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postgresql/contrib/test_decoding/expected/toast.out
Andres Freund c8f621c43a logical decoding: Fix handling of large old tuples with replica identity full. 
When decoding the old version of an UPDATE or DELETE change, and if that
tuple was bigger than MaxHeapTupleSize, we either Assert'ed out, or
failed in more subtle ways in non-assert builds.  Normally individual
tuples aren't bigger than MaxHeapTupleSize, with big datums toasted.
But that's not the case for the old version of a tuple for logical
decoding; the replica identity is logged as one piece. With the default
replica identity btree limits that to small tuples, but that's not the
case for FULL.

Change the tuple buffer infrastructure to separate allocate over-large
tuples, instead of always going through the slab cache.

This unfortunately requires changing the ReorderBufferTupleBuf
definition, we need to store the allocated size someplace. To avoid
requiring output plugins to recompile, don't store HeapTupleHeaderData
directly after HeapTupleData, but point to it via t_data; that leaves
rooms for the allocated size.  As there's no reason for an output plugin
to look at ReorderBufferTupleBuf->t_data.header, remove the field. It
was just a minor convenience having it directly accessible.

Reported-By: Adam Dratwiński
Discussion: CAKg6ypLd7773AOX4DiOGRwQk1TVOQKhNwjYiVjJnpq8Wo+i62Q@mail.gmail.com
2016-03-05 18:02:20 -08:00

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-- predictability
SET synchronous_commit = on;
DROP TABLE IF EXISTS xpto;
NOTICE: table "xpto" does not exist, skipping
SELECT 'init' FROM pg_create_logical_replication_slot('regression_slot', 'test_decoding');
?column?
----------
init
(1 row)
CREATE SEQUENCE xpto_rand_seq START 79 INCREMENT 1499; -- portable "random"
CREATE TABLE xpto (
id serial primary key,
toasted_col1 text,
rand1 float8 DEFAULT nextval('xpto_rand_seq'),
toasted_col2 text,
rand2 float8 DEFAULT nextval('xpto_rand_seq')
);
-- uncompressed external toast data
INSERT INTO xpto (toasted_col1, toasted_col2) SELECT string_agg(g.i::text, ''), string_agg((g.i*2)::text, '') FROM generate_series(1, 2000) g(i);
-- compressed external toast data
INSERT INTO xpto (toasted_col2) SELECT repeat(string_agg(to_char(g.i, 'FM0000'), ''), 50) FROM generate_series(1, 500) g(i);
-- update of existing column
UPDATE xpto SET toasted_col1 = (SELECT string_agg(g.i::text, '') FROM generate_series(1, 2000) g(i)) WHERE id = 1;
UPDATE xpto SET rand1 = 123.456 WHERE id = 1;
-- updating external via INSERT ... ON CONFLICT DO UPDATE
INSERT INTO xpto(id, toasted_col2) VALUES (2, 'toasted2-upsert')
ON CONFLICT (id)
DO UPDATE SET toasted_col2 = EXCLUDED.toasted_col2 || xpto.toasted_col2;
DELETE FROM xpto WHERE id = 1;
DROP TABLE IF EXISTS toasted_key;
NOTICE: table "toasted_key" does not exist, skipping
CREATE TABLE toasted_key (
id serial,
toasted_key text PRIMARY KEY,
toasted_col1 text,
toasted_col2 text
);
ALTER TABLE toasted_key ALTER COLUMN toasted_key SET STORAGE EXTERNAL;
ALTER TABLE toasted_key ALTER COLUMN toasted_col1 SET STORAGE EXTERNAL;
INSERT INTO toasted_key(toasted_key, toasted_col1) VALUES(repeat('1234567890', 200), repeat('9876543210', 200));
-- test update of a toasted key without changing it
UPDATE toasted_key SET toasted_col2 = toasted_col1;
-- test update of a toasted key, changing it
UPDATE toasted_key SET toasted_key = toasted_key || '1';
DELETE FROM toasted_key;
-- Test that HEAP2_MULTI_INSERT insertions with and without toasted
-- columns are handled correctly
CREATE TABLE toasted_copy (
id int primary key, -- no default, copy didn't use to handle that with multi inserts
data text
);
ALTER TABLE toasted_copy ALTER COLUMN data SET STORAGE EXTERNAL;
\copy toasted_copy FROM STDIN
SELECT substr(data, 1, 200) FROM pg_logical_slot_get_changes('regression_slot', NULL, NULL, 'include-xids', '0', 'skip-empty-xacts', '1');
substr
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
BEGIN
table public.xpto: INSERT: id[integer]:1 toasted_col1[text]:'1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374
COMMIT
BEGIN
table public.xpto: INSERT: id[integer]:2 toasted_col1[text]:null rand1[double precision]:3077 toasted_col2[text]:'00010002000300040005000600070008000900100011001200130014001500160017001800190020002100
COMMIT
BEGIN
table public.xpto: UPDATE: id[integer]:1 toasted_col1[text]:'1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374
COMMIT
BEGIN
table public.xpto: UPDATE: id[integer]:1 toasted_col1[text]:unchanged-toast-datum rand1[double precision]:123.456 toasted_col2[text]:unchanged-toast-datum rand2[double precision]:1578
COMMIT
BEGIN
table public.xpto: UPDATE: id[integer]:2 toasted_col1[text]:null rand1[double precision]:3077 toasted_col2[text]:'toasted2-upsert00010002000300040005000600070008000900100011001200130014001500160017001
COMMIT
BEGIN
table public.xpto: DELETE: id[integer]:1
COMMIT
BEGIN
table public.toasted_key: INSERT: id[integer]:1 toasted_key[text]:'1234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123
COMMIT
BEGIN
table public.toasted_key: UPDATE: id[integer]:1 toasted_key[text]:unchanged-toast-datum toasted_col1[text]:unchanged-toast-datum toasted_col2[text]:'987654321098765432109876543210987654321098765432109
COMMIT
BEGIN
table public.toasted_key: UPDATE: old-key: toasted_key[text]:'123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678
COMMIT
BEGIN
table public.toasted_key: DELETE: toasted_key[text]:'123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567
COMMIT
BEGIN
table public.toasted_copy: INSERT: id[integer]:1 data[text]:'untoasted1'
table public.toasted_copy: INSERT: id[integer]:2 data[text]:'toasted1-1234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890
table public.toasted_copy: INSERT: id[integer]:3 data[text]:'untoasted2'
table public.toasted_copy: INSERT: id[integer]:4 data[text]:'toasted2-1234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890
table public.toasted_copy: INSERT: id[integer]:5 data[text]:'untoasted3'
table public.toasted_copy: INSERT: id[integer]:6 data[text]:'untoasted4'
table public.toasted_copy: INSERT: id[integer]:7 data[text]:'untoasted5'
table public.toasted_copy: INSERT: id[integer]:8 data[text]:'untoasted6'
table public.toasted_copy: INSERT: id[integer]:9 data[text]:'untoasted7'
table public.toasted_copy: INSERT: id[integer]:10 data[text]:'untoasted8'
table public.toasted_copy: INSERT: id[integer]:11 data[text]:'untoasted9'
table public.toasted_copy: INSERT: id[integer]:12 data[text]:'untoasted10'
table public.toasted_copy: INSERT: id[integer]:13 data[text]:'untoasted11'
table public.toasted_copy: INSERT: id[integer]:14 data[text]:'untoasted12'
table public.toasted_copy: INSERT: id[integer]:15 data[text]:'untoasted13'
table public.toasted_copy: INSERT: id[integer]:16 data[text]:'untoasted14'
table public.toasted_copy: INSERT: id[integer]:17 data[text]:'untoasted15'
table public.toasted_copy: INSERT: id[integer]:18 data[text]:'untoasted16'
table public.toasted_copy: INSERT: id[integer]:19 data[text]:'untoasted17'
table public.toasted_copy: INSERT: id[integer]:20 data[text]:'untoasted18'
table public.toasted_copy: INSERT: id[integer]:21 data[text]:'untoasted19'
table public.toasted_copy: INSERT: id[integer]:22 data[text]:'untoasted20'
table public.toasted_copy: INSERT: id[integer]:23 data[text]:'untoasted21'
table public.toasted_copy: INSERT: id[integer]:24 data[text]:'untoasted22'
table public.toasted_copy: INSERT: id[integer]:25 data[text]:'untoasted23'
table public.toasted_copy: INSERT: id[integer]:26 data[text]:'untoasted24'
table public.toasted_copy: INSERT: id[integer]:27 data[text]:'untoasted25'
table public.toasted_copy: INSERT: id[integer]:28 data[text]:'untoasted26'
table public.toasted_copy: INSERT: id[integer]:29 data[text]:'untoasted27'
table public.toasted_copy: INSERT: id[integer]:30 data[text]:'untoasted28'
table public.toasted_copy: INSERT: id[integer]:31 data[text]:'untoasted29'
table public.toasted_copy: INSERT: id[integer]:32 data[text]:'untoasted30'
table public.toasted_copy: INSERT: id[integer]:33 data[text]:'untoasted31'
table public.toasted_copy: INSERT: id[integer]:34 data[text]:'untoasted32'
table public.toasted_copy: INSERT: id[integer]:35 data[text]:'untoasted33'
table public.toasted_copy: INSERT: id[integer]:36 data[text]:'untoasted34'
table public.toasted_copy: INSERT: id[integer]:37 data[text]:'untoasted35'
table public.toasted_copy: INSERT: id[integer]:38 data[text]:'untoasted36'
table public.toasted_copy: INSERT: id[integer]:39 data[text]:'untoasted37'
table public.toasted_copy: INSERT: id[integer]:40 data[text]:'untoasted38'
table public.toasted_copy: INSERT: id[integer]:41 data[text]:'untoasted39'
table public.toasted_copy: INSERT: id[integer]:42 data[text]:'untoasted40'
table public.toasted_copy: INSERT: id[integer]:43 data[text]:'untoasted41'
table public.toasted_copy: INSERT: id[integer]:44 data[text]:'untoasted42'
table public.toasted_copy: INSERT: id[integer]:45 data[text]:'untoasted43'
table public.toasted_copy: INSERT: id[integer]:46 data[text]:'untoasted44'
table public.toasted_copy: INSERT: id[integer]:47 data[text]:'untoasted45'
table public.toasted_copy: INSERT: id[integer]:48 data[text]:'untoasted46'
table public.toasted_copy: INSERT: id[integer]:49 data[text]:'untoasted47'
table public.toasted_copy: INSERT: id[integer]:50 data[text]:'untoasted48'
table public.toasted_copy: INSERT: id[integer]:51 data[text]:'untoasted49'
table public.toasted_copy: INSERT: id[integer]:52 data[text]:'untoasted50'
table public.toasted_copy: INSERT: id[integer]:53 data[text]:'untoasted51'
table public.toasted_copy: INSERT: id[integer]:54 data[text]:'untoasted52'
table public.toasted_copy: INSERT: id[integer]:55 data[text]:'untoasted53'
table public.toasted_copy: INSERT: id[integer]:56 data[text]:'untoasted54'
table public.toasted_copy: INSERT: id[integer]:57 data[text]:'untoasted55'
table public.toasted_copy: INSERT: id[integer]:58 data[text]:'untoasted56'
table public.toasted_copy: INSERT: id[integer]:59 data[text]:'untoasted57'
table public.toasted_copy: INSERT: id[integer]:60 data[text]:'untoasted58'
table public.toasted_copy: INSERT: id[integer]:61 data[text]:'untoasted59'
table public.toasted_copy: INSERT: id[integer]:62 data[text]:'untoasted60'
table public.toasted_copy: INSERT: id[integer]:63 data[text]:'untoasted61'
table public.toasted_copy: INSERT: id[integer]:64 data[text]:'untoasted62'
table public.toasted_copy: INSERT: id[integer]:65 data[text]:'untoasted63'
table public.toasted_copy: INSERT: id[integer]:66 data[text]:'untoasted64'
table public.toasted_copy: INSERT: id[integer]:67 data[text]:'untoasted65'
table public.toasted_copy: INSERT: id[integer]:68 data[text]:'untoasted66'
table public.toasted_copy: INSERT: id[integer]:69 data[text]:'untoasted67'
table public.toasted_copy: INSERT: id[integer]:70 data[text]:'untoasted68'
table public.toasted_copy: INSERT: id[integer]:71 data[text]:'untoasted69'
table public.toasted_copy: INSERT: id[integer]:72 data[text]:'untoasted70'
table public.toasted_copy: INSERT: id[integer]:73 data[text]:'untoasted71'
table public.toasted_copy: INSERT: id[integer]:74 data[text]:'untoasted72'
table public.toasted_copy: INSERT: id[integer]:75 data[text]:'untoasted73'
table public.toasted_copy: INSERT: id[integer]:76 data[text]:'untoasted74'
table public.toasted_copy: INSERT: id[integer]:77 data[text]:'untoasted75'
table public.toasted_copy: INSERT: id[integer]:78 data[text]:'untoasted76'
table public.toasted_copy: INSERT: id[integer]:79 data[text]:'untoasted77'
table public.toasted_copy: INSERT: id[integer]:80 data[text]:'untoasted78'
table public.toasted_copy: INSERT: id[integer]:81 data[text]:'untoasted79'
table public.toasted_copy: INSERT: id[integer]:82 data[text]:'untoasted80'
table public.toasted_copy: INSERT: id[integer]:83 data[text]:'untoasted81'
table public.toasted_copy: INSERT: id[integer]:84 data[text]:'untoasted82'
table public.toasted_copy: INSERT: id[integer]:85 data[text]:'untoasted83'
table public.toasted_copy: INSERT: id[integer]:86 data[text]:'untoasted84'
table public.toasted_copy: INSERT: id[integer]:87 data[text]:'untoasted85'
table public.toasted_copy: INSERT: id[integer]:88 data[text]:'untoasted86'
table public.toasted_copy: INSERT: id[integer]:89 data[text]:'untoasted87'
table public.toasted_copy: INSERT: id[integer]:90 data[text]:'untoasted88'
table public.toasted_copy: INSERT: id[integer]:91 data[text]:'untoasted89'
table public.toasted_copy: INSERT: id[integer]:92 data[text]:'untoasted90'
table public.toasted_copy: INSERT: id[integer]:93 data[text]:'untoasted91'
table public.toasted_copy: INSERT: id[integer]:94 data[text]:'untoasted92'
table public.toasted_copy: INSERT: id[integer]:95 data[text]:'untoasted93'
table public.toasted_copy: INSERT: id[integer]:96 data[text]:'untoasted94'
table public.toasted_copy: INSERT: id[integer]:97 data[text]:'untoasted95'
table public.toasted_copy: INSERT: id[integer]:98 data[text]:'untoasted96'
table public.toasted_copy: INSERT: id[integer]:99 data[text]:'untoasted97'
table public.toasted_copy: INSERT: id[integer]:100 data[text]:'untoasted98'
table public.toasted_copy: INSERT: id[integer]:101 data[text]:'untoasted99'
table public.toasted_copy: INSERT: id[integer]:102 data[text]:'untoasted100'
table public.toasted_copy: INSERT: id[integer]:103 data[text]:'untoasted101'
table public.toasted_copy: INSERT: id[integer]:104 data[text]:'untoasted102'
table public.toasted_copy: INSERT: id[integer]:105 data[text]:'untoasted103'
table public.toasted_copy: INSERT: id[integer]:106 data[text]:'untoasted104'
table public.toasted_copy: INSERT: id[integer]:107 data[text]:'untoasted105'
table public.toasted_copy: INSERT: id[integer]:108 data[text]:'untoasted106'
table public.toasted_copy: INSERT: id[integer]:109 data[text]:'untoasted107'
table public.toasted_copy: INSERT: id[integer]:110 data[text]:'untoasted108'
table public.toasted_copy: INSERT: id[integer]:111 data[text]:'untoasted109'
table public.toasted_copy: INSERT: id[integer]:112 data[text]:'untoasted110'
table public.toasted_copy: INSERT: id[integer]:113 data[text]:'untoasted111'
table public.toasted_copy: INSERT: id[integer]:114 data[text]:'untoasted112'
table public.toasted_copy: INSERT: id[integer]:115 data[text]:'untoasted113'
table public.toasted_copy: INSERT: id[integer]:116 data[text]:'untoasted114'
table public.toasted_copy: INSERT: id[integer]:117 data[text]:'untoasted115'
table public.toasted_copy: INSERT: id[integer]:118 data[text]:'untoasted116'
table public.toasted_copy: INSERT: id[integer]:119 data[text]:'untoasted117'
table public.toasted_copy: INSERT: id[integer]:120 data[text]:'untoasted118'
table public.toasted_copy: INSERT: id[integer]:121 data[text]:'untoasted119'
table public.toasted_copy: INSERT: id[integer]:122 data[text]:'untoasted120'
table public.toasted_copy: INSERT: id[integer]:123 data[text]:'untoasted121'
table public.toasted_copy: INSERT: id[integer]:124 data[text]:'untoasted122'
table public.toasted_copy: INSERT: id[integer]:125 data[text]:'untoasted123'
table public.toasted_copy: INSERT: id[integer]:126 data[text]:'untoasted124'
table public.toasted_copy: INSERT: id[integer]:127 data[text]:'untoasted125'
table public.toasted_copy: INSERT: id[integer]:128 data[text]:'untoasted126'
table public.toasted_copy: INSERT: id[integer]:129 data[text]:'untoasted127'
table public.toasted_copy: INSERT: id[integer]:130 data[text]:'untoasted128'
table public.toasted_copy: INSERT: id[integer]:131 data[text]:'untoasted129'
table public.toasted_copy: INSERT: id[integer]:132 data[text]:'untoasted130'
table public.toasted_copy: INSERT: id[integer]:133 data[text]:'untoasted131'
table public.toasted_copy: INSERT: id[integer]:134 data[text]:'untoasted132'
table public.toasted_copy: INSERT: id[integer]:135 data[text]:'untoasted133'
table public.toasted_copy: INSERT: id[integer]:136 data[text]:'untoasted134'
table public.toasted_copy: INSERT: id[integer]:137 data[text]:'untoasted135'
table public.toasted_copy: INSERT: id[integer]:138 data[text]:'untoasted136'
table public.toasted_copy: INSERT: id[integer]:139 data[text]:'untoasted137'
table public.toasted_copy: INSERT: id[integer]:140 data[text]:'untoasted138'
table public.toasted_copy: INSERT: id[integer]:141 data[text]:'untoasted139'
table public.toasted_copy: INSERT: id[integer]:142 data[text]:'untoasted140'
table public.toasted_copy: INSERT: id[integer]:143 data[text]:'untoasted141'
table public.toasted_copy: INSERT: id[integer]:144 data[text]:'untoasted142'
table public.toasted_copy: INSERT: id[integer]:145 data[text]:'untoasted143'
table public.toasted_copy: INSERT: id[integer]:146 data[text]:'untoasted144'
table public.toasted_copy: INSERT: id[integer]:147 data[text]:'untoasted145'
table public.toasted_copy: INSERT: id[integer]:148 data[text]:'untoasted146'
table public.toasted_copy: INSERT: id[integer]:149 data[text]:'untoasted147'
table public.toasted_copy: INSERT: id[integer]:150 data[text]:'untoasted148'
table public.toasted_copy: INSERT: id[integer]:151 data[text]:'untoasted149'
table public.toasted_copy: INSERT: id[integer]:152 data[text]:'untoasted150'
table public.toasted_copy: INSERT: id[integer]:153 data[text]:'untoasted151'
table public.toasted_copy: INSERT: id[integer]:154 data[text]:'untoasted152'
table public.toasted_copy: INSERT: id[integer]:155 data[text]:'untoasted153'
table public.toasted_copy: INSERT: id[integer]:156 data[text]:'untoasted154'
table public.toasted_copy: INSERT: id[integer]:157 data[text]:'untoasted155'
table public.toasted_copy: INSERT: id[integer]:158 data[text]:'untoasted156'
table public.toasted_copy: INSERT: id[integer]:159 data[text]:'untoasted157'
table public.toasted_copy: INSERT: id[integer]:160 data[text]:'untoasted158'
table public.toasted_copy: INSERT: id[integer]:161 data[text]:'untoasted159'
table public.toasted_copy: INSERT: id[integer]:162 data[text]:'untoasted160'
table public.toasted_copy: INSERT: id[integer]:163 data[text]:'untoasted161'
table public.toasted_copy: INSERT: id[integer]:164 data[text]:'untoasted162'
table public.toasted_copy: INSERT: id[integer]:165 data[text]:'untoasted163'
table public.toasted_copy: INSERT: id[integer]:166 data[text]:'untoasted164'
table public.toasted_copy: INSERT: id[integer]:167 data[text]:'untoasted165'
table public.toasted_copy: INSERT: id[integer]:168 data[text]:'untoasted166'
table public.toasted_copy: INSERT: id[integer]:169 data[text]:'untoasted167'
table public.toasted_copy: INSERT: id[integer]:170 data[text]:'untoasted168'
table public.toasted_copy: INSERT: id[integer]:171 data[text]:'untoasted169'
table public.toasted_copy: INSERT: id[integer]:172 data[text]:'untoasted170'
table public.toasted_copy: INSERT: id[integer]:173 data[text]:'untoasted171'
table public.toasted_copy: INSERT: id[integer]:174 data[text]:'untoasted172'
table public.toasted_copy: INSERT: id[integer]:175 data[text]:'untoasted173'
table public.toasted_copy: INSERT: id[integer]:176 data[text]:'untoasted174'
table public.toasted_copy: INSERT: id[integer]:177 data[text]:'untoasted175'
table public.toasted_copy: INSERT: id[integer]:178 data[text]:'untoasted176'
table public.toasted_copy: INSERT: id[integer]:179 data[text]:'untoasted177'
table public.toasted_copy: INSERT: id[integer]:180 data[text]:'untoasted178'
table public.toasted_copy: INSERT: id[integer]:181 data[text]:'untoasted179'
table public.toasted_copy: INSERT: id[integer]:182 data[text]:'untoasted180'
table public.toasted_copy: INSERT: id[integer]:183 data[text]:'untoasted181'
table public.toasted_copy: INSERT: id[integer]:184 data[text]:'untoasted182'
table public.toasted_copy: INSERT: id[integer]:185 data[text]:'untoasted183'
table public.toasted_copy: INSERT: id[integer]:186 data[text]:'untoasted184'
table public.toasted_copy: INSERT: id[integer]:187 data[text]:'untoasted185'
table public.toasted_copy: INSERT: id[integer]:188 data[text]:'untoasted186'
table public.toasted_copy: INSERT: id[integer]:189 data[text]:'untoasted187'
table public.toasted_copy: INSERT: id[integer]:190 data[text]:'untoasted188'
table public.toasted_copy: INSERT: id[integer]:191 data[text]:'untoasted189'
table public.toasted_copy: INSERT: id[integer]:192 data[text]:'untoasted190'
table public.toasted_copy: INSERT: id[integer]:193 data[text]:'untoasted191'
table public.toasted_copy: INSERT: id[integer]:194 data[text]:'untoasted192'
table public.toasted_copy: INSERT: id[integer]:195 data[text]:'untoasted193'
table public.toasted_copy: INSERT: id[integer]:196 data[text]:'untoasted194'
table public.toasted_copy: INSERT: id[integer]:197 data[text]:'untoasted195'
table public.toasted_copy: INSERT: id[integer]:198 data[text]:'untoasted196'
table public.toasted_copy: INSERT: id[integer]:199 data[text]:'untoasted197'
table public.toasted_copy: INSERT: id[integer]:200 data[text]:'untoasted198'
table public.toasted_copy: INSERT: id[integer]:201 data[text]:'toasted3-12345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678
table public.toasted_copy: INSERT: id[integer]:202 data[text]:'untoasted199'
table public.toasted_copy: INSERT: id[integer]:203 data[text]:'untoasted200'
COMMIT
(235 rows)
-- test we can decode "old" tuples bigger than the max heap tuple size correctly
DROP TABLE IF EXISTS toasted_several;
NOTICE: table "toasted_several" does not exist, skipping
CREATE TABLE toasted_several (
id serial unique not null,
toasted_key text primary key,
toasted_col1 text,
toasted_col2 text
);
ALTER TABLE toasted_several REPLICA IDENTITY FULL;
ALTER TABLE toasted_several ALTER COLUMN toasted_key SET STORAGE EXTERNAL;
ALTER TABLE toasted_several ALTER COLUMN toasted_col1 SET STORAGE EXTERNAL;
ALTER TABLE toasted_several ALTER COLUMN toasted_col2 SET STORAGE EXTERNAL;
INSERT INTO toasted_several(toasted_key) VALUES(repeat('9876543210', 2000));
SELECT regexp_replace(data, '^(.{100}).*(.{100})$', '\1..\2') FROM pg_logical_slot_peek_changes('regression_slot', NULL, NULL, 'include-xids', '0', 'skip-empty-xacts', '1');
regexp_replace
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
BEGIN
table public.toasted_several: INSERT: id[integer]:1 toasted_key[text]:'98765432109876543210987654321..098765432109876543210987654321098765432109876543210' toasted_col1[text]:null toasted_col2[text]:null
COMMIT
(3 rows)
-- test update of a toasted key without changing it
UPDATE toasted_several SET toasted_col1 = toasted_key;
UPDATE toasted_several SET toasted_col2 = toasted_col1;
SELECT regexp_replace(data, '^(.{100}).*(.{100})$', '\1..\2') FROM pg_logical_slot_get_changes('regression_slot', NULL, NULL, 'include-xids', '0', 'skip-empty-xacts', '1');
regexp_replace
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
BEGIN
table public.toasted_several: INSERT: id[integer]:1 toasted_key[text]:'98765432109876543210987654321..098765432109876543210987654321098765432109876543210' toasted_col1[text]:null toasted_col2[text]:null
COMMIT
BEGIN
table public.toasted_several: UPDATE: old-key: id[integer]:1 toasted_key[text]:'98765432109876543210..432109876543210987654321098765432109876543210987654321098765432109876543210' toasted_col2[text]:null
COMMIT
BEGIN
table public.toasted_several: UPDATE: old-key: id[integer]:1 toasted_key[text]:'98765432109876543210..876543210987654321098765432109876543210987654321098765432109876543210987654321098765432109876543210'
COMMIT
(9 rows)
/*
* update with large tuplebuf, in a transaction large enough to force to spool to disk
*/
BEGIN;
INSERT INTO toasted_several(toasted_key) SELECT * FROM generate_series(1, 10234);
UPDATE toasted_several SET toasted_col1 = toasted_col2 WHERE id = 1;
DELETE FROM toasted_several WHERE id = 1;
COMMIT;
DROP TABLE toasted_several;
SELECT regexp_replace(data, '^(.{100}).*(.{100})$', '\1..\2') FROM pg_logical_slot_get_changes('regression_slot', NULL, NULL, 'include-xids', '0', 'skip-empty-xacts', '1')
WHERE data NOT LIKE '%INSERT: %';
regexp_replace
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
BEGIN
table public.toasted_several: UPDATE: old-key: id[integer]:1 toasted_key[text]:'98765432109876543210..7654321098765432109876543210987654321098765432109876543210' toasted_col2[text]:unchanged-toast-datum
table public.toasted_several: DELETE: id[integer]:1 toasted_key[text]:'98765432109876543210987654321..876543210987654321098765432109876543210987654321098765432109876543210987654321098765432109876543210'
COMMIT
(4 rows)
SELECT pg_drop_replication_slot('regression_slot');
pg_drop_replication_slot
--------------------------
(1 row)
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