = balance + 1234
	   WHERE accountid = 'savings'
	   RETURNING accountid)
	INSERT INTO accounts SELECT 'savings', 1234
	  WHERE NOT EXISTS (SELECT 1 FROM upsert);
 <waiting ...>
step c1: COMMIT;
step upsert2: <... completed>
step c2: COMMIT;
step read: SELECT * FROM accounts ORDER BY accountid;
accountid|balance|balance2
---------+-------+--------
checking |    600|    1200
savings  |   2334|    4668
(2 rows)


starting permutation: readp1 writep1 readp2 c1 c2
step readp1: SELECT tableoid::regclass, ctid, * FROM p WHERE b IN (0, 1) AND c = 0 FOR UPDATE;
tableoid|ctid |a|b|c
--------+-----+-+-+-
c1      |(0,1)|0|0|0
c1      |(0,4)|0|1|0
c2      |(0,1)|1|0|0
c2      |(0,4)|1|1|0
c3      |(0,1)|2|0|0
c3      |(0,4)|2|1|0
(6 rows)

step writep1: UPDATE p SET b = -1 WHERE a = 1 AND b = 1 AND c = 0;
step readp2: SELECT tableoid::regclass, ctid, * FROM p WHERE b IN (0, 1) AND c = 0 FOR UPDATE; <waiting ...>
step c1: COMMIT;
step readp2: <... completed>
tableoid|ctid |a|b|c
--------+-----+-+-+-
c1      |(0,1)|0|0|0
c1      |(0,4)|0|1|0
c2      |(0,1)|1|0|0
c3      |(0,1)|2|0|0
c3      |(0,4)|2|1|0
(5 rows)

step c2: COMMIT;

starting permutation: writep2 returningp1 c1 c2
step writep2: UPDATE p SET b = -b WHERE a = 1 AND c = 0;
step returningp1: 
	WITH u AS ( UPDATE p SET b = b WHERE a > 0 RETURNING * )
	  SELECT * FROM u;
 <waiting ...>
step c1: COMMIT;
step returningp1: <... completed>
a| b|c
-+--+-
1| 0|0
1| 0|1
1| 0|2
1|-1|0
1| 1|1
1| 1|2
1|-2|0
1| 2|1
1| 2|2
1|-3|0
2| 0|0
2| 0|1
2| 0|2
2| 1|0
2| 1|1
2| 1|2
2| 2|0
2| 2|1
2| 2|2
2| 3|0
(20 rows)

step c2: COMMIT;

starting permutation: writep3a writep3b c1 c2
step writep3a: UPDATE p SET b = -b WHERE c = 0;
step writep3b: UPDATE p SET b = -b WHERE c = 0; <waiting ...>
step c1: COMMIT;
step writep3b: <... completed>
step c2: COMMIT;

starting permutation: writep4a writep4b c1 c2 readp
step writep4a: UPDATE p SET c = 4 WHERE c = 0;
step writep4b: UPDATE p SET b = -4 WHERE c = 0; <waiting ...>
step c1: COMMIT;
step writep4b: <... completed>
step c2: COMMIT;
step readp: SELECT tableoid::regclass, ctid, * FROM p;
tableoid|ctid  |a|b|c
--------+------+-+-+-
c1      |(0,2) |0|0|1
c1      |(0,3) |0|0|2
c1      |(0,5) |0|1|1
c1      |(0,6) |0|1|2
c1      |(0,8) |0|2|1
c1      |(0,9) |0|2|2
c1      |(0,11)|0|0|4
c1      |(0,12)|0|1|4
c1      |(0,13)|0|2|4
c1      |(0,14)|0|3|4
c2      |(0,2) |1|0|1
c2      |(0,3) |1|0|2
c2      |(0,5) |1|1|1
c2      |(0,6) |1|1|2
c2      |(0,8) |1|2|1
c2      |(0,9) |1|2|2
c2      |(0,11)|1|0|4
c2      |(0,12)|1|1|4
c2      |(0,13)|1|2|4
c2      |(0,14)|1|3|4
c3      |(0,2) |2|0|1
c3      |(0,3) |2|0|2
c3      |(0,5) |2|1|1
c3      |(0,6) |2|1|2
c3      |(0,8) |2|2|1
c3      |(0,9) |2|2|2
c3      |(0,11)|2|0|4
c3      |(0,12)|2|1|4
c3      |(0,13)|2|2|4
c3      |(0,14)|2|3|4
(30 rows)


starting permutation: writep4a deletep4 c1 c2 readp
step writep4a: UPDATE p SET c = 4 WHERE c = 0;
step deletep4: DELETE FROM p WHERE c = 0; <waiting ...>
step c1: COMMIT;
step deletep4: <... completed>
step c2: COMMIT;
step readp: SELECT tableoid::regclass, ctid, * FROM p;
tableoid|ctid  |a|b|c
--------+------+-+-+-
c1      |(0,2) |0|0|1
c1      |(0,3) |0|0|2
c1      |(0,5) |0|1|1
c1      |(0,6) |0|1|2
c1      |(0,8) |0|2|1
c1      |(0,9) |0|2|2
c1      |(0,11)|0|0|4
c1      |(0,12)|0|1|4
c1      |(0,13)|0|2|4
c1      |(0,14)|0|3|4
c2      |(0,2) |1|0|1
c2      |(0,3) |1|0|2
c2      |(0,5) |1|1|1
c2      |(0,6) |1|1|2
c2      |(0,8) |1|2|1
c2      |(0,9) |1|2|2
c2      |(0,11)|1|0|4
c2      |(0,12)|1|1|4
c2      |(0,13)|1|2|4
c2      |(0,14)|1|3|4
c3      |(0,2) |2|0|1
c3      |(0,3) |2|0|2
c3      |(0,5) |2|1|1
c3      |(0,6) |2|1|2
c3      |(0,8) |2|2|1
c3      |(0,9) |2|2|2
c3      |(0,11)|2|0|4
c3      |(0,12)|2|1|4
c3      |(0,13)|2|2|4
c3      |(0,14)|2|3|4
(30 rows)


starting permutation: wx2 partiallock c2 c1 read
step wx2: UPDATE accounts SET balance = balance + 450 WHERE accountid = 'checking' RETURNING balance;
balance
-------
   1050
(1 row)

step partiallock: 
	SELECT * FROM accounts a1, accounts a2
	  WHERE a1.accountid = a2.accountid
	  FOR UPDATE OF a1;
 <waiting ...>
step c2: COMMIT;
step partiallock: <... completed>
accountid|balance|balance2|accountid|balance|balance2
---------+-------+--------+---------+-------+--------
checking |   1050|    2100|checking |    600|    1200
savings  |    600|    1200|savings  |    600|    1200
(2 rows)

step c1: COMMIT;
step read: SELECT * FROM accounts ORDER BY accountid;
accountid|balance|balance2
---------+-------+--------
checking |   1050|    2100
savings  |    600|    1200
(2 rows)


starting permutation: wx2 lockwithvalues c2 c1 read
step wx2: UPDATE accounts SET balance = balance + 450 WHERE accountid = 'checking' RETURNING balance;
balance
-------
   1050
(1 row)

step lockwithvalues: 
	-- Reference rowmark column that differs in type from targetlist at some attno.
	-- See CAHU7rYZo_C4ULsAx_LAj8az9zqgrD8WDd4hTegDTMM1LMqrBsg@mail.gmail.com
	SELECT a1.*, v.id FROM accounts a1, (values('checking'::text, 'nan'::text),('savings', 'nan')) v(id, notnumeric)
	WHERE a1.accountid = v.id AND v.notnumeric != 'einszwei'
	  FOR UPDATE OF a1;
 <waiting ...>
step c2: COMMIT;
step lockwithvalues: <... completed>
accountid|balance|balance2|id      
---------+-------+--------+--------
checking |   1050|    2100|checking
savings  |    600|    1200|savings 
(2 rows)

step c1: COMMIT;
step read: SELECT * FROM accounts ORDER BY accountid;
accountid|balance|balance2
---------+-------+--------
checking |   1050|    2100
savings  |    600|    1200
(2 rows)


starting permutation: wx2_ext partiallock_ext c2 c1 read_ext
step wx2_ext: UPDATE accounts_ext SET balance = balance + 450;
step partiallock_ext: 
	SELECT * FROM accounts_ext a1, accounts_ext a2
	  WHERE a1.accountid = a2.accountid
	  FOR UPDATE OF a1;
 <waiting ...>
step c2: COMMIT;
step partiallock_ext: <... completed>
accountid|balance|other|newcol|newcol2|accountid|balance|other|newcol|newcol2
---------+-------+-----+------+-------+---------+-------+-----+------+-------
checking |   1050|other|    42|       |checking |    600|other|    42|       
savings  |   1150|     |    42|       |savings  |    700|     |    42|       
(2 rows)

step c1: COMMIT;
step read_ext: SELECT * FROM accounts_ext ORDER BY accountid;
accountid|balance|other|newcol|newcol2
---------+-------+-----+------+-------
checking |   1050|other|    42|       
savings  |   1150|     |    42|       
(2 rows)


starting permutation: updateforss readforss c1 c2
step updateforss: 
	UPDATE table_a SET value = 'newTableAValue' WHERE id = 1;
	UPDATE table_b SET value = 'newTableBValue' WHERE id = 1;

step readforss: 
	SELECT ta.id AS ta_id, ta.value AS ta_value,
		(SELECT ROW(tb.id, tb.value)
		 FROM table_b tb WHERE ta.id = tb.id) AS tb_row
	FROM table_a ta
	WHERE ta.id = 1 FOR UPDATE OF ta;
 <waiting ...>
step c1: COMMIT;
step readforss: <... completed>
ta_id|ta_value      |tb_row         
-----+--------------+---------------
    1|newTableAValue|(1,tableBValue)
(1 row)

step c2: COMMIT;

starting permutation: updateforcip updateforcip2 c1 c2 read_a
step updateforcip: 
	UPDATE table_a SET value = NULL WHERE id = 1;

step updateforcip2: 
	UPDATE table_a SET value = COALESCE(value, (SELECT text 'newValue')) WHERE id = 1;
 <waiting ...>
step c1: COMMIT;
step updateforcip2: <... completed>
step c2: COMMIT;
step read_a: SELECT * FROM table_a ORDER BY id;
id|value   
--+--------
 1|newValue
(1 row)


starting permutation: updateforcip updateforcip3 c1 c2 read_a
step updateforcip: 
	UPDATE table_a SET value = NULL WHERE id = 1;

step updateforcip3: 
	WITH d(val) AS (SELECT text 'newValue' FROM generate_series(1,1))
	UPDATE table_a SET value = COALESCE(value, (SELECT val FROM d)) WHERE id = 1;
 <waiting ...>
step c1: COMMIT;
step updateforcip3: <... completed>
step c2: COMMIT;
step read_a: SELECT * FROM table_a ORDER BY id;
id|value   
--+--------
 1|newValue
(1 row)


starting permutation: wrtwcte readwcte c1 c2
step wrtwcte: UPDATE table_a SET value = 'tableAValue2' WHERE id = 1;
step readwcte: 
	WITH
	    cte1 AS (
	      SELECT id FROM table_b WHERE value = 'tableBValue'
	    ),
	    cte2 AS (
	      SELECT * FROM table_a
	      WHERE id = (SELECT id FROM cte1)
	      FOR UPDATE
	    )
	SELECT * FROM cte2;
 <waiting ...>
step c1: COMMIT;
step c2: COMMIT;
step readwcte: <... completed>
id|value       
--+------------
 1|tableAValue2
(1 row)


starting permutation: wrjt selectjoinforupdate c2 c1
step wrjt: UPDATE jointest SET data = 42 WHERE id = 7;
step selectjoinforupdate: 
	set local enable_nestloop to 0;
	set local enable_hashjoin to 0;
	set local enable_seqscan to 0;
	explain (costs off)
	select * from jointest a join jointest b on a.id=b.id for update;
	select * from jointest a join jointest b on a.id=b.id for update;
 <waiting ...>
step c2: COMMIT;
step selectjoinforupdate: <... completed>
QUERY PLAN                                                
----------------------------------------------------------
LockRows                                                  
  ->  Merge Join                                          
        Merge Cond: (a.id = b.id)                         
        ->  Index Scan using jointest_id_idx on jointest a
        ->  Index Scan using jointest_id_idx on jointest b
(5 rows)

id|data|id|data
--+----+--+----
 1|   0| 1|   0
 2|   0| 2|   0
 3|   0| 3|   0
 4|   0| 4|   0
 5|   0| 5|   0
 6|   0| 6|   0
 7|  42| 7|  42
 8|   0| 8|   0
 9|   0| 9|   0
10|   0|10|   0
(10 rows)

step c1: COMMIT;

starting permutation: wrjt selectresultforupdate c2 c1
step wrjt: UPDATE jointest SET data = 42 WHERE id = 7;
step selectresultforupdate: 
	select * from (select 1 as x) ss1 join (select 7 as y) ss2 on true
	  left join table_a a on a.id = x, jointest jt
	  where jt.id = y;
	explain (verbose, costs off)
	select * from (select 1 as x) ss1 join (select 7 as y) ss2 on true
	  left join table_a a on a.id = x, jointest jt
	  where jt.id = y for update of jt, ss1, ss2;
	select * from (select 1 as x) ss1 join (select 7 as y) ss2 on true
	  left join table_a a on a.id = x, jointest jt
	  where jt.id = y for update of jt, ss1, ss2;
 <waiting ...>
step c2: COMMIT;
step selectresultforupdate: <... completed>
x|y|id|value      |id|data
-+-+--+-----------+--+----
1|7| 1|tableAValue| 7|   0
(1 row)

QUERY PLAN                                                          
--------------------------------------------------------------------
LockRows                                                            
  Output: 1, 7, a.id, a.value, jt.id, jt.data, jt.ctid, a.ctid      
  ->  Nested Loop Left Join                                         
        Output: 1, 7, a.id, a.value, jt.id, jt.data, jt.ctid, a.ctid
        ->  Nested Loop                                             
              Output: jt.id, jt.data, jt.ctid                       
              ->  Seq Scan on public.jointest jt                    
                    Output: jt.id, jt.data, jt.ctid                 
                    Filter: (jt.id = 7)                             
              ->  Result                                            
        ->  Seq Scan on public.table_a a                            
              Output: a.id, a.value, a.ctid                         
              Filter: (a.id = 1)                                    
(13 rows)

x|y|id|value      |id|data
-+-+--+-----------+--+----
1|7| 1|tableAValue| 7|  42
(1 row)

step c1: COMMIT;

starting permutation: wrtwcte multireadwcte c1 c2
step wrtwcte: UPDATE table_a SET value = 'tableAValue2' WHERE id = 1;
step multireadwcte: 
	WITH updated AS (
	  UPDATE table_a SET value = 'tableAValue3' WHERE id = 1 RETURNING id
	)
	SELECT (SELECT id FROM updated) AS subid, * FROM updated;
 <waiting ...>
step c1: COMMIT;
step c2: COMMIT;
step multireadwcte: <... completed>
subid|id
-----+--
    1| 1
(1 row)


starting permutation: simplepartupdate conditionalpartupdate c1 c2 read_part
step simplepartupdate: 
	update parttbl set b = b + 10;

step conditionalpartupdate: 
	update parttbl set c = -c where b < 10;
 <waiting ...>
step c1: COMMIT;
step conditionalpartupdate: <... completed>
step c2: COMMIT;
step read_part: SELECT * FROM parttbl ORDER BY a, c;
a| b|c|   d
-+--+-+----
1|11|1|  12
2|12|2|1014
(2 rows)


starting permutation: simplepartupdate complexpartupdate c1 c2 read_part
step simplepartupdate: 
	update parttbl set b = b + 10;

step complexpartupdate: 
	with u as (update parttbl set b = b + 1 returning parttbl.*)
	update parttbl p set b = u.b + 100 from u where p.a = u.a;
 <waiting ...>
step c1: COMMIT;
step complexpartupdate: <... completed>
step c2: COMMIT;
step read_part: SELECT * FROM parttbl ORDER BY a, c;
a| b|c|   d
-+--+-+----
1|12|1|  13
2|13|2|1015
(2 rows)


starting permutation: simplepartupdate_route1to2 complexpartupdate_route_err1 c1 c2 read_part
step simplepartupdate_route1to2: 
	update parttbl set a = 2 where c = 1 returning *;

a|b|c|   d
-+-+-+----
2|1|1|1003
(1 row)

step complexpartupdate_route_err1: 
	with u as (update another_parttbl set a = 1 returning another_parttbl.*)
	update parttbl p set a = u.a from u where p.a = u.a and p.c = 1 returning p.*;
 <waiting ...>
step c1: COMMIT;
step complexpartupdate_route_err1: <... completed>
ERROR:  tuple to be locked was already moved to another partition due to concurrent update
step c2: COMMIT;
step read_part: SELECT * FROM parttbl ORDER BY a, c;
a|b|c|   d
-+-+-+----
2|1|1|1003
2|2|2|1004
(2 rows)


starting permutation: simplepartupdate_noroute complexpartupdate_route c1 c2 read_part
step simplepartupdate_noroute: 
	update parttbl set b = 2 where c = 1 returning *;

a|b|c|d
-+-+-+-
1|2|1|3
(1 row)

step complexpartupdate_route: 
	with u as (update another_parttbl set a = 1 returning another_parttbl.*)
	update parttbl p set a = p.b from u where p.a = u.a and p.c = 1 returning p.*;
 <waiting ...>
step c1: COMMIT;
step complexpartupdate_route: <... completed>
a|b|c|   d
-+-+-+----
2|2|1|1004
(1 row)

step c2: COMMIT;
step read_part: SELECT * FROM parttbl ORDER BY a, c;
a|b|c|   d
-+-+-+----
2|2|1|1004
2|2|2|1004
(2 rows)


starting permutation: simplepartupdate_noroute complexpartupdate_doesnt_route c1 c2 read_part
step simplepartupdate_noroute: 
	update parttbl set b = 2 where c = 1 returning *;

a|b|c|d
-+-+-+-
1|2|1|3
(1 row)

step complexpartupdate_doesnt_route: 
	with u as (update another_parttbl set a = 1 returning another_parttbl.*)
	update parttbl p set a = 3 - p.b from u where p.a = u.a and p.c = 1 returning p.*;
 <waiting ...>
step c1: COMMIT;
step complexpartupdate_doesnt_route: <... completed>
a|b|c|d
-+-+-+-
1|2|1|3
(1 row)

step c2: COMMIT;
step read_part: SELECT * FROM parttbl ORDER BY a, c;
a|b|c|   d
-+-+-+----
1|2|1|   3
2|2|2|1004
(2 rows)