CREATE TABLE delete_test (
id SERIAL PRIMARY KEY,
- a INT
+ a INT,
+ b text
);
NOTICE: CREATE TABLE will create implicit sequence "delete_test_id_seq" for serial column "delete_test.id"
NOTICE: CREATE TABLE / PRIMARY KEY will create implicit index "delete_test_pkey" for table "delete_test"
INSERT INTO delete_test (a) VALUES (10);
-INSERT INTO delete_test (a) VALUES (50);
+INSERT INTO delete_test (a, b) VALUES (50, repeat('x', 10000));
INSERT INTO delete_test (a) VALUES (100);
-- allow an alias to be specified for DELETE's target table
DELETE FROM delete_test AS dt WHERE dt.a > 75;
LINE 1: DELETE FROM delete_test dt WHERE delete_test.a > 25;
^
HINT: Perhaps you meant to reference the table alias "dt".
-SELECT * FROM delete_test;
- id | a
-----+----
- 1 | 10
- 2 | 50
+SELECT id, a, char_length(b) FROM delete_test;
+ id | a | char_length
+----+----+-------------
+ 1 | 10 |
+ 2 | 50 | 10000
(2 rows)
+-- delete a row with a TOASTed value
+DELETE FROM delete_test WHERE a > 25;
+SELECT id, a, char_length(b) FROM delete_test;
+ id | a | char_length
+----+----+-------------
+ 1 | 10 |
+(1 row)
+
DROP TABLE delete_test;
2 | 3 | values are fun!
(7 rows)
+--
+-- TOASTed value test
+--
+insert into inserttest values(30, 50, repeat('x', 10000));
+select col1, col2, char_length(col3) from inserttest;
+ col1 | col2 | char_length
+------+------+-------------
+ | 3 | 7
+ | 5 | 7
+ | 5 | 4
+ | 7 | 7
+ 10 | 20 | 2
+ -1 | 2 | 7
+ 2 | 3 | 15
+ 30 | 50 | 10000
+(8 rows)
+
drop table inserttest;
LINE 1: UPDATE update_test AS t SET b = update_test.b + 10 WHERE t.a...
^
HINT: Perhaps you meant to reference the table alias "t".
+-- Make sure that we can update to a TOASTed value.
+UPDATE update_test SET c = repeat('x', 10000) WHERE c = 'car';
+SELECT a, b, char_length(c) FROM update_test;
+ a | b | char_length
+-----+----+-------------
+ 100 | 20 |
+ 11 | 41 | 10000
+(2 rows)
+
DROP TABLE update_test;
CREATE TABLE delete_test (
id SERIAL PRIMARY KEY,
- a INT
+ a INT,
+ b text
);
INSERT INTO delete_test (a) VALUES (10);
-INSERT INTO delete_test (a) VALUES (50);
+INSERT INTO delete_test (a, b) VALUES (50, repeat('x', 10000));
INSERT INTO delete_test (a) VALUES (100);
-- allow an alias to be specified for DELETE's target table
-- to be referenced
DELETE FROM delete_test dt WHERE delete_test.a > 25;
-SELECT * FROM delete_test;
+SELECT id, a, char_length(b) FROM delete_test;
+
+-- delete a row with a TOASTed value
+DELETE FROM delete_test WHERE a > 25;
+
+SELECT id, a, char_length(b) FROM delete_test;
DROP TABLE delete_test;
select * from inserttest;
+--
+-- TOASTed value test
+--
+insert into inserttest values(30, 50, repeat('x', 10000));
+
+select col1, col2, char_length(col3) from inserttest;
+
drop table inserttest;
-- to the original table name
UPDATE update_test AS t SET b = update_test.b + 10 WHERE t.a = 10;
+-- Make sure that we can update to a TOASTed value.
+UPDATE update_test SET c = repeat('x', 10000) WHERE c = 'car';
+SELECT a, b, char_length(c) FROM update_test;
+
DROP TABLE update_test;