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894be11adf
This avoids naming conflicts with concurrent tests with similarly named objects. Currently, there are none, but a tests for virtual generated columns are planned to be added. Reviewed-by: Corey Huinker <corey.huinker@gmail.com> Reviewed-by: Tomasz Rybak <tomasz.rybak@post.pl> Discussion: https://www.postgresql.org/message-id/flat/a368248e-69e4-40be-9c07-6c3b5880b0a6@eisentraut.org
678 lines
24 KiB
PL/PgSQL
678 lines
24 KiB
PL/PgSQL
-- sanity check of system catalog
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SELECT attrelid, attname, attgenerated FROM pg_attribute WHERE attgenerated NOT IN ('', 's');
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CREATE SCHEMA generated_stored_tests;
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GRANT USAGE ON SCHEMA generated_stored_tests TO PUBLIC;
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SET search_path = generated_stored_tests;
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CREATE TABLE gtest0 (a int PRIMARY KEY, b int GENERATED ALWAYS AS (55) STORED);
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CREATE TABLE gtest1 (a int PRIMARY KEY, b int GENERATED ALWAYS AS (a * 2) STORED);
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SELECT table_name, column_name, column_default, is_nullable, is_generated, generation_expression FROM information_schema.columns WHERE table_schema = 'generated_stored_tests' ORDER BY 1, 2;
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SELECT table_name, column_name, dependent_column FROM information_schema.column_column_usage WHERE table_schema = 'generated_stored_tests' ORDER BY 1, 2, 3;
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\d gtest1
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-- duplicate generated
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CREATE TABLE gtest_err_1 (a int PRIMARY KEY, b int GENERATED ALWAYS AS (a * 2) STORED GENERATED ALWAYS AS (a * 3) STORED);
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-- references to other generated columns, including self-references
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CREATE TABLE gtest_err_2a (a int PRIMARY KEY, b int GENERATED ALWAYS AS (b * 2) STORED);
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CREATE TABLE gtest_err_2b (a int PRIMARY KEY, b int GENERATED ALWAYS AS (a * 2) STORED, c int GENERATED ALWAYS AS (b * 3) STORED);
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-- a whole-row var is a self-reference on steroids, so disallow that too
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CREATE TABLE gtest_err_2c (a int PRIMARY KEY,
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b int GENERATED ALWAYS AS (num_nulls(gtest_err_2c)) STORED);
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-- invalid reference
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CREATE TABLE gtest_err_3 (a int PRIMARY KEY, b int GENERATED ALWAYS AS (c * 2) STORED);
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-- generation expression must be immutable
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CREATE TABLE gtest_err_4 (a int PRIMARY KEY, b double precision GENERATED ALWAYS AS (random()) STORED);
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-- ... but be sure that the immutability test is accurate
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CREATE TABLE gtest2 (a int, b text GENERATED ALWAYS AS (a || ' sec') STORED);
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DROP TABLE gtest2;
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-- cannot have default/identity and generated
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CREATE TABLE gtest_err_5a (a int PRIMARY KEY, b int DEFAULT 5 GENERATED ALWAYS AS (a * 2) STORED);
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CREATE TABLE gtest_err_5b (a int PRIMARY KEY, b int GENERATED ALWAYS AS identity GENERATED ALWAYS AS (a * 2) STORED);
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-- reference to system column not allowed in generated column
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-- (except tableoid, which we test below)
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CREATE TABLE gtest_err_6a (a int PRIMARY KEY, b bool GENERATED ALWAYS AS (xmin <> 37) STORED);
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-- various prohibited constructs
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CREATE TABLE gtest_err_7a (a int PRIMARY KEY, b int GENERATED ALWAYS AS (avg(a)) STORED);
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CREATE TABLE gtest_err_7b (a int PRIMARY KEY, b int GENERATED ALWAYS AS (row_number() OVER (ORDER BY a)) STORED);
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CREATE TABLE gtest_err_7c (a int PRIMARY KEY, b int GENERATED ALWAYS AS ((SELECT a)) STORED);
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CREATE TABLE gtest_err_7d (a int PRIMARY KEY, b int GENERATED ALWAYS AS (generate_series(1, a)) STORED);
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-- GENERATED BY DEFAULT not allowed
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CREATE TABLE gtest_err_8 (a int PRIMARY KEY, b int GENERATED BY DEFAULT AS (a * 2) STORED);
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INSERT INTO gtest1 VALUES (1);
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INSERT INTO gtest1 VALUES (2, DEFAULT); -- ok
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INSERT INTO gtest1 VALUES (3, 33); -- error
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INSERT INTO gtest1 VALUES (3, 33), (4, 44); -- error
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INSERT INTO gtest1 VALUES (3, DEFAULT), (4, 44); -- error
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INSERT INTO gtest1 VALUES (3, 33), (4, DEFAULT); -- error
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INSERT INTO gtest1 VALUES (3, DEFAULT), (4, DEFAULT); -- ok
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SELECT * FROM gtest1 ORDER BY a;
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DELETE FROM gtest1 WHERE a >= 3;
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UPDATE gtest1 SET b = DEFAULT WHERE a = 1;
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UPDATE gtest1 SET b = 11 WHERE a = 1; -- error
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SELECT * FROM gtest1 ORDER BY a;
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SELECT a, b, b * 2 AS b2 FROM gtest1 ORDER BY a;
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SELECT a, b FROM gtest1 WHERE b = 4 ORDER BY a;
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-- test that overflow error happens on write
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INSERT INTO gtest1 VALUES (2000000000);
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SELECT * FROM gtest1;
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DELETE FROM gtest1 WHERE a = 2000000000;
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-- test with joins
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CREATE TABLE gtestx (x int, y int);
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INSERT INTO gtestx VALUES (11, 1), (22, 2), (33, 3);
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SELECT * FROM gtestx, gtest1 WHERE gtestx.y = gtest1.a;
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DROP TABLE gtestx;
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-- test UPDATE/DELETE quals
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SELECT * FROM gtest1 ORDER BY a;
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UPDATE gtest1 SET a = 3 WHERE b = 4;
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SELECT * FROM gtest1 ORDER BY a;
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DELETE FROM gtest1 WHERE b = 2;
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SELECT * FROM gtest1 ORDER BY a;
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-- test MERGE
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CREATE TABLE gtestm (
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id int PRIMARY KEY,
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f1 int,
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f2 int,
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f3 int GENERATED ALWAYS AS (f1 * 2) STORED,
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f4 int GENERATED ALWAYS AS (f2 * 2) STORED
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);
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INSERT INTO gtestm VALUES (1, 5, 100);
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MERGE INTO gtestm t USING (VALUES (1, 10), (2, 20)) v(id, f1) ON t.id = v.id
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WHEN MATCHED THEN UPDATE SET f1 = v.f1
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WHEN NOT MATCHED THEN INSERT VALUES (v.id, v.f1, 200);
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SELECT * FROM gtestm ORDER BY id;
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DROP TABLE gtestm;
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-- views
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CREATE VIEW gtest1v AS SELECT * FROM gtest1;
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SELECT * FROM gtest1v;
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INSERT INTO gtest1v VALUES (4, 8); -- error
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INSERT INTO gtest1v VALUES (5, DEFAULT); -- ok
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INSERT INTO gtest1v VALUES (6, 66), (7, 77); -- error
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INSERT INTO gtest1v VALUES (6, DEFAULT), (7, 77); -- error
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INSERT INTO gtest1v VALUES (6, 66), (7, DEFAULT); -- error
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INSERT INTO gtest1v VALUES (6, DEFAULT), (7, DEFAULT); -- ok
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ALTER VIEW gtest1v ALTER COLUMN b SET DEFAULT 100;
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INSERT INTO gtest1v VALUES (8, DEFAULT); -- error
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INSERT INTO gtest1v VALUES (8, DEFAULT), (9, DEFAULT); -- error
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SELECT * FROM gtest1v;
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DELETE FROM gtest1v WHERE a >= 5;
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DROP VIEW gtest1v;
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-- CTEs
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WITH foo AS (SELECT * FROM gtest1) SELECT * FROM foo;
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-- inheritance
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CREATE TABLE gtest1_1 () INHERITS (gtest1);
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SELECT * FROM gtest1_1;
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\d gtest1_1
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INSERT INTO gtest1_1 VALUES (4);
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SELECT * FROM gtest1_1;
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SELECT * FROM gtest1;
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-- can't have generated column that is a child of normal column
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CREATE TABLE gtest_normal (a int, b int);
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CREATE TABLE gtest_normal_child (a int, b int GENERATED ALWAYS AS (a * 2) STORED) INHERITS (gtest_normal); -- error
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CREATE TABLE gtest_normal_child (a int, b int GENERATED ALWAYS AS (a * 2) STORED);
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ALTER TABLE gtest_normal_child INHERIT gtest_normal; -- error
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DROP TABLE gtest_normal, gtest_normal_child;
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-- test inheritance mismatches between parent and child
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CREATE TABLE gtestx (x int, b int DEFAULT 10) INHERITS (gtest1); -- error
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CREATE TABLE gtestx (x int, b int GENERATED ALWAYS AS IDENTITY) INHERITS (gtest1); -- error
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CREATE TABLE gtestx (x int, b int GENERATED ALWAYS AS (a * 22) STORED) INHERITS (gtest1); -- ok, overrides parent
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\d+ gtestx
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CREATE TABLE gtestxx_1 (a int NOT NULL, b int);
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ALTER TABLE gtestxx_1 INHERIT gtest1; -- error
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CREATE TABLE gtestxx_3 (a int NOT NULL, b int GENERATED ALWAYS AS (a * 2) STORED);
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ALTER TABLE gtestxx_3 INHERIT gtest1; -- ok
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CREATE TABLE gtestxx_4 (b int GENERATED ALWAYS AS (a * 2) STORED, a int NOT NULL);
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ALTER TABLE gtestxx_4 INHERIT gtest1; -- ok
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-- test multiple inheritance mismatches
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CREATE TABLE gtesty (x int, b int DEFAULT 55);
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CREATE TABLE gtest1_y () INHERITS (gtest0, gtesty); -- error
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DROP TABLE gtesty;
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CREATE TABLE gtesty (x int, b int);
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CREATE TABLE gtest1_y () INHERITS (gtest1, gtesty); -- error
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DROP TABLE gtesty;
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CREATE TABLE gtesty (x int, b int GENERATED ALWAYS AS (x * 22) STORED);
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CREATE TABLE gtest1_y () INHERITS (gtest1, gtesty); -- error
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CREATE TABLE gtest1_y (b int GENERATED ALWAYS AS (x + 1) STORED) INHERITS (gtest1, gtesty); -- ok
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\d gtest1_y
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-- test correct handling of GENERATED column that's only in child
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CREATE TABLE gtestp (f1 int);
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CREATE TABLE gtestc (f2 int GENERATED ALWAYS AS (f1+1) STORED) INHERITS(gtestp);
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INSERT INTO gtestc values(42);
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TABLE gtestc;
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UPDATE gtestp SET f1 = f1 * 10;
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TABLE gtestc;
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DROP TABLE gtestp CASCADE;
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-- test stored update
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CREATE TABLE gtest3 (a int, b int GENERATED ALWAYS AS (a * 3) STORED);
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INSERT INTO gtest3 (a) VALUES (1), (2), (3), (NULL);
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SELECT * FROM gtest3 ORDER BY a;
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UPDATE gtest3 SET a = 22 WHERE a = 2;
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SELECT * FROM gtest3 ORDER BY a;
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CREATE TABLE gtest3a (a text, b text GENERATED ALWAYS AS (a || '+' || a) STORED);
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INSERT INTO gtest3a (a) VALUES ('a'), ('b'), ('c'), (NULL);
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SELECT * FROM gtest3a ORDER BY a;
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UPDATE gtest3a SET a = 'bb' WHERE a = 'b';
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SELECT * FROM gtest3a ORDER BY a;
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-- COPY
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TRUNCATE gtest1;
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INSERT INTO gtest1 (a) VALUES (1), (2);
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COPY gtest1 TO stdout;
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COPY gtest1 (a, b) TO stdout;
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COPY gtest1 FROM stdin;
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3
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4
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\.
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COPY gtest1 (a, b) FROM stdin;
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SELECT * FROM gtest1 ORDER BY a;
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TRUNCATE gtest3;
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INSERT INTO gtest3 (a) VALUES (1), (2);
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COPY gtest3 TO stdout;
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COPY gtest3 (a, b) TO stdout;
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COPY gtest3 FROM stdin;
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3
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4
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\.
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COPY gtest3 (a, b) FROM stdin;
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SELECT * FROM gtest3 ORDER BY a;
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-- null values
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CREATE TABLE gtest2 (a int PRIMARY KEY, b int GENERATED ALWAYS AS (NULL) STORED);
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INSERT INTO gtest2 VALUES (1);
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SELECT * FROM gtest2;
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-- simple column reference for varlena types
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CREATE TABLE gtest_varlena (a varchar, b varchar GENERATED ALWAYS AS (a) STORED);
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INSERT INTO gtest_varlena (a) VALUES('01234567890123456789');
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INSERT INTO gtest_varlena (a) VALUES(NULL);
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SELECT * FROM gtest_varlena ORDER BY a;
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DROP TABLE gtest_varlena;
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-- composite types
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CREATE TYPE double_int as (a int, b int);
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CREATE TABLE gtest4 (
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a int,
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b double_int GENERATED ALWAYS AS ((a * 2, a * 3)) STORED
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);
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INSERT INTO gtest4 VALUES (1), (6);
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SELECT * FROM gtest4;
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DROP TABLE gtest4;
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DROP TYPE double_int;
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-- using tableoid is allowed
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CREATE TABLE gtest_tableoid (
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a int PRIMARY KEY,
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b bool GENERATED ALWAYS AS (tableoid = 'gtest_tableoid'::regclass) STORED
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);
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INSERT INTO gtest_tableoid VALUES (1), (2);
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ALTER TABLE gtest_tableoid ADD COLUMN
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c regclass GENERATED ALWAYS AS (tableoid) STORED;
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SELECT * FROM gtest_tableoid;
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-- drop column behavior
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CREATE TABLE gtest10 (a int PRIMARY KEY, b int, c int GENERATED ALWAYS AS (b * 2) STORED);
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ALTER TABLE gtest10 DROP COLUMN b; -- fails
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ALTER TABLE gtest10 DROP COLUMN b CASCADE; -- drops c too
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\d gtest10
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CREATE TABLE gtest10a (a int PRIMARY KEY, b int GENERATED ALWAYS AS (a * 2) STORED);
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ALTER TABLE gtest10a DROP COLUMN b;
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INSERT INTO gtest10a (a) VALUES (1);
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-- privileges
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CREATE USER regress_user11;
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CREATE TABLE gtest11s (a int PRIMARY KEY, b int, c int GENERATED ALWAYS AS (b * 2) STORED);
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INSERT INTO gtest11s VALUES (1, 10), (2, 20);
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GRANT SELECT (a, c) ON gtest11s TO regress_user11;
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CREATE FUNCTION gf1(a int) RETURNS int AS $$ SELECT a * 3 $$ IMMUTABLE LANGUAGE SQL;
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REVOKE ALL ON FUNCTION gf1(int) FROM PUBLIC;
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CREATE TABLE gtest12s (a int PRIMARY KEY, b int, c int GENERATED ALWAYS AS (gf1(b)) STORED);
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INSERT INTO gtest12s VALUES (1, 10), (2, 20);
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GRANT SELECT (a, c) ON gtest12s TO regress_user11;
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SET ROLE regress_user11;
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SELECT a, b FROM gtest11s; -- not allowed
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SELECT a, c FROM gtest11s; -- allowed
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SELECT gf1(10); -- not allowed
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SELECT a, c FROM gtest12s; -- allowed
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RESET ROLE;
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DROP FUNCTION gf1(int); -- fail
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DROP TABLE gtest11s, gtest12s;
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DROP FUNCTION gf1(int);
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DROP USER regress_user11;
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-- check constraints
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CREATE TABLE gtest20 (a int PRIMARY KEY, b int GENERATED ALWAYS AS (a * 2) STORED CHECK (b < 50));
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INSERT INTO gtest20 (a) VALUES (10); -- ok
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INSERT INTO gtest20 (a) VALUES (30); -- violates constraint
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ALTER TABLE gtest20 ALTER COLUMN b SET EXPRESSION AS (a * 100); -- violates constraint
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ALTER TABLE gtest20 ALTER COLUMN b SET EXPRESSION AS (a * 3); -- ok
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CREATE TABLE gtest20a (a int PRIMARY KEY, b int GENERATED ALWAYS AS (a * 2) STORED);
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INSERT INTO gtest20a (a) VALUES (10);
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INSERT INTO gtest20a (a) VALUES (30);
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ALTER TABLE gtest20a ADD CHECK (b < 50); -- fails on existing row
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CREATE TABLE gtest20b (a int PRIMARY KEY, b int GENERATED ALWAYS AS (a * 2) STORED);
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INSERT INTO gtest20b (a) VALUES (10);
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INSERT INTO gtest20b (a) VALUES (30);
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ALTER TABLE gtest20b ADD CONSTRAINT chk CHECK (b < 50) NOT VALID;
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ALTER TABLE gtest20b VALIDATE CONSTRAINT chk; -- fails on existing row
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-- not-null constraints
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CREATE TABLE gtest21a (a int PRIMARY KEY, b int GENERATED ALWAYS AS (nullif(a, 0)) STORED NOT NULL);
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INSERT INTO gtest21a (a) VALUES (1); -- ok
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INSERT INTO gtest21a (a) VALUES (0); -- violates constraint
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CREATE TABLE gtest21b (a int PRIMARY KEY, b int GENERATED ALWAYS AS (nullif(a, 0)) STORED);
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ALTER TABLE gtest21b ALTER COLUMN b SET NOT NULL;
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INSERT INTO gtest21b (a) VALUES (1); -- ok
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INSERT INTO gtest21b (a) VALUES (0); -- violates constraint
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ALTER TABLE gtest21b ALTER COLUMN b DROP NOT NULL;
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INSERT INTO gtest21b (a) VALUES (0); -- ok now
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-- index constraints
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CREATE TABLE gtest22a (a int PRIMARY KEY, b int GENERATED ALWAYS AS (a / 2) STORED UNIQUE);
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INSERT INTO gtest22a VALUES (2);
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INSERT INTO gtest22a VALUES (3);
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INSERT INTO gtest22a VALUES (4);
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CREATE TABLE gtest22b (a int, b int GENERATED ALWAYS AS (a / 2) STORED, PRIMARY KEY (a, b));
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INSERT INTO gtest22b VALUES (2);
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INSERT INTO gtest22b VALUES (2);
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-- indexes
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CREATE TABLE gtest22c (a int, b int GENERATED ALWAYS AS (a * 2) STORED);
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CREATE INDEX gtest22c_b_idx ON gtest22c (b);
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CREATE INDEX gtest22c_expr_idx ON gtest22c ((b * 3));
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CREATE INDEX gtest22c_pred_idx ON gtest22c (a) WHERE b > 0;
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\d gtest22c
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INSERT INTO gtest22c VALUES (1), (2), (3);
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SET enable_seqscan TO off;
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SET enable_bitmapscan TO off;
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EXPLAIN (COSTS OFF) SELECT * FROM gtest22c WHERE b = 4;
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SELECT * FROM gtest22c WHERE b = 4;
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EXPLAIN (COSTS OFF) SELECT * FROM gtest22c WHERE b * 3 = 6;
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SELECT * FROM gtest22c WHERE b * 3 = 6;
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EXPLAIN (COSTS OFF) SELECT * FROM gtest22c WHERE a = 1 AND b > 0;
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SELECT * FROM gtest22c WHERE a = 1 AND b > 0;
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ALTER TABLE gtest22c ALTER COLUMN b SET EXPRESSION AS (a * 4);
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ANALYZE gtest22c;
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EXPLAIN (COSTS OFF) SELECT * FROM gtest22c WHERE b = 8;
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SELECT * FROM gtest22c WHERE b = 8;
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EXPLAIN (COSTS OFF) SELECT * FROM gtest22c WHERE b * 3 = 12;
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SELECT * FROM gtest22c WHERE b * 3 = 12;
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EXPLAIN (COSTS OFF) SELECT * FROM gtest22c WHERE a = 1 AND b > 0;
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SELECT * FROM gtest22c WHERE a = 1 AND b > 0;
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RESET enable_seqscan;
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RESET enable_bitmapscan;
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-- foreign keys
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CREATE TABLE gtest23a (x int PRIMARY KEY, y int);
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INSERT INTO gtest23a VALUES (1, 11), (2, 22), (3, 33);
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CREATE TABLE gtest23x (a int PRIMARY KEY, b int GENERATED ALWAYS AS (a * 2) STORED REFERENCES gtest23a (x) ON UPDATE CASCADE); -- error
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CREATE TABLE gtest23x (a int PRIMARY KEY, b int GENERATED ALWAYS AS (a * 2) STORED REFERENCES gtest23a (x) ON DELETE SET NULL); -- error
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CREATE TABLE gtest23b (a int PRIMARY KEY, b int GENERATED ALWAYS AS (a * 2) STORED REFERENCES gtest23a (x));
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\d gtest23b
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INSERT INTO gtest23b VALUES (1); -- ok
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INSERT INTO gtest23b VALUES (5); -- error
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ALTER TABLE gtest23b ALTER COLUMN b SET EXPRESSION AS (a * 5); -- error
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ALTER TABLE gtest23b ALTER COLUMN b SET EXPRESSION AS (a * 1); -- ok
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DROP TABLE gtest23b;
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DROP TABLE gtest23a;
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CREATE TABLE gtest23p (x int, y int GENERATED ALWAYS AS (x * 2) STORED, PRIMARY KEY (y));
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INSERT INTO gtest23p VALUES (1), (2), (3);
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CREATE TABLE gtest23q (a int PRIMARY KEY, b int REFERENCES gtest23p (y));
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INSERT INTO gtest23q VALUES (1, 2); -- ok
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INSERT INTO gtest23q VALUES (2, 5); -- error
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-- domains
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CREATE DOMAIN gtestdomain1 AS int CHECK (VALUE < 10);
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CREATE TABLE gtest24 (a int PRIMARY KEY, b gtestdomain1 GENERATED ALWAYS AS (a * 2) STORED);
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INSERT INTO gtest24 (a) VALUES (4); -- ok
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INSERT INTO gtest24 (a) VALUES (6); -- error
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-- typed tables (currently not supported)
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CREATE TYPE gtest_type AS (f1 integer, f2 text, f3 bigint);
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CREATE TABLE gtest28 OF gtest_type (f1 WITH OPTIONS GENERATED ALWAYS AS (f2 *2) STORED);
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DROP TYPE gtest_type CASCADE;
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-- partitioning cases
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CREATE TABLE gtest_parent (f1 date NOT NULL, f2 bigint, f3 bigint) PARTITION BY RANGE (f1);
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CREATE TABLE gtest_child PARTITION OF gtest_parent (
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f3 WITH OPTIONS GENERATED ALWAYS AS (f2 * 2) STORED
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) FOR VALUES FROM ('2016-07-01') TO ('2016-08-01'); -- error
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CREATE TABLE gtest_child (f1 date NOT NULL, f2 bigint, f3 bigint GENERATED ALWAYS AS (f2 * 2) STORED);
|
|
ALTER TABLE gtest_parent ATTACH PARTITION gtest_child FOR VALUES FROM ('2016-07-01') TO ('2016-08-01'); -- error
|
|
DROP TABLE gtest_parent, gtest_child;
|
|
|
|
CREATE TABLE gtest_parent (f1 date NOT NULL, f2 bigint, f3 bigint GENERATED ALWAYS AS (f2 * 2) STORED) PARTITION BY RANGE (f1);
|
|
CREATE TABLE gtest_child PARTITION OF gtest_parent
|
|
FOR VALUES FROM ('2016-07-01') TO ('2016-08-01'); -- inherits gen expr
|
|
CREATE TABLE gtest_child2 PARTITION OF gtest_parent (
|
|
f3 WITH OPTIONS GENERATED ALWAYS AS (f2 * 22) STORED -- overrides gen expr
|
|
) FOR VALUES FROM ('2016-08-01') TO ('2016-09-01');
|
|
CREATE TABLE gtest_child3 PARTITION OF gtest_parent (
|
|
f3 DEFAULT 42 -- error
|
|
) FOR VALUES FROM ('2016-09-01') TO ('2016-10-01');
|
|
CREATE TABLE gtest_child3 PARTITION OF gtest_parent (
|
|
f3 WITH OPTIONS GENERATED ALWAYS AS IDENTITY -- error
|
|
) FOR VALUES FROM ('2016-09-01') TO ('2016-10-01');
|
|
CREATE TABLE gtest_child3 (f1 date NOT NULL, f2 bigint, f3 bigint);
|
|
ALTER TABLE gtest_parent ATTACH PARTITION gtest_child3 FOR VALUES FROM ('2016-09-01') TO ('2016-10-01'); -- error
|
|
DROP TABLE gtest_child3;
|
|
CREATE TABLE gtest_child3 (f1 date NOT NULL, f2 bigint, f3 bigint DEFAULT 42);
|
|
ALTER TABLE gtest_parent ATTACH PARTITION gtest_child3 FOR VALUES FROM ('2016-09-01') TO ('2016-10-01'); -- error
|
|
DROP TABLE gtest_child3;
|
|
CREATE TABLE gtest_child3 (f1 date NOT NULL, f2 bigint, f3 bigint GENERATED ALWAYS AS IDENTITY);
|
|
ALTER TABLE gtest_parent ATTACH PARTITION gtest_child3 FOR VALUES FROM ('2016-09-01') TO ('2016-10-01'); -- error
|
|
DROP TABLE gtest_child3;
|
|
CREATE TABLE gtest_child3 (f1 date NOT NULL, f2 bigint, f3 bigint GENERATED ALWAYS AS (f2 * 33) STORED);
|
|
ALTER TABLE gtest_parent ATTACH PARTITION gtest_child3 FOR VALUES FROM ('2016-09-01') TO ('2016-10-01');
|
|
\d gtest_child
|
|
\d gtest_child2
|
|
\d gtest_child3
|
|
INSERT INTO gtest_parent (f1, f2) VALUES ('2016-07-15', 1);
|
|
INSERT INTO gtest_parent (f1, f2) VALUES ('2016-07-15', 2);
|
|
INSERT INTO gtest_parent (f1, f2) VALUES ('2016-08-15', 3);
|
|
SELECT tableoid::regclass, * FROM gtest_parent ORDER BY 1, 2, 3;
|
|
UPDATE gtest_parent SET f1 = f1 + 60 WHERE f2 = 1;
|
|
SELECT tableoid::regclass, * FROM gtest_parent ORDER BY 1, 2, 3;
|
|
|
|
-- alter only parent's and one child's generation expression
|
|
ALTER TABLE ONLY gtest_parent ALTER COLUMN f3 SET EXPRESSION AS (f2 * 4);
|
|
ALTER TABLE gtest_child ALTER COLUMN f3 SET EXPRESSION AS (f2 * 10);
|
|
\d gtest_parent
|
|
\d gtest_child
|
|
\d gtest_child2
|
|
\d gtest_child3
|
|
SELECT tableoid::regclass, * FROM gtest_parent ORDER BY 1, 2, 3;
|
|
|
|
-- alter generation expression of parent and all its children altogether
|
|
ALTER TABLE gtest_parent ALTER COLUMN f3 SET EXPRESSION AS (f2 * 2);
|
|
\d gtest_parent
|
|
\d gtest_child
|
|
\d gtest_child2
|
|
\d gtest_child3
|
|
SELECT tableoid::regclass, * FROM gtest_parent ORDER BY 1, 2, 3;
|
|
-- we leave these tables around for purposes of testing dump/reload/upgrade
|
|
|
|
-- generated columns in partition key (not allowed)
|
|
CREATE TABLE gtest_part_key (f1 date NOT NULL, f2 bigint, f3 bigint GENERATED ALWAYS AS (f2 * 2) STORED) PARTITION BY RANGE (f3);
|
|
CREATE TABLE gtest_part_key (f1 date NOT NULL, f2 bigint, f3 bigint GENERATED ALWAYS AS (f2 * 2) STORED) PARTITION BY RANGE ((f3 * 3));
|
|
|
|
-- ALTER TABLE ... ADD COLUMN
|
|
CREATE TABLE gtest25 (a int PRIMARY KEY);
|
|
INSERT INTO gtest25 VALUES (3), (4);
|
|
ALTER TABLE gtest25 ADD COLUMN b int GENERATED ALWAYS AS (a * 2) STORED, ALTER COLUMN b SET EXPRESSION AS (a * 3);
|
|
SELECT * FROM gtest25 ORDER BY a;
|
|
ALTER TABLE gtest25 ADD COLUMN x int GENERATED ALWAYS AS (b * 4) STORED; -- error
|
|
ALTER TABLE gtest25 ADD COLUMN x int GENERATED ALWAYS AS (z * 4) STORED; -- error
|
|
ALTER TABLE gtest25 ADD COLUMN c int DEFAULT 42,
|
|
ADD COLUMN x int GENERATED ALWAYS AS (c * 4) STORED;
|
|
ALTER TABLE gtest25 ADD COLUMN d int DEFAULT 101;
|
|
ALTER TABLE gtest25 ALTER COLUMN d SET DATA TYPE float8,
|
|
ADD COLUMN y float8 GENERATED ALWAYS AS (d * 4) STORED;
|
|
SELECT * FROM gtest25 ORDER BY a;
|
|
\d gtest25
|
|
|
|
-- ALTER TABLE ... ALTER COLUMN
|
|
CREATE TABLE gtest27 (
|
|
a int,
|
|
b int,
|
|
x int GENERATED ALWAYS AS ((a + b) * 2) STORED
|
|
);
|
|
INSERT INTO gtest27 (a, b) VALUES (3, 7), (4, 11);
|
|
ALTER TABLE gtest27 ALTER COLUMN a TYPE text; -- error
|
|
ALTER TABLE gtest27 ALTER COLUMN x TYPE numeric;
|
|
\d gtest27
|
|
SELECT * FROM gtest27;
|
|
ALTER TABLE gtest27 ALTER COLUMN x TYPE boolean USING x <> 0; -- error
|
|
ALTER TABLE gtest27 ALTER COLUMN x DROP DEFAULT; -- error
|
|
-- It's possible to alter the column types this way:
|
|
ALTER TABLE gtest27
|
|
DROP COLUMN x,
|
|
ALTER COLUMN a TYPE bigint,
|
|
ALTER COLUMN b TYPE bigint,
|
|
ADD COLUMN x bigint GENERATED ALWAYS AS ((a + b) * 2) STORED;
|
|
\d gtest27
|
|
-- Ideally you could just do this, but not today (and should x change type?):
|
|
ALTER TABLE gtest27
|
|
ALTER COLUMN a TYPE float8,
|
|
ALTER COLUMN b TYPE float8; -- error
|
|
\d gtest27
|
|
SELECT * FROM gtest27;
|
|
|
|
-- ALTER TABLE ... ALTER COLUMN ... DROP EXPRESSION
|
|
CREATE TABLE gtest29 (
|
|
a int,
|
|
b int GENERATED ALWAYS AS (a * 2) STORED
|
|
);
|
|
INSERT INTO gtest29 (a) VALUES (3), (4);
|
|
SELECT * FROM gtest29;
|
|
\d gtest29
|
|
ALTER TABLE gtest29 ALTER COLUMN a SET EXPRESSION AS (a * 3); -- error
|
|
ALTER TABLE gtest29 ALTER COLUMN a DROP EXPRESSION; -- error
|
|
ALTER TABLE gtest29 ALTER COLUMN a DROP EXPRESSION IF EXISTS; -- notice
|
|
|
|
-- Change the expression
|
|
ALTER TABLE gtest29 ALTER COLUMN b SET EXPRESSION AS (a * 3);
|
|
SELECT * FROM gtest29;
|
|
\d gtest29
|
|
|
|
ALTER TABLE gtest29 ALTER COLUMN b DROP EXPRESSION;
|
|
INSERT INTO gtest29 (a) VALUES (5);
|
|
INSERT INTO gtest29 (a, b) VALUES (6, 66);
|
|
SELECT * FROM gtest29;
|
|
\d gtest29
|
|
|
|
-- check that dependencies between columns have also been removed
|
|
ALTER TABLE gtest29 DROP COLUMN a; -- should not drop b
|
|
\d gtest29
|
|
|
|
-- with inheritance
|
|
CREATE TABLE gtest30 (
|
|
a int,
|
|
b int GENERATED ALWAYS AS (a * 2) STORED
|
|
);
|
|
CREATE TABLE gtest30_1 () INHERITS (gtest30);
|
|
ALTER TABLE gtest30 ALTER COLUMN b DROP EXPRESSION;
|
|
\d gtest30
|
|
\d gtest30_1
|
|
DROP TABLE gtest30 CASCADE;
|
|
CREATE TABLE gtest30 (
|
|
a int,
|
|
b int GENERATED ALWAYS AS (a * 2) STORED
|
|
);
|
|
CREATE TABLE gtest30_1 () INHERITS (gtest30);
|
|
ALTER TABLE ONLY gtest30 ALTER COLUMN b DROP EXPRESSION; -- error
|
|
\d gtest30
|
|
\d gtest30_1
|
|
ALTER TABLE gtest30_1 ALTER COLUMN b DROP EXPRESSION; -- error
|
|
|
|
-- triggers
|
|
CREATE TABLE gtest26 (
|
|
a int PRIMARY KEY,
|
|
b int GENERATED ALWAYS AS (a * 2) STORED
|
|
);
|
|
|
|
CREATE FUNCTION gtest_trigger_func() RETURNS trigger
|
|
LANGUAGE plpgsql
|
|
AS $$
|
|
BEGIN
|
|
IF tg_op IN ('DELETE', 'UPDATE') THEN
|
|
RAISE INFO '%: %: old = %', TG_NAME, TG_WHEN, OLD;
|
|
END IF;
|
|
IF tg_op IN ('INSERT', 'UPDATE') THEN
|
|
RAISE INFO '%: %: new = %', TG_NAME, TG_WHEN, NEW;
|
|
END IF;
|
|
IF tg_op = 'DELETE' THEN
|
|
RETURN OLD;
|
|
ELSE
|
|
RETURN NEW;
|
|
END IF;
|
|
END
|
|
$$;
|
|
|
|
CREATE TRIGGER gtest1 BEFORE DELETE OR UPDATE ON gtest26
|
|
FOR EACH ROW
|
|
WHEN (OLD.b < 0) -- ok
|
|
EXECUTE PROCEDURE gtest_trigger_func();
|
|
|
|
CREATE TRIGGER gtest2a BEFORE INSERT OR UPDATE ON gtest26
|
|
FOR EACH ROW
|
|
WHEN (NEW.b < 0) -- error
|
|
EXECUTE PROCEDURE gtest_trigger_func();
|
|
|
|
CREATE TRIGGER gtest2b BEFORE INSERT OR UPDATE ON gtest26
|
|
FOR EACH ROW
|
|
WHEN (NEW.* IS NOT NULL) -- error
|
|
EXECUTE PROCEDURE gtest_trigger_func();
|
|
|
|
CREATE TRIGGER gtest2 BEFORE INSERT ON gtest26
|
|
FOR EACH ROW
|
|
WHEN (NEW.a < 0)
|
|
EXECUTE PROCEDURE gtest_trigger_func();
|
|
|
|
CREATE TRIGGER gtest3 AFTER DELETE OR UPDATE ON gtest26
|
|
FOR EACH ROW
|
|
WHEN (OLD.b < 0) -- ok
|
|
EXECUTE PROCEDURE gtest_trigger_func();
|
|
|
|
CREATE TRIGGER gtest4 AFTER INSERT OR UPDATE ON gtest26
|
|
FOR EACH ROW
|
|
WHEN (NEW.b < 0) -- ok
|
|
EXECUTE PROCEDURE gtest_trigger_func();
|
|
|
|
INSERT INTO gtest26 (a) VALUES (-2), (0), (3);
|
|
SELECT * FROM gtest26 ORDER BY a;
|
|
UPDATE gtest26 SET a = a * -2;
|
|
SELECT * FROM gtest26 ORDER BY a;
|
|
DELETE FROM gtest26 WHERE a = -6;
|
|
SELECT * FROM gtest26 ORDER BY a;
|
|
|
|
DROP TRIGGER gtest1 ON gtest26;
|
|
DROP TRIGGER gtest2 ON gtest26;
|
|
DROP TRIGGER gtest3 ON gtest26;
|
|
|
|
-- Check that an UPDATE of "a" fires the trigger for UPDATE OF b, per
|
|
-- SQL standard.
|
|
CREATE FUNCTION gtest_trigger_func3() RETURNS trigger
|
|
LANGUAGE plpgsql
|
|
AS $$
|
|
BEGIN
|
|
RAISE NOTICE 'OK';
|
|
RETURN NEW;
|
|
END
|
|
$$;
|
|
|
|
CREATE TRIGGER gtest11 BEFORE UPDATE OF b ON gtest26
|
|
FOR EACH ROW
|
|
EXECUTE PROCEDURE gtest_trigger_func3();
|
|
|
|
UPDATE gtest26 SET a = 1 WHERE a = 0;
|
|
|
|
DROP TRIGGER gtest11 ON gtest26;
|
|
TRUNCATE gtest26;
|
|
|
|
-- check that modifications of stored generated columns in triggers do
|
|
-- not get propagated
|
|
CREATE FUNCTION gtest_trigger_func4() RETURNS trigger
|
|
LANGUAGE plpgsql
|
|
AS $$
|
|
BEGIN
|
|
NEW.a = 10;
|
|
NEW.b = 300;
|
|
RETURN NEW;
|
|
END;
|
|
$$;
|
|
|
|
CREATE TRIGGER gtest12_01 BEFORE UPDATE ON gtest26
|
|
FOR EACH ROW
|
|
EXECUTE PROCEDURE gtest_trigger_func();
|
|
|
|
CREATE TRIGGER gtest12_02 BEFORE UPDATE ON gtest26
|
|
FOR EACH ROW
|
|
EXECUTE PROCEDURE gtest_trigger_func4();
|
|
|
|
CREATE TRIGGER gtest12_03 BEFORE UPDATE ON gtest26
|
|
FOR EACH ROW
|
|
EXECUTE PROCEDURE gtest_trigger_func();
|
|
|
|
INSERT INTO gtest26 (a) VALUES (1);
|
|
UPDATE gtest26 SET a = 11 WHERE a = 1;
|
|
SELECT * FROM gtest26 ORDER BY a;
|
|
|
|
-- LIKE INCLUDING GENERATED and dropped column handling
|
|
CREATE TABLE gtest28a (
|
|
a int,
|
|
b int,
|
|
c int,
|
|
x int GENERATED ALWAYS AS (b * 2) STORED
|
|
);
|
|
|
|
ALTER TABLE gtest28a DROP COLUMN a;
|
|
|
|
CREATE TABLE gtest28b (LIKE gtest28a INCLUDING GENERATED);
|
|
|
|
\d gtest28*
|