From b00fa7379eece6e3da2d46c0fd19aa80531cd7a9 Mon Sep 17 00:00:00 2001 From: Michael Paquier Date: Fri, 23 Jan 2026 15:32:50 +0900 Subject: [PATCH] More tests for TOAST and STORAGE --- src/test/regress/expected/strings.out | 52 +++++++++++++++++++++++++++ src/test/regress/sql/strings.sql | 22 ++++++++++++ 2 files changed, 74 insertions(+) diff --git a/src/test/regress/expected/strings.out b/src/test/regress/expected/strings.out index 5f2b5c391739..db03fd00d071 100644 --- a/src/test/regress/expected/strings.out +++ b/src/test/regress/expected/strings.out @@ -2159,6 +2159,58 @@ SELECT pg_column_compression(f1) AS f1_comp, pg_column_compression(f2) AS f2_com | (1 row) +TRUNCATE toasttest; +-- test with inline compressible varlenas. +ALTER TABLE toasttest ALTER COLUMN f1 SET STORAGE MAIN; +ALTER TABLE toasttest ALTER COLUMN f2 SET STORAGE MAIN; +INSERT INTO toasttest values(repeat('1234', 1024), repeat('5678', 1024)); +-- There should be no values in the toast relation. +SELECT substr(f1, 5, 10) AS f1_data, substr(f2, 5, 10) AS f2_data + FROM toasttest; + f1_data | f2_data +------------+------------ + 1234123412 | 5678567856 +(1 row) + +SELECT pg_column_compression(f1) AS f1_comp, pg_column_compression(f2) AS f2_comp + FROM toasttest; + f1_comp | f2_comp +---------+--------- + pglz | pglz +(1 row) + +SELECT count(*) FROM :reltoastname; + count +------- + 0 +(1 row) + +TRUNCATE toasttest; +-- test with external compressed data (default) +ALTER TABLE toasttest ALTER COLUMN f1 SET STORAGE EXTENDED; +ALTER TABLE toasttest ALTER COLUMN f2 SET STORAGE EXTENDED; +INSERT INTO toasttest values(repeat('1234', 10240), NULL); +-- There should be one value in the toast relation. +SELECT substr(f1, 5, 10) AS f1_data, substr(f2, 5, 10) AS f2_data + FROM toasttest; + f1_data | f2_data +------------+--------- + 1234123412 | +(1 row) + +SELECT pg_column_compression(f1) AS f1_comp, pg_column_compression(f2) AS f2_comp + FROM toasttest; + f1_comp | f2_comp +---------+--------- + pglz | +(1 row) + +SELECT count(*) FROM :reltoastname; + count +------- + 1 +(1 row) + DROP TABLE toasttest; -- -- test length diff --git a/src/test/regress/sql/strings.sql b/src/test/regress/sql/strings.sql index 37c0893ae838..592599722b8b 100644 --- a/src/test/regress/sql/strings.sql +++ b/src/test/regress/sql/strings.sql @@ -678,6 +678,28 @@ SELECT substr(f1, 5, 10) AS f1_data, substr(f2, 5, 10) AS f2_data FROM toasttest; SELECT pg_column_compression(f1) AS f1_comp, pg_column_compression(f2) AS f2_comp FROM toasttest; +TRUNCATE toasttest; +-- test with inline compressible varlenas. +ALTER TABLE toasttest ALTER COLUMN f1 SET STORAGE MAIN; +ALTER TABLE toasttest ALTER COLUMN f2 SET STORAGE MAIN; +INSERT INTO toasttest values(repeat('1234', 1024), repeat('5678', 1024)); +-- There should be no values in the toast relation. +SELECT substr(f1, 5, 10) AS f1_data, substr(f2, 5, 10) AS f2_data + FROM toasttest; +SELECT pg_column_compression(f1) AS f1_comp, pg_column_compression(f2) AS f2_comp + FROM toasttest; +SELECT count(*) FROM :reltoastname; +TRUNCATE toasttest; +-- test with external compressed data (default) +ALTER TABLE toasttest ALTER COLUMN f1 SET STORAGE EXTENDED; +ALTER TABLE toasttest ALTER COLUMN f2 SET STORAGE EXTENDED; +INSERT INTO toasttest values(repeat('1234', 10240), NULL); +-- There should be one value in the toast relation. +SELECT substr(f1, 5, 10) AS f1_data, substr(f2, 5, 10) AS f2_data + FROM toasttest; +SELECT pg_column_compression(f1) AS f1_comp, pg_column_compression(f2) AS f2_comp + FROM toasttest; +SELECT count(*) FROM :reltoastname; DROP TABLE toasttest; -- -- 2.51.0