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Diffstat (limited to 'src/test/regress/sql/strings.sql')
| -rw-r--r-- | src/test/regress/sql/strings.sql | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/src/test/regress/sql/strings.sql b/src/test/regress/sql/strings.sql index 92c445c2439..b94004cc08c 100644 --- a/src/test/regress/sql/strings.sql +++ b/src/test/regress/sql/strings.sql @@ -650,6 +650,26 @@ SELECT length(c), c::text FROM toasttest; SELECT c FROM toasttest; DROP TABLE toasttest; +-- test with short varlenas (up to 126 data bytes reduced to a 1-byte header) +-- being toasted. +CREATE TABLE toasttest (f1 text, f2 text); +ALTER TABLE toasttest SET (toast_tuple_target = 128); +ALTER TABLE toasttest ALTER COLUMN f1 SET STORAGE EXTERNAL; +ALTER TABLE toasttest ALTER COLUMN f2 SET STORAGE EXTERNAL; +-- Here, the first value is a varlena large enough to make it toasted and +-- stored uncompressed. The second value is a short varlena, toasted +-- and stored uncompressed. +INSERT INTO toasttest values(repeat('1234', 1000), repeat('5678', 30)); +SELECT reltoastrelid::regclass AS reltoastname FROM pg_class + WHERE oid = 'toasttest'::regclass \gset +-- There should be two values inserted in the toast relation. +SELECT count(*) FROM :reltoastname WHERE chunk_seq = 0; +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; +DROP TABLE toasttest; + -- -- test length -- |