summaryrefslogtreecommitdiffstats
path: root/src/test/regress/expected/fast_default.out
blob: 91f25717b5a5b064ec9ceb01c6743100cf38930c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
--
-- ALTER TABLE ADD COLUMN DEFAULT test
--
SET search_path = fast_default;
CREATE SCHEMA fast_default;
CREATE TABLE m(id OID);
INSERT INTO m VALUES (NULL::OID);
CREATE FUNCTION set(tabname name) RETURNS VOID
AS $$
BEGIN
  UPDATE m
  SET id = (SELECT c.relfilenode
            FROM pg_class AS c, pg_namespace AS s
            WHERE c.relname = tabname
                AND c.relnamespace = s.oid
                AND s.nspname = 'fast_default');
END;
$$ LANGUAGE 'plpgsql';
CREATE FUNCTION comp() RETURNS TEXT
AS $$
BEGIN
  RETURN (SELECT CASE
               WHEN m.id = c.relfilenode THEN 'Unchanged'
               ELSE 'Rewritten'
               END
           FROM m, pg_class AS c, pg_namespace AS s
           WHERE c.relname = 't'
               AND c.relnamespace = s.oid
               AND s.nspname = 'fast_default');
END;
$$ LANGUAGE 'plpgsql';
CREATE FUNCTION log_rewrite() RETURNS event_trigger
LANGUAGE plpgsql as
$func$

declare
   this_schema text;
begin
    select into this_schema relnamespace::regnamespace::text
    from pg_class
    where oid = pg_event_trigger_table_rewrite_oid();
    if this_schema = 'fast_default'
    then
        RAISE NOTICE 'rewriting table % for reason %',
          pg_event_trigger_table_rewrite_oid()::regclass,
          pg_event_trigger_table_rewrite_reason();
    end if;
end;
$func$;
CREATE TABLE has_volatile AS
SELECT * FROM generate_series(1,10) id;
CREATE EVENT TRIGGER has_volatile_rewrite
                  ON table_rewrite
   EXECUTE PROCEDURE log_rewrite();
-- only the last of these should trigger a rewrite
ALTER TABLE has_volatile ADD col1 int;
ALTER TABLE has_volatile ADD col2 int DEFAULT 1;
ALTER TABLE has_volatile ADD col3 timestamptz DEFAULT current_timestamp;
ALTER TABLE has_volatile ADD col4 int DEFAULT (random() * 10000)::int;
NOTICE:  rewriting table has_volatile for reason 2
-- Test a large sample of different datatypes
CREATE TABLE T(pk INT NOT NULL PRIMARY KEY, c_int INT DEFAULT 1);
SELECT set('t');
 set 
-----
 
(1 row)

INSERT INTO T VALUES (1), (2);
ALTER TABLE T ADD COLUMN c_bpchar BPCHAR(5) DEFAULT 'hello',
              ALTER COLUMN c_int SET DEFAULT 2;
INSERT INTO T VALUES (3), (4);
ALTER TABLE T ADD COLUMN c_text TEXT  DEFAULT 'world',
              ALTER COLUMN c_bpchar SET DEFAULT 'dog';
INSERT INTO T VALUES (5), (6);
ALTER TABLE T ADD COLUMN c_date DATE DEFAULT '2016-06-02',
              ALTER COLUMN c_text SET DEFAULT 'cat';
INSERT INTO T VALUES (7), (8);
ALTER TABLE T ADD COLUMN c_timestamp TIMESTAMP DEFAULT '2016-09-01 12:00:00',
              ADD COLUMN c_timestamp_null TIMESTAMP,
              ALTER COLUMN c_date SET DEFAULT '2010-01-01';
INSERT INTO T VALUES (9), (10);
ALTER TABLE T ADD COLUMN c_array TEXT[]
                  DEFAULT '{"This", "is", "the", "real", "world"}',
              ALTER COLUMN c_timestamp SET DEFAULT '1970-12-31 11:12:13',
              ALTER COLUMN c_timestamp_null SET DEFAULT '2016-09-29 12:00:00';
INSERT INTO T VALUES (11), (12);
ALTER TABLE T ADD COLUMN c_small SMALLINT DEFAULT -5,
              ADD COLUMN c_small_null SMALLINT,
              ALTER COLUMN c_array
                  SET DEFAULT '{"This", "is", "no", "fantasy"}';
INSERT INTO T VALUES (13), (14);
ALTER TABLE T ADD COLUMN c_big BIGINT DEFAULT 180000000000018,
              ALTER COLUMN c_small SET DEFAULT 9,
              ALTER COLUMN c_small_null SET DEFAULT 13;
INSERT INTO T VALUES (15), (16);
ALTER TABLE T ADD COLUMN c_num NUMERIC DEFAULT 1.00000000001,
              ALTER COLUMN c_big SET DEFAULT -9999999999999999;
INSERT INTO T VALUES (17), (18);
ALTER TABLE T ADD COLUMN c_time TIME DEFAULT '12:00:00',
              ALTER COLUMN c_num SET DEFAULT 2.000000000000002;
INSERT INTO T VALUES (19), (20);
ALTER TABLE T ADD COLUMN c_interval INTERVAL DEFAULT '1 day',
              ALTER COLUMN c_time SET DEFAULT '23:59:59';
INSERT INTO T VALUES (21), (22);
ALTER TABLE T ADD COLUMN c_hugetext TEXT DEFAULT repeat('abcdefg',1000),
              ALTER COLUMN c_interval SET DEFAULT '3 hours';
INSERT INTO T VALUES (23), (24);
ALTER TABLE T ALTER COLUMN c_interval DROP DEFAULT,
              ALTER COLUMN c_hugetext SET DEFAULT repeat('poiuyt', 1000);
INSERT INTO T VALUES (25), (26);
ALTER TABLE T ALTER COLUMN c_bpchar    DROP DEFAULT,
              ALTER COLUMN c_date      DROP DEFAULT,
              ALTER COLUMN c_text      DROP DEFAULT,
              ALTER COLUMN c_timestamp DROP DEFAULT,
              ALTER COLUMN c_array     DROP DEFAULT,
              ALTER COLUMN c_small     DROP DEFAULT,
              ALTER COLUMN c_big       DROP DEFAULT,
              ALTER COLUMN c_num       DROP DEFAULT,
              ALTER COLUMN c_time      DROP DEFAULT,
              ALTER COLUMN c_hugetext  DROP DEFAULT;
INSERT INTO T VALUES (27), (28);
SELECT pk, c_int, c_bpchar, c_text, c_date, c_timestamp,
       c_timestamp_null, c_array, c_small, c_small_null,
       c_big, c_num, c_time, c_interval,
       c_hugetext = repeat('abcdefg',1000) as c_hugetext_origdef,
       c_hugetext = repeat('poiuyt', 1000) as c_hugetext_newdef
FROM T ORDER BY pk;
 pk | c_int | c_bpchar | c_text |   c_date   |       c_timestamp        |     c_timestamp_null     |         c_array          | c_small | c_small_null |       c_big       |       c_num       |  c_time  | c_interval | c_hugetext_origdef | c_hugetext_newdef 
----+-------+----------+--------+------------+--------------------------+--------------------------+--------------------------+---------+--------------+-------------------+-------------------+----------+------------+--------------------+-------------------
  1 |     1 | hello    | world  | 06-02-2016 | Thu Sep 01 12:00:00 2016 |                          | {This,is,the,real,world} |      -5 |              |   180000000000018 |     1.00000000001 | 12:00:00 | @ 1 day    | t                  | f
  2 |     1 | hello    | world  | 06-02-2016 | Thu Sep 01 12:00:00 2016 |                          | {This,is,the,real,world} |      -5 |              |   180000000000018 |     1.00000000001 | 12:00:00 | @ 1 day    | t                  | f
  3 |     2 | hello    | world  | 06-02-2016 | Thu Sep 01 12:00:00 2016 |                          | {This,is,the,real,world} |      -5 |              |   180000000000018 |     1.00000000001 | 12:00:00 | @ 1 day    | t                  | f
  4 |     2 | hello    | world  | 06-02-2016 | Thu Sep 01 12:00:00 2016 |                          | {This,is,the,real,world} |      -5 |              |   180000000000018 |     1.00000000001 | 12:00:00 | @ 1 day    | t                  | f
  5 |     2 | dog      | world  | 06-02-2016 | Thu Sep 01 12:00:00 2016 |                          | {This,is,the,real,world} |      -5 |              |   180000000000018 |     1.00000000001 | 12:00:00 | @ 1 day    | t                  | f
  6 |     2 | dog      | world  | 06-02-2016 | Thu Sep 01 12:00:00 2016 |                          | {This,is,the,real,world} |      -5 |              |   180000000000018 |     1.00000000001 | 12:00:00 | @ 1 day    | t                  | f
  7 |     2 | dog      | cat    | 06-02-2016 | Thu Sep 01 12:00:00 2016 |                          | {This,is,the,real,world} |      -5 |              |   180000000000018 |     1.00000000001 | 12:00:00 | @ 1 day    | t                  | f
  8 |     2 | dog      | cat    | 06-02-2016 | Thu Sep 01 12:00:00 2016 |                          | {This,is,the,real,world} |      -5 |              |   180000000000018 |     1.00000000001 | 12:00:00 | @ 1 day    | t                  | f
  9 |     2 | dog      | cat    | 01-01-2010 | Thu Sep 01 12:00:00 2016 |                          | {This,is,the,real,world} |      -5 |              |   180000000000018 |     1.00000000001 | 12:00:00 | @ 1 day    | t                  | f
 10 |     2 | dog      | cat    | 01-01-2010 | Thu Sep 01 12:00:00 2016 |                          | {This,is,the,real,world} |      -5 |              |   180000000000018 |     1.00000000001 | 12:00:00 | @ 1 day    | t                  | f
 11 |     2 | dog      | cat    | 01-01-2010 | Thu Dec 31 11:12:13 1970 | Thu Sep 29 12:00:00 2016 | {This,is,the,real,world} |      -5 |              |   180000000000018 |     1.00000000001 | 12:00:00 | @ 1 day    | t                  | f
 12 |     2 | dog      | cat    | 01-01-2010 | Thu Dec 31 11:12:13 1970 | Thu Sep 29 12:00:00 2016 | {This,is,the,real,world} |      -5 |              |   180000000000018 |     1.00000000001 | 12:00:00 | @ 1 day    | t                  | f
 13 |     2 | dog      | cat    | 01-01-2010 | Thu Dec 31 11:12:13 1970 | Thu Sep 29 12:00:00 2016 | {This,is,no,fantasy}     |      -5 |              |   180000000000018 |     1.00000000001 | 12:00:00 | @ 1 day    | t                  | f
 14 |     2 | dog      | cat    | 01-01-2010 | Thu Dec 31 11:12:13 1970 | Thu Sep 29 12:00:00 2016 | {This,is,no,fantasy}     |      -5 |              |   180000000000018 |     1.00000000001 | 12:00:00 | @ 1 day    | t                  | f
 15 |     2 | dog      | cat    | 01-01-2010 | Thu Dec 31 11:12:13 1970 | Thu Sep 29 12:00:00 2016 | {This,is,no,fantasy}     |       9 |           13 |   180000000000018 |     1.00000000001 | 12:00:00 | @ 1 day    | t                  | f
 16 |     2 | dog      | cat    | 01-01-2010 | Thu Dec 31 11:12:13 1970 | Thu Sep 29 12:00:00 2016 | {This,is,no,fantasy}     |       9 |           13 |   180000000000018 |     1.00000000001 | 12:00:00 | @ 1 day    | t                  | f
 17 |     2 | dog      | cat    | 01-01-2010 | Thu Dec 31 11:12:13 1970 | Thu Sep 29 12:00:00 2016 | {This,is,no,fantasy}     |       9 |           13 | -9999999999999999 |     1.00000000001 | 12:00:00 | @ 1 day    | t                  | f
 18 |     2 | dog      | cat    | 01-01-2010 | Thu Dec 31 11:12:13 1970 | Thu Sep 29 12:00:00 2016 | {This,is,no,fantasy}     |       9 |           13 | -9999999999999999 |     1.00000000001 | 12:00:00 | @ 1 day    | t                  | f
 19 |     2 | dog      | cat    | 01-01-2010 | Thu Dec 31 11:12:13 1970 | Thu Sep 29 12:00:00 2016 | {This,is,no,fantasy}     |       9 |           13 | -9999999999999999 | 2.000000000000002 | 12:00:00 | @ 1 day    | t                  | f
 20 |     2 | dog      | cat    | 01-01-2010 | Thu Dec 31 11:12:13 1970 | Thu Sep 29 12:00:00 2016 | {This,is,no,fantasy}     |       9 |           13 | -9999999999999999 | 2.000000000000002 | 12:00:00 | @ 1 day    | t                  | f
 21 |     2 | dog      | cat    | 01-01-2010 | Thu Dec 31 11:12:13 1970 | Thu Sep 29 12:00:00 2016 | {This,is,no,fantasy}     |       9 |           13 | -9999999999999999 | 2.000000000000002 | 23:59:59 | @ 1 day    | t                  | f
 22 |     2 | dog      | cat    | 01-01-2010 | Thu Dec 31 11:12:13 1970 | Thu Sep 29 12:00:00 2016 | {This,is,no,fantasy}     |       9 |           13 | -9999999999999999 | 2.000000000000002 | 23:59:59 | @ 1 day    | t                  | f
 23 |     2 | dog      | cat    | 01-01-2010 | Thu Dec 31 11:12:13 1970 | Thu Sep 29 12:00:00 2016 | {This,is,no,fantasy}     |       9 |           13 | -9999999999999999 | 2.000000000000002 | 23:59:59 | @ 3 hours  | t                  | f
 24 |     2 | dog      | cat    | 01-01-2010 | Thu Dec 31 11:12:13 1970 | Thu Sep 29 12:00:00 2016 | {This,is,no,fantasy}     |       9 |           13 | -9999999999999999 | 2.000000000000002 | 23:59:59 | @ 3 hours  | t                  | f
 25 |     2 | dog      | cat    | 01-01-2010 | Thu Dec 31 11:12:13 1970 | Thu Sep 29 12:00:00 2016 | {This,is,no,fantasy}     |       9 |           13 | -9999999999999999 | 2.000000000000002 | 23:59:59 |            | f                  | t
 26 |     2 | dog      | cat    | 01-01-2010 | Thu Dec 31 11:12:13 1970 | Thu Sep 29 12:00:00 2016 | {This,is,no,fantasy}     |       9 |           13 | -9999999999999999 | 2.000000000000002 | 23:59:59 |            | f                  | t
 27 |     2 |          |        |            |                          | Thu Sep 29 12:00:00 2016 |                          |         |           13 |                   |                   |          |            |                    | 
 28 |     2 |          |        |            |                          | Thu Sep 29 12:00:00 2016 |                          |         |           13 |                   |                   |          |            |                    | 
(28 rows)

SELECT comp();
   comp    
-----------
 Unchanged
(1 row)

DROP TABLE T;
-- Test expressions in the defaults
CREATE OR REPLACE FUNCTION foo(a INT) RETURNS TEXT AS $$
DECLARE res TEXT := '';
        i INT;
BEGIN
  i := 0;
  WHILE (i < a) LOOP
    res := res || chr(ascii('a') + i);
    i := i + 1;
  END LOOP;
  RETURN res;
END; $$ LANGUAGE PLPGSQL STABLE;
CREATE TABLE T(pk INT NOT NULL PRIMARY KEY, c_int INT DEFAULT LENGTH(foo(6)));
SELECT set('t');
 set 
-----
 
(1 row)

INSERT INTO T VALUES (1), (2);
ALTER TABLE T ADD COLUMN c_bpchar BPCHAR(5) DEFAULT foo(4),
              ALTER COLUMN c_int SET DEFAULT LENGTH(foo(8));
INSERT INTO T VALUES (3), (4);
ALTER TABLE T ADD COLUMN c_text TEXT  DEFAULT foo(6),
              ALTER COLUMN c_bpchar SET DEFAULT foo(3);
INSERT INTO T VALUES (5), (6);
ALTER TABLE T ADD COLUMN c_date DATE
                  DEFAULT '2016-06-02'::DATE  + LENGTH(foo(10)),
              ALTER COLUMN c_text SET DEFAULT foo(12);
INSERT INTO T VALUES (7), (8);
ALTER TABLE T ADD COLUMN c_timestamp TIMESTAMP
                  DEFAULT '2016-09-01'::DATE + LENGTH(foo(10)),
              ALTER COLUMN c_date
                  SET DEFAULT '2010-01-01'::DATE - LENGTH(foo(4));
INSERT INTO T VALUES (9), (10);
ALTER TABLE T ADD COLUMN c_array TEXT[]
                  DEFAULT ('{"This", "is", "' || foo(4) ||
                           '","the", "real", "world"}')::TEXT[],
              ALTER COLUMN c_timestamp
                  SET DEFAULT '1970-12-31'::DATE + LENGTH(foo(30));
INSERT INTO T VALUES (11), (12);
ALTER TABLE T ALTER COLUMN c_int DROP DEFAULT,
              ALTER COLUMN c_array
                  SET DEFAULT ('{"This", "is", "' || foo(1) ||
                               '", "fantasy"}')::text[];
INSERT INTO T VALUES (13), (14);
ALTER TABLE T ALTER COLUMN c_bpchar    DROP DEFAULT,
              ALTER COLUMN c_date      DROP DEFAULT,
              ALTER COLUMN c_text      DROP DEFAULT,
              ALTER COLUMN c_timestamp DROP DEFAULT,
              ALTER COLUMN c_array     DROP DEFAULT;
INSERT INTO T VALUES (15), (16);
SELECT * FROM T;
 pk | c_int | c_bpchar |    c_text    |   c_date   |       c_timestamp        |            c_array            
----+-------+----------+--------------+------------+--------------------------+-------------------------------
  1 |     6 | abcd     | abcdef       | 06-12-2016 | Sun Sep 11 00:00:00 2016 | {This,is,abcd,the,real,world}
  2 |     6 | abcd     | abcdef       | 06-12-2016 | Sun Sep 11 00:00:00 2016 | {This,is,abcd,the,real,world}
  3 |     8 | abcd     | abcdef       | 06-12-2016 | Sun Sep 11 00:00:00 2016 | {This,is,abcd,the,real,world}
  4 |     8 | abcd     | abcdef       | 06-12-2016 | Sun Sep 11 00:00:00 2016 | {This,is,abcd,the,real,world}
  5 |     8 | abc      | abcdef       | 06-12-2016 | Sun Sep 11 00:00:00 2016 | {This,is,abcd,the,real,world}
  6 |     8 | abc      | abcdef       | 06-12-2016 | Sun Sep 11 00:00:00 2016 | {This,is,abcd,the,real,world}
  7 |     8 | abc      | abcdefghijkl | 06-12-2016 | Sun Sep 11 00:00:00 2016 | {This,is,abcd,the,real,world}
  8 |     8 | abc      | abcdefghijkl | 06-12-2016 | Sun Sep 11 00:00:00 2016 | {This,is,abcd,the,real,world}
  9 |     8 | abc      | abcdefghijkl | 12-28-2009 | Sun Sep 11 00:00:00 2016 | {This,is,abcd,the,real,world}
 10 |     8 | abc      | abcdefghijkl | 12-28-2009 | Sun Sep 11 00:00:00 2016 | {This,is,abcd,the,real,world}
 11 |     8 | abc      | abcdefghijkl | 12-28-2009 | Sat Jan 30 00:00:00 1971 | {This,is,abcd,the,real,world}
 12 |     8 | abc      | abcdefghijkl | 12-28-2009 | Sat Jan 30 00:00:00 1971 | {This,is,abcd,the,real,world}
 13 |       | abc      | abcdefghijkl | 12-28-2009 | Sat Jan 30 00:00:00 1971 | {This,is,a,fantasy}
 14 |       | abc      | abcdefghijkl | 12-28-2009 | Sat Jan 30 00:00:00 1971 | {This,is,a,fantasy}
 15 |       |          |              |            |                          | 
 16 |       |          |              |            |                          | 
(16 rows)

SELECT comp();
   comp    
-----------
 Unchanged
(1 row)

DROP TABLE T;
DROP FUNCTION foo(INT);
-- Fall back to full rewrite for volatile expressions
CREATE TABLE T(pk INT NOT NULL PRIMARY KEY);
INSERT INTO T VALUES (1);
SELECT set('t');
 set 
-----
 
(1 row)

-- now() is stable, because it returns the transaction timestamp
ALTER TABLE T ADD COLUMN c1 TIMESTAMP DEFAULT now();
SELECT comp();
   comp    
-----------
 Unchanged
(1 row)

-- clock_timestamp() is volatile
ALTER TABLE T ADD COLUMN c2 TIMESTAMP DEFAULT clock_timestamp();
NOTICE:  rewriting table t for reason 2
SELECT comp();
   comp    
-----------
 Rewritten
(1 row)

DROP TABLE T;
-- Simple querie
CREATE TABLE T (pk INT NOT NULL PRIMARY KEY);
SELECT set('t');
 set 
-----
 
(1 row)

INSERT INTO T SELECT * FROM generate_series(1, 10) a;
ALTER TABLE T ADD COLUMN c_bigint BIGINT NOT NULL DEFAULT -1;
INSERT INTO T SELECT b, b - 10 FROM generate_series(11, 20) a(b);
ALTER TABLE T ADD COLUMN c_text TEXT DEFAULT 'hello';
INSERT INTO T SELECT b, b - 10, (b + 10)::text FROM generate_series(21, 30) a(b);
-- WHERE clause
SELECT c_bigint, c_text FROM T WHERE c_bigint = -1 LIMIT 1;
 c_bigint | c_text 
----------+--------
       -1 | hello
(1 row)

EXPLAIN (VERBOSE TRUE, COSTS FALSE)
SELECT c_bigint, c_text FROM T WHERE c_bigint = -1 LIMIT 1;
                  QUERY PLAN                  
----------------------------------------------
 Limit
   Output: c_bigint, c_text
   ->  Seq Scan on fast_default.t
         Output: c_bigint, c_text
         Filter: (t.c_bigint = '-1'::integer)
(5 rows)

SELECT c_bigint, c_text FROM T WHERE c_text = 'hello' LIMIT 1;
 c_bigint | c_text 
----------+--------
       -1 | hello
(1 row)

EXPLAIN (VERBOSE TRUE, COSTS FALSE) SELECT c_bigint, c_text FROM T WHERE c_text = 'hello' LIMIT 1;
                 QUERY PLAN                 
--------------------------------------------
 Limit
   Output: c_bigint, c_text
   ->  Seq Scan on fast_default.t
         Output: c_bigint, c_text
         Filter: (t.c_text = 'hello'::text)
(5 rows)

-- COALESCE
SELECT COALESCE(c_bigint, pk), COALESCE(c_text, pk::text)
FROM T
ORDER BY pk LIMIT 10;
 coalesce | coalesce 
----------+----------
       -1 | hello
       -1 | hello
       -1 | hello
       -1 | hello
       -1 | hello
       -1 | hello
       -1 | hello
       -1 | hello
       -1 | hello
       -1 | hello
(10 rows)

-- Aggregate function
SELECT SUM(c_bigint), MAX(c_text COLLATE "C" ), MIN(c_text COLLATE "C") FROM T;
 sum |  max  | min 
-----+-------+-----
 200 | hello | 31
(1 row)

-- ORDER BY
SELECT * FROM T ORDER BY c_bigint, c_text, pk LIMIT 10;
 pk | c_bigint | c_text 
----+----------+--------
  1 |       -1 | hello
  2 |       -1 | hello
  3 |       -1 | hello
  4 |       -1 | hello
  5 |       -1 | hello
  6 |       -1 | hello
  7 |       -1 | hello
  8 |       -1 | hello
  9 |       -1 | hello
 10 |       -1 | hello
(10 rows)

EXPLAIN (VERBOSE TRUE, COSTS FALSE)
SELECT * FROM T ORDER BY c_bigint, c_text, pk LIMIT 10;
                  QUERY PLAN                  
----------------------------------------------
 Limit
   Output: pk, c_bigint, c_text
   ->  Sort
         Output: pk, c_bigint, c_text
         Sort Key: t.c_bigint, t.c_text, t.pk
         ->  Seq Scan on fast_default.t
               Output: pk, c_bigint, c_text
(7 rows)

-- LIMIT
SELECT * FROM T WHERE c_bigint > -1 ORDER BY c_bigint, c_text, pk LIMIT 10;
 pk | c_bigint | c_text 
----+----------+--------
 11 |        1 | hello
 12 |        2 | hello
 13 |        3 | hello
 14 |        4 | hello
 15 |        5 | hello
 16 |        6 | hello
 17 |        7 | hello
 18 |        8 | hello
 19 |        9 | hello
 20 |       10 | hello
(10 rows)

EXPLAIN (VERBOSE TRUE, COSTS FALSE)
SELECT * FROM T WHERE c_bigint > -1 ORDER BY c_bigint, c_text, pk LIMIT 10;
                     QUERY PLAN                     
----------------------------------------------------
 Limit
   Output: pk, c_bigint, c_text
   ->  Sort
         Output: pk, c_bigint, c_text
         Sort Key: t.c_bigint, t.c_text, t.pk
         ->  Seq Scan on fast_default.t
               Output: pk, c_bigint, c_text
               Filter: (t.c_bigint > '-1'::integer)
(8 rows)

--  DELETE with RETURNING
DELETE FROM T WHERE pk BETWEEN 10 AND 20 RETURNING *;
 pk | c_bigint | c_text 
----+----------+--------
 10 |       -1 | hello
 11 |        1 | hello
 12 |        2 | hello
 13 |        3 | hello
 14 |        4 | hello
 15 |        5 | hello
 16 |        6 | hello
 17 |        7 | hello
 18 |        8 | hello
 19 |        9 | hello
 20 |       10 | hello
(11 rows)

EXPLAIN (VERBOSE TRUE, COSTS FALSE)
DELETE FROM T WHERE pk BETWEEN 10 AND 20 RETURNING *;
                        QUERY PLAN                         
-----------------------------------------------------------
 Delete on fast_default.t
   Output: pk, c_bigint, c_text
   ->  Bitmap Heap Scan on fast_default.t
         Output: ctid
         Recheck Cond: ((t.pk >= 10) AND (t.pk <= 20))
         ->  Bitmap Index Scan on t_pkey
               Index Cond: ((t.pk >= 10) AND (t.pk <= 20))
(7 rows)

-- UPDATE
UPDATE T SET c_text = '"' || c_text || '"'  WHERE pk < 10;
SELECT * FROM T WHERE c_text LIKE '"%"' ORDER BY PK;
 pk | c_bigint | c_text  
----+----------+---------
  1 |       -1 | "hello"
  2 |       -1 | "hello"
  3 |       -1 | "hello"
  4 |       -1 | "hello"
  5 |       -1 | "hello"
  6 |       -1 | "hello"
  7 |       -1 | "hello"
  8 |       -1 | "hello"
  9 |       -1 | "hello"
(9 rows)

SELECT comp();
   comp    
-----------
 Unchanged
(1 row)

DROP TABLE T;
-- Combine with other DDL
CREATE TABLE T(pk INT NOT NULL PRIMARY KEY);
SELECT set('t');
 set 
-----
 
(1 row)

INSERT INTO T VALUES (1), (2);
ALTER TABLE T ADD COLUMN c_int INT NOT NULL DEFAULT -1;
INSERT INTO T VALUES (3), (4);
ALTER TABLE T ADD COLUMN c_text TEXT DEFAULT 'Hello';
INSERT INTO T VALUES (5), (6);
ALTER TABLE T ALTER COLUMN c_text SET DEFAULT 'world',
              ALTER COLUMN c_int  SET DEFAULT 1;
INSERT INTO T VALUES (7), (8);
SELECT * FROM T ORDER BY pk;
 pk | c_int | c_text 
----+-------+--------
  1 |    -1 | Hello
  2 |    -1 | Hello
  3 |    -1 | Hello
  4 |    -1 | Hello
  5 |    -1 | Hello
  6 |    -1 | Hello
  7 |     1 | world
  8 |     1 | world
(8 rows)

-- Add an index
CREATE INDEX i ON T(c_int, c_text);
SELECT c_text FROM T WHERE c_int = -1;
 c_text 
--------
 Hello
 Hello
 Hello
 Hello
 Hello
 Hello
(6 rows)

SELECT comp();
   comp    
-----------
 Unchanged
(1 row)

-- query to exercise expand_tuple function
CREATE TABLE t1 AS
SELECT 1::int AS a , 2::int AS b
FROM generate_series(1,20) q;
ALTER TABLE t1 ADD COLUMN c text;
SELECT a,
       stddev(cast((SELECT sum(1) FROM generate_series(1,20) x) AS float4))
          OVER (PARTITION BY a,b,c ORDER BY b)
       AS z
FROM t1;
 a | z 
---+---
 1 | 0
 1 | 0
 1 | 0
 1 | 0
 1 | 0
 1 | 0
 1 | 0
 1 | 0
 1 | 0
 1 | 0
 1 | 0
 1 | 0
 1 | 0
 1 | 0
 1 | 0
 1 | 0
 1 | 0
 1 | 0
 1 | 0
 1 | 0
(20 rows)

DROP TABLE T;
-- test that we account for missing columns without defaults correctly
-- in expand_tuple, and that rows are correctly expanded for triggers
CREATE FUNCTION test_trigger()
RETURNS trigger
LANGUAGE plpgsql
AS $$

begin
    raise notice 'old tuple: %', to_json(OLD)::text;
    if TG_OP = 'DELETE'
    then
       return OLD;
    else
       return NEW;
    end if;
end;

$$;
-- 2 new columns, both have defaults
CREATE TABLE t (id serial PRIMARY KEY, a int, b int, c int);
INSERT INTO t (a,b,c) VALUES (1,2,3);
ALTER TABLE t ADD COLUMN x int NOT NULL DEFAULT 4;
ALTER TABLE t ADD COLUMN y int NOT NULL DEFAULT 5;
CREATE TRIGGER a BEFORE UPDATE ON t FOR EACH ROW EXECUTE PROCEDURE test_trigger();
SELECT * FROM t;
 id | a | b | c | x | y 
----+---+---+---+---+---
  1 | 1 | 2 | 3 | 4 | 5
(1 row)

UPDATE t SET y = 2;
NOTICE:  old tuple: {"id":1,"a":1,"b":2,"c":3,"x":4,"y":5}
SELECT * FROM t;
 id | a | b | c | x | y 
----+---+---+---+---+---
  1 | 1 | 2 | 3 | 4 | 2
(1 row)

DROP TABLE t;
-- 2 new columns, first has default
CREATE TABLE t (id serial PRIMARY KEY, a int, b int, c int);
INSERT INTO t (a,b,c) VALUES (1,2,3);
ALTER TABLE t ADD COLUMN x int NOT NULL DEFAULT 4;
ALTER TABLE t ADD COLUMN y int;
CREATE TRIGGER a BEFORE UPDATE ON t FOR EACH ROW EXECUTE PROCEDURE test_trigger();
SELECT * FROM t;
 id | a | b | c | x | y 
----+---+---+---+---+---
  1 | 1 | 2 | 3 | 4 |  
(1 row)

UPDATE t SET y = 2;
NOTICE:  old tuple: {"id":1,"a":1,"b":2,"c":3,"x":4,"y":null}
SELECT * FROM t;
 id | a | b | c | x | y 
----+---+---+---+---+---
  1 | 1 | 2 | 3 | 4 | 2
(1 row)

DROP TABLE t;
-- 2 new columns, second has default
CREATE TABLE t (id serial PRIMARY KEY, a int, b int, c int);
INSERT INTO t (a,b,c) VALUES (1,2,3);
ALTER TABLE t ADD COLUMN x int;
ALTER TABLE t ADD COLUMN y int NOT NULL DEFAULT 5;
CREATE TRIGGER a BEFORE UPDATE ON t FOR EACH ROW EXECUTE PROCEDURE test_trigger();
SELECT * FROM t;
 id | a | b | c | x | y 
----+---+---+---+---+---
  1 | 1 | 2 | 3 |   | 5
(1 row)

UPDATE t SET y = 2;
NOTICE:  old tuple: {"id":1,"a":1,"b":2,"c":3,"x":null,"y":5}
SELECT * FROM t;
 id | a | b | c | x | y 
----+---+---+---+---+---
  1 | 1 | 2 | 3 |   | 2
(1 row)

DROP TABLE t;
-- 2 new columns, neither has default
CREATE TABLE t (id serial PRIMARY KEY, a int, b int, c int);
INSERT INTO t (a,b,c) VALUES (1,2,3);
ALTER TABLE t ADD COLUMN x int;
ALTER TABLE t ADD COLUMN y int;
CREATE TRIGGER a BEFORE UPDATE ON t FOR EACH ROW EXECUTE PROCEDURE test_trigger();
SELECT * FROM t;
 id | a | b | c | x | y 
----+---+---+---+---+---
  1 | 1 | 2 | 3 |   |  
(1 row)

UPDATE t SET y = 2;
NOTICE:  old tuple: {"id":1,"a":1,"b":2,"c":3,"x":null,"y":null}
SELECT * FROM t;
 id | a | b | c | x | y 
----+---+---+---+---+---
  1 | 1 | 2 | 3 |   | 2
(1 row)

DROP TABLE t;
-- same as last 4 tests but here the last original column has a NULL value
-- 2 new columns, both have defaults
CREATE TABLE t (id serial PRIMARY KEY, a int, b int, c int);
INSERT INTO t (a,b,c) VALUES (1,2,NULL);
ALTER TABLE t ADD COLUMN x int NOT NULL DEFAULT 4;
ALTER TABLE t ADD COLUMN y int NOT NULL DEFAULT 5;
CREATE TRIGGER a BEFORE UPDATE ON t FOR EACH ROW EXECUTE PROCEDURE test_trigger();
SELECT * FROM t;
 id | a | b | c | x | y 
----+---+---+---+---+---
  1 | 1 | 2 |   | 4 | 5
(1 row)

UPDATE t SET y = 2;
NOTICE:  old tuple: {"id":1,"a":1,"b":2,"c":null,"x":4,"y":5}
SELECT * FROM t;
 id | a | b | c | x | y 
----+---+---+---+---+---
  1 | 1 | 2 |   | 4 | 2
(1 row)

DROP TABLE t;
-- 2 new columns, first has default
CREATE TABLE t (id serial PRIMARY KEY, a int, b int, c int);
INSERT INTO t (a,b,c) VALUES (1,2,NULL);
ALTER TABLE t ADD COLUMN x int NOT NULL DEFAULT 4;
ALTER TABLE t ADD COLUMN y int;
CREATE TRIGGER a BEFORE UPDATE ON t FOR EACH ROW EXECUTE PROCEDURE test_trigger();
SELECT * FROM t;
 id | a | b | c | x | y 
----+---+---+---+---+---
  1 | 1 | 2 |   | 4 |  
(1 row)

UPDATE t SET y = 2;
NOTICE:  old tuple: {"id":1,"a":1,"b":2,"c":null,"x":4,"y":null}
SELECT * FROM t;
 id | a | b | c | x | y 
----+---+---+---+---+---
  1 | 1 | 2 |   | 4 | 2
(1 row)

DROP TABLE t;
-- 2 new columns, second has default
CREATE TABLE t (id serial PRIMARY KEY, a int, b int, c int);
INSERT INTO t (a,b,c) VALUES (1,2,NULL);
ALTER TABLE t ADD COLUMN x int;
ALTER TABLE t ADD COLUMN y int NOT NULL DEFAULT 5;
CREATE TRIGGER a BEFORE UPDATE ON t FOR EACH ROW EXECUTE PROCEDURE test_trigger();
SELECT * FROM t;
 id | a | b | c | x | y 
----+---+---+---+---+---
  1 | 1 | 2 |   |   | 5
(1 row)

UPDATE t SET y = 2;
NOTICE:  old tuple: {"id":1,"a":1,"b":2,"c":null,"x":null,"y":5}
SELECT * FROM t;
 id | a | b | c | x | y 
----+---+---+---+---+---
  1 | 1 | 2 |   |   | 2
(1 row)

DROP TABLE t;
-- 2 new columns, neither has default
CREATE TABLE t (id serial PRIMARY KEY, a int, b int, c int);
INSERT INTO t (a,b,c) VALUES (1,2,NULL);
ALTER TABLE t ADD COLUMN x int;
ALTER TABLE t ADD COLUMN y int;
CREATE TRIGGER a BEFORE UPDATE ON t FOR EACH ROW EXECUTE PROCEDURE test_trigger();
SELECT * FROM t;
 id | a | b | c | x | y 
----+---+---+---+---+---
  1 | 1 | 2 |   |   |  
(1 row)

UPDATE t SET y = 2;
NOTICE:  old tuple: {"id":1,"a":1,"b":2,"c":null,"x":null,"y":null}
SELECT * FROM t;
 id | a | b | c | x | y 
----+---+---+---+---+---
  1 | 1 | 2 |   |   | 2
(1 row)

DROP TABLE t;
-- make sure expanded tuple has correct self pointer
-- it will be required by the RI trigger doing the cascading delete
CREATE TABLE leader (a int PRIMARY KEY, b int);
CREATE TABLE follower (a int REFERENCES leader ON DELETE CASCADE, b int);
INSERT INTO leader VALUES (1, 1), (2, 2);
ALTER TABLE leader ADD c int;
ALTER TABLE leader DROP c;
DELETE FROM leader;
-- check that ALTER TABLE ... ALTER TYPE does the right thing
CREATE TABLE vtype( a integer);
INSERT INTO vtype VALUES (1);
ALTER TABLE vtype ADD COLUMN b DOUBLE PRECISION DEFAULT 0.2;
ALTER TABLE vtype ADD COLUMN c BOOLEAN DEFAULT true;
SELECT * FROM vtype;
 a |  b  | c 
---+-----+---
 1 | 0.2 | t
(1 row)

ALTER TABLE vtype
      ALTER b TYPE text USING b::text,
      ALTER c TYPE text USING c::text;
NOTICE:  rewriting table vtype for reason 4
SELECT * FROM vtype;
 a |  b  |  c   
---+-----+------
 1 | 0.2 | true
(1 row)

-- also check the case that doesn't rewrite the table
CREATE TABLE vtype2 (a int);
INSERT INTO vtype2 VALUES (1);
ALTER TABLE vtype2 ADD COLUMN b varchar(10) DEFAULT 'xxx';
ALTER TABLE vtype2 ALTER COLUMN b SET DEFAULT 'yyy';
INSERT INTO vtype2 VALUES (2);
ALTER TABLE vtype2 ALTER COLUMN b TYPE varchar(20) USING b::varchar(20);
SELECT * FROM vtype2;
 a |  b  
---+-----
 1 | xxx
 2 | yyy
(2 rows)

-- Ensure that defaults are checked when evaluating whether HOT update
-- is possible, this was broken for a while:
-- https://postgr.es/m/20190202133521.ylauh3ckqa7colzj%40alap3.anarazel.de
BEGIN;
CREATE TABLE t();
INSERT INTO t DEFAULT VALUES;
ALTER TABLE t ADD COLUMN a int DEFAULT 1;
CREATE INDEX ON t(a);
-- set column with a default 1 to NULL, due to a bug that wasn't
-- noticed has heap_getattr buggily returned NULL for default columns
UPDATE t SET a = NULL;
-- verify that index and non-index scans show the same result
SET LOCAL enable_seqscan = true;
SELECT * FROM t WHERE a IS NULL;
 a 
---
  
(1 row)

SET LOCAL enable_seqscan = false;
SELECT * FROM t WHERE a IS NULL;
 a 
---
  
(1 row)

ROLLBACK;
-- verify that a default set on a non-plain table doesn't set a missing
-- value on the attribute
CREATE FOREIGN DATA WRAPPER dummy;
CREATE SERVER s0 FOREIGN DATA WRAPPER dummy;
CREATE FOREIGN TABLE ft1 (c1 integer NOT NULL) SERVER s0;
ALTER FOREIGN TABLE ft1 ADD COLUMN c8 integer DEFAULT 0;
ALTER FOREIGN TABLE ft1 ALTER COLUMN c8 TYPE char(10);
SELECT count(*)
  FROM pg_attribute
  WHERE attrelid = 'ft1'::regclass AND
    (attmissingval IS NOT NULL OR atthasmissing);
 count 
-------
     0
(1 row)

-- cleanup
DROP FOREIGN TABLE ft1;
DROP SERVER s0;
DROP FOREIGN DATA WRAPPER dummy;
DROP TABLE vtype;
DROP TABLE vtype2;
DROP TABLE follower;
DROP TABLE leader;
DROP FUNCTION test_trigger();
DROP TABLE t1;
DROP FUNCTION set(name);
DROP FUNCTION comp();
DROP TABLE m;
DROP TABLE has_volatile;
DROP EVENT TRIGGER has_volatile_rewrite;
DROP FUNCTION log_rewrite;
DROP SCHEMA fast_default;
-- Leave a table with an active fast default in place, for pg_upgrade testing
set search_path = public;
create table has_fast_default(f1 int);
insert into has_fast_default values(1);
alter table has_fast_default add column f2 int default 42;
table has_fast_default;
 f1 | f2 
----+----
  1 | 42
(1 row)