91 lines
4.2 KiB
Plaintext
91 lines
4.2 KiB
Plaintext
-- predictability
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SET synchronous_commit = on;
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DROP TABLE IF EXISTS xpto;
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NOTICE: table "xpto" does not exist, skipping
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SELECT 'init' FROM pg_create_logical_replication_slot('regression_slot', 'test_decoding');
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?column?
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----------
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init
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(1 row)
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CREATE SEQUENCE xpto_rand_seq START 79 INCREMENT 1499; -- portable "random"
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CREATE TABLE xpto (
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id serial primary key,
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toasted_col1 text,
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rand1 float8 DEFAULT nextval('xpto_rand_seq'),
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toasted_col2 text,
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rand2 float8 DEFAULT nextval('xpto_rand_seq')
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);
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-- uncompressed external toast data
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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);
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-- compressed external toast data
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INSERT INTO xpto (toasted_col2) SELECT repeat(string_agg(to_char(g.i, 'FM0000'), ''), 50) FROM generate_series(1, 500) g(i);
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-- update of existing column
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UPDATE xpto SET toasted_col1 = (SELECT string_agg(g.i::text, '') FROM generate_series(1, 2000) g(i)) WHERE id = 1;
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UPDATE xpto SET rand1 = 123.456 WHERE id = 1;
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DELETE FROM xpto WHERE id = 1;
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DROP TABLE IF EXISTS toasted_key;
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NOTICE: table "toasted_key" does not exist, skipping
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CREATE TABLE toasted_key (
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id serial,
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toasted_key text PRIMARY KEY,
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toasted_col1 text,
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toasted_col2 text
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);
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ALTER TABLE toasted_key ALTER COLUMN toasted_key SET STORAGE EXTERNAL;
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ALTER TABLE toasted_key ALTER COLUMN toasted_col1 SET STORAGE EXTERNAL;
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INSERT INTO toasted_key(toasted_key, toasted_col1) VALUES(repeat('1234567890', 200), repeat('9876543210', 200));
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-- test update of a toasted key without changing it
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UPDATE toasted_key SET toasted_col2 = toasted_col1;
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-- test update of a toasted key, changing it
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UPDATE toasted_key SET toasted_key = toasted_key || '1';
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DELETE FROM toasted_key;
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SELECT substr(data, 1, 200) FROM pg_logical_slot_get_changes('regression_slot', NULL, NULL, 'include-xids', '0');
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substr
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----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
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BEGIN
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COMMIT
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BEGIN
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COMMIT
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BEGIN
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table public.xpto: INSERT: id[integer]:1 toasted_col1[text]:'1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374
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COMMIT
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BEGIN
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table public.xpto: INSERT: id[integer]:2 toasted_col1[text]:null rand1[double precision]:3077 toasted_col2[text]:'00010002000300040005000600070008000900100011001200130014001500160017001800190020002100
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COMMIT
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BEGIN
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table public.xpto: UPDATE: id[integer]:1 toasted_col1[text]:'1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374
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COMMIT
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BEGIN
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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
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COMMIT
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BEGIN
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table public.xpto: DELETE: id[integer]:1
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COMMIT
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BEGIN
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COMMIT
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BEGIN
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COMMIT
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BEGIN
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COMMIT
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BEGIN
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table public.toasted_key: INSERT: id[integer]:1 toasted_key[text]:'1234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123
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COMMIT
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BEGIN
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table public.toasted_key: UPDATE: id[integer]:1 toasted_key[text]:unchanged-toast-datum toasted_col1[text]:unchanged-toast-datum toasted_col2[text]:'987654321098765432109876543210987654321098765432109
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COMMIT
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BEGIN
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table public.toasted_key: UPDATE: old-key: toasted_key[text]:'123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678
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COMMIT
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BEGIN
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table public.toasted_key: DELETE: toasted_key[text]:'123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567
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COMMIT
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(37 rows)
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SELECT pg_drop_replication_slot('regression_slot');
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pg_drop_replication_slot
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--------------------------
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(1 row)
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