mirror of
https://git.postgresql.org/git/postgresql.git
synced 2024-09-28 12:11:50 +02:00
0a4efdc7eb
The fast default code added in Release 11 omitted to check that the table a fast default was being added to was a plain table. Thus one could be added to a foreign table, which predicably blows up. Here we perform that check. In addition, on the back branches, since some of these might have escaped into the wild, if we encounter a missing value for an attribute of something other than a plain table we ignore it. Fixes bug #17056 Backpatch to release 11, Reviewed by: Andres Freund, Álvaro Herrera and Tom Lane
563 lines
16 KiB
PL/PgSQL
563 lines
16 KiB
PL/PgSQL
--
|
|
-- ALTER TABLE ADD COLUMN DEFAULT test
|
|
--
|
|
|
|
SET search_path = fast_default;
|
|
CREATE SCHEMA fast_default;
|
|
CREATE TABLE m(id OID);
|
|
INSERT INTO m VALUES (NULL::OID);
|
|
|
|
CREATE FUNCTION set(tabname name) RETURNS VOID
|
|
AS $$
|
|
BEGIN
|
|
UPDATE m
|
|
SET id = (SELECT c.relfilenode
|
|
FROM pg_class AS c, pg_namespace AS s
|
|
WHERE c.relname = tabname
|
|
AND c.relnamespace = s.oid
|
|
AND s.nspname = 'fast_default');
|
|
END;
|
|
$$ LANGUAGE 'plpgsql';
|
|
|
|
CREATE FUNCTION comp() RETURNS TEXT
|
|
AS $$
|
|
BEGIN
|
|
RETURN (SELECT CASE
|
|
WHEN m.id = c.relfilenode THEN 'Unchanged'
|
|
ELSE 'Rewritten'
|
|
END
|
|
FROM m, pg_class AS c, pg_namespace AS s
|
|
WHERE c.relname = 't'
|
|
AND c.relnamespace = s.oid
|
|
AND s.nspname = 'fast_default');
|
|
END;
|
|
$$ LANGUAGE 'plpgsql';
|
|
|
|
CREATE FUNCTION log_rewrite() RETURNS event_trigger
|
|
LANGUAGE plpgsql as
|
|
$func$
|
|
|
|
declare
|
|
this_schema text;
|
|
begin
|
|
select into this_schema relnamespace::regnamespace::text
|
|
from pg_class
|
|
where oid = pg_event_trigger_table_rewrite_oid();
|
|
if this_schema = 'fast_default'
|
|
then
|
|
RAISE NOTICE 'rewriting table % for reason %',
|
|
pg_event_trigger_table_rewrite_oid()::regclass,
|
|
pg_event_trigger_table_rewrite_reason();
|
|
end if;
|
|
end;
|
|
$func$;
|
|
|
|
CREATE TABLE has_volatile AS
|
|
SELECT * FROM generate_series(1,10) id;
|
|
|
|
|
|
CREATE EVENT TRIGGER has_volatile_rewrite
|
|
ON table_rewrite
|
|
EXECUTE PROCEDURE log_rewrite();
|
|
|
|
-- only the last of these should trigger a rewrite
|
|
ALTER TABLE has_volatile ADD col1 int;
|
|
ALTER TABLE has_volatile ADD col2 int DEFAULT 1;
|
|
ALTER TABLE has_volatile ADD col3 timestamptz DEFAULT current_timestamp;
|
|
ALTER TABLE has_volatile ADD col4 int DEFAULT (random() * 10000)::int;
|
|
|
|
|
|
|
|
-- Test a large sample of different datatypes
|
|
CREATE TABLE T(pk INT NOT NULL PRIMARY KEY, c_int INT DEFAULT 1);
|
|
|
|
SELECT set('t');
|
|
|
|
INSERT INTO T VALUES (1), (2);
|
|
|
|
ALTER TABLE T ADD COLUMN c_bpchar BPCHAR(5) DEFAULT 'hello',
|
|
ALTER COLUMN c_int SET DEFAULT 2;
|
|
|
|
INSERT INTO T VALUES (3), (4);
|
|
|
|
|
|
ALTER TABLE T ADD COLUMN c_text TEXT DEFAULT 'world',
|
|
ALTER COLUMN c_bpchar SET DEFAULT 'dog';
|
|
|
|
INSERT INTO T VALUES (5), (6);
|
|
|
|
ALTER TABLE T ADD COLUMN c_date DATE DEFAULT '2016-06-02',
|
|
ALTER COLUMN c_text SET DEFAULT 'cat';
|
|
|
|
INSERT INTO T VALUES (7), (8);
|
|
|
|
ALTER TABLE T ADD COLUMN c_timestamp TIMESTAMP DEFAULT '2016-09-01 12:00:00',
|
|
ADD COLUMN c_timestamp_null TIMESTAMP,
|
|
ALTER COLUMN c_date SET DEFAULT '2010-01-01';
|
|
|
|
INSERT INTO T VALUES (9), (10);
|
|
|
|
ALTER TABLE T ADD COLUMN c_array TEXT[]
|
|
DEFAULT '{"This", "is", "the", "real", "world"}',
|
|
ALTER COLUMN c_timestamp SET DEFAULT '1970-12-31 11:12:13',
|
|
ALTER COLUMN c_timestamp_null SET DEFAULT '2016-09-29 12:00:00';
|
|
|
|
INSERT INTO T VALUES (11), (12);
|
|
|
|
ALTER TABLE T ADD COLUMN c_small SMALLINT DEFAULT -5,
|
|
ADD COLUMN c_small_null SMALLINT,
|
|
ALTER COLUMN c_array
|
|
SET DEFAULT '{"This", "is", "no", "fantasy"}';
|
|
|
|
INSERT INTO T VALUES (13), (14);
|
|
|
|
ALTER TABLE T ADD COLUMN c_big BIGINT DEFAULT 180000000000018,
|
|
ALTER COLUMN c_small SET DEFAULT 9,
|
|
ALTER COLUMN c_small_null SET DEFAULT 13;
|
|
|
|
INSERT INTO T VALUES (15), (16);
|
|
|
|
ALTER TABLE T ADD COLUMN c_num NUMERIC DEFAULT 1.00000000001,
|
|
ALTER COLUMN c_big SET DEFAULT -9999999999999999;
|
|
|
|
INSERT INTO T VALUES (17), (18);
|
|
|
|
ALTER TABLE T ADD COLUMN c_time TIME DEFAULT '12:00:00',
|
|
ALTER COLUMN c_num SET DEFAULT 2.000000000000002;
|
|
|
|
INSERT INTO T VALUES (19), (20);
|
|
|
|
ALTER TABLE T ADD COLUMN c_interval INTERVAL DEFAULT '1 day',
|
|
ALTER COLUMN c_time SET DEFAULT '23:59:59';
|
|
|
|
INSERT INTO T VALUES (21), (22);
|
|
|
|
ALTER TABLE T ADD COLUMN c_hugetext TEXT DEFAULT repeat('abcdefg',1000),
|
|
ALTER COLUMN c_interval SET DEFAULT '3 hours';
|
|
|
|
INSERT INTO T VALUES (23), (24);
|
|
|
|
ALTER TABLE T ALTER COLUMN c_interval DROP DEFAULT,
|
|
ALTER COLUMN c_hugetext SET DEFAULT repeat('poiuyt', 1000);
|
|
|
|
INSERT INTO T VALUES (25), (26);
|
|
|
|
ALTER TABLE T ALTER COLUMN c_bpchar DROP DEFAULT,
|
|
ALTER COLUMN c_date DROP DEFAULT,
|
|
ALTER COLUMN c_text DROP DEFAULT,
|
|
ALTER COLUMN c_timestamp DROP DEFAULT,
|
|
ALTER COLUMN c_array DROP DEFAULT,
|
|
ALTER COLUMN c_small DROP DEFAULT,
|
|
ALTER COLUMN c_big DROP DEFAULT,
|
|
ALTER COLUMN c_num DROP DEFAULT,
|
|
ALTER COLUMN c_time DROP DEFAULT,
|
|
ALTER COLUMN c_hugetext DROP DEFAULT;
|
|
|
|
INSERT INTO T VALUES (27), (28);
|
|
|
|
SELECT pk, c_int, c_bpchar, c_text, c_date, c_timestamp,
|
|
c_timestamp_null, c_array, c_small, c_small_null,
|
|
c_big, c_num, c_time, c_interval,
|
|
c_hugetext = repeat('abcdefg',1000) as c_hugetext_origdef,
|
|
c_hugetext = repeat('poiuyt', 1000) as c_hugetext_newdef
|
|
FROM T ORDER BY pk;
|
|
|
|
SELECT comp();
|
|
|
|
DROP TABLE T;
|
|
|
|
-- Test expressions in the defaults
|
|
CREATE OR REPLACE FUNCTION foo(a INT) RETURNS TEXT AS $$
|
|
DECLARE res TEXT := '';
|
|
i INT;
|
|
BEGIN
|
|
i := 0;
|
|
WHILE (i < a) LOOP
|
|
res := res || chr(ascii('a') + i);
|
|
i := i + 1;
|
|
END LOOP;
|
|
RETURN res;
|
|
END; $$ LANGUAGE PLPGSQL STABLE;
|
|
|
|
CREATE TABLE T(pk INT NOT NULL PRIMARY KEY, c_int INT DEFAULT LENGTH(foo(6)));
|
|
|
|
SELECT set('t');
|
|
|
|
INSERT INTO T VALUES (1), (2);
|
|
|
|
ALTER TABLE T ADD COLUMN c_bpchar BPCHAR(5) DEFAULT foo(4),
|
|
ALTER COLUMN c_int SET DEFAULT LENGTH(foo(8));
|
|
|
|
INSERT INTO T VALUES (3), (4);
|
|
|
|
ALTER TABLE T ADD COLUMN c_text TEXT DEFAULT foo(6),
|
|
ALTER COLUMN c_bpchar SET DEFAULT foo(3);
|
|
|
|
INSERT INTO T VALUES (5), (6);
|
|
|
|
ALTER TABLE T ADD COLUMN c_date DATE
|
|
DEFAULT '2016-06-02'::DATE + LENGTH(foo(10)),
|
|
ALTER COLUMN c_text SET DEFAULT foo(12);
|
|
|
|
INSERT INTO T VALUES (7), (8);
|
|
|
|
ALTER TABLE T ADD COLUMN c_timestamp TIMESTAMP
|
|
DEFAULT '2016-09-01'::DATE + LENGTH(foo(10)),
|
|
ALTER COLUMN c_date
|
|
SET DEFAULT '2010-01-01'::DATE - LENGTH(foo(4));
|
|
|
|
INSERT INTO T VALUES (9), (10);
|
|
|
|
ALTER TABLE T ADD COLUMN c_array TEXT[]
|
|
DEFAULT ('{"This", "is", "' || foo(4) ||
|
|
'","the", "real", "world"}')::TEXT[],
|
|
ALTER COLUMN c_timestamp
|
|
SET DEFAULT '1970-12-31'::DATE + LENGTH(foo(30));
|
|
|
|
INSERT INTO T VALUES (11), (12);
|
|
|
|
ALTER TABLE T ALTER COLUMN c_int DROP DEFAULT,
|
|
ALTER COLUMN c_array
|
|
SET DEFAULT ('{"This", "is", "' || foo(1) ||
|
|
'", "fantasy"}')::text[];
|
|
|
|
INSERT INTO T VALUES (13), (14);
|
|
|
|
ALTER TABLE T ALTER COLUMN c_bpchar DROP DEFAULT,
|
|
ALTER COLUMN c_date DROP DEFAULT,
|
|
ALTER COLUMN c_text DROP DEFAULT,
|
|
ALTER COLUMN c_timestamp DROP DEFAULT,
|
|
ALTER COLUMN c_array DROP DEFAULT;
|
|
|
|
INSERT INTO T VALUES (15), (16);
|
|
|
|
SELECT * FROM T;
|
|
|
|
SELECT comp();
|
|
|
|
DROP TABLE T;
|
|
|
|
DROP FUNCTION foo(INT);
|
|
|
|
-- Fall back to full rewrite for volatile expressions
|
|
CREATE TABLE T(pk INT NOT NULL PRIMARY KEY);
|
|
|
|
INSERT INTO T VALUES (1);
|
|
|
|
SELECT set('t');
|
|
|
|
-- now() is stable, because it returns the transaction timestamp
|
|
ALTER TABLE T ADD COLUMN c1 TIMESTAMP DEFAULT now();
|
|
|
|
SELECT comp();
|
|
|
|
-- clock_timestamp() is volatile
|
|
ALTER TABLE T ADD COLUMN c2 TIMESTAMP DEFAULT clock_timestamp();
|
|
|
|
SELECT comp();
|
|
|
|
DROP TABLE T;
|
|
|
|
-- Simple querie
|
|
CREATE TABLE T (pk INT NOT NULL PRIMARY KEY);
|
|
|
|
SELECT set('t');
|
|
|
|
INSERT INTO T SELECT * FROM generate_series(1, 10) a;
|
|
|
|
ALTER TABLE T ADD COLUMN c_bigint BIGINT NOT NULL DEFAULT -1;
|
|
|
|
INSERT INTO T SELECT b, b - 10 FROM generate_series(11, 20) a(b);
|
|
|
|
ALTER TABLE T ADD COLUMN c_text TEXT DEFAULT 'hello';
|
|
|
|
INSERT INTO T SELECT b, b - 10, (b + 10)::text FROM generate_series(21, 30) a(b);
|
|
|
|
-- WHERE clause
|
|
SELECT c_bigint, c_text FROM T WHERE c_bigint = -1 LIMIT 1;
|
|
|
|
EXPLAIN (VERBOSE TRUE, COSTS FALSE)
|
|
SELECT c_bigint, c_text FROM T WHERE c_bigint = -1 LIMIT 1;
|
|
|
|
SELECT c_bigint, c_text FROM T WHERE c_text = 'hello' LIMIT 1;
|
|
|
|
EXPLAIN (VERBOSE TRUE, COSTS FALSE) SELECT c_bigint, c_text FROM T WHERE c_text = 'hello' LIMIT 1;
|
|
|
|
|
|
-- COALESCE
|
|
SELECT COALESCE(c_bigint, pk), COALESCE(c_text, pk::text)
|
|
FROM T
|
|
ORDER BY pk LIMIT 10;
|
|
|
|
-- Aggregate function
|
|
SELECT SUM(c_bigint), MAX(c_text COLLATE "C" ), MIN(c_text COLLATE "C") FROM T;
|
|
|
|
-- ORDER BY
|
|
SELECT * FROM T ORDER BY c_bigint, c_text, pk LIMIT 10;
|
|
|
|
EXPLAIN (VERBOSE TRUE, COSTS FALSE)
|
|
SELECT * FROM T ORDER BY c_bigint, c_text, pk LIMIT 10;
|
|
|
|
-- LIMIT
|
|
SELECT * FROM T WHERE c_bigint > -1 ORDER BY c_bigint, c_text, pk LIMIT 10;
|
|
|
|
EXPLAIN (VERBOSE TRUE, COSTS FALSE)
|
|
SELECT * FROM T WHERE c_bigint > -1 ORDER BY c_bigint, c_text, pk LIMIT 10;
|
|
|
|
-- DELETE with RETURNING
|
|
DELETE FROM T WHERE pk BETWEEN 10 AND 20 RETURNING *;
|
|
EXPLAIN (VERBOSE TRUE, COSTS FALSE)
|
|
DELETE FROM T WHERE pk BETWEEN 10 AND 20 RETURNING *;
|
|
|
|
-- UPDATE
|
|
UPDATE T SET c_text = '"' || c_text || '"' WHERE pk < 10;
|
|
SELECT * FROM T WHERE c_text LIKE '"%"' ORDER BY PK;
|
|
|
|
SELECT comp();
|
|
|
|
DROP TABLE T;
|
|
|
|
|
|
-- Combine with other DDL
|
|
CREATE TABLE T(pk INT NOT NULL PRIMARY KEY);
|
|
|
|
SELECT set('t');
|
|
|
|
INSERT INTO T VALUES (1), (2);
|
|
|
|
ALTER TABLE T ADD COLUMN c_int INT NOT NULL DEFAULT -1;
|
|
|
|
INSERT INTO T VALUES (3), (4);
|
|
|
|
ALTER TABLE T ADD COLUMN c_text TEXT DEFAULT 'Hello';
|
|
|
|
INSERT INTO T VALUES (5), (6);
|
|
|
|
ALTER TABLE T ALTER COLUMN c_text SET DEFAULT 'world',
|
|
ALTER COLUMN c_int SET DEFAULT 1;
|
|
|
|
INSERT INTO T VALUES (7), (8);
|
|
|
|
SELECT * FROM T ORDER BY pk;
|
|
|
|
-- Add an index
|
|
CREATE INDEX i ON T(c_int, c_text);
|
|
|
|
SELECT c_text FROM T WHERE c_int = -1;
|
|
|
|
SELECT comp();
|
|
|
|
-- query to exercise expand_tuple function
|
|
CREATE TABLE t1 AS
|
|
SELECT 1::int AS a , 2::int AS b
|
|
FROM generate_series(1,20) q;
|
|
|
|
ALTER TABLE t1 ADD COLUMN c text;
|
|
|
|
SELECT a,
|
|
stddev(cast((SELECT sum(1) FROM generate_series(1,20) x) AS float4))
|
|
OVER (PARTITION BY a,b,c ORDER BY b)
|
|
AS z
|
|
FROM t1;
|
|
|
|
DROP TABLE T;
|
|
|
|
-- test that we account for missing columns without defaults correctly
|
|
-- in expand_tuple, and that rows are correctly expanded for triggers
|
|
|
|
CREATE FUNCTION test_trigger()
|
|
RETURNS trigger
|
|
LANGUAGE plpgsql
|
|
AS $$
|
|
|
|
begin
|
|
raise notice 'old tuple: %', to_json(OLD)::text;
|
|
if TG_OP = 'DELETE'
|
|
then
|
|
return OLD;
|
|
else
|
|
return NEW;
|
|
end if;
|
|
end;
|
|
|
|
$$;
|
|
|
|
-- 2 new columns, both have defaults
|
|
CREATE TABLE t (id serial PRIMARY KEY, a int, b int, c int);
|
|
INSERT INTO t (a,b,c) VALUES (1,2,3);
|
|
ALTER TABLE t ADD COLUMN x int NOT NULL DEFAULT 4;
|
|
ALTER TABLE t ADD COLUMN y int NOT NULL DEFAULT 5;
|
|
CREATE TRIGGER a BEFORE UPDATE ON t FOR EACH ROW EXECUTE PROCEDURE test_trigger();
|
|
SELECT * FROM t;
|
|
UPDATE t SET y = 2;
|
|
SELECT * FROM t;
|
|
DROP TABLE t;
|
|
|
|
-- 2 new columns, first has default
|
|
CREATE TABLE t (id serial PRIMARY KEY, a int, b int, c int);
|
|
INSERT INTO t (a,b,c) VALUES (1,2,3);
|
|
ALTER TABLE t ADD COLUMN x int NOT NULL DEFAULT 4;
|
|
ALTER TABLE t ADD COLUMN y int;
|
|
CREATE TRIGGER a BEFORE UPDATE ON t FOR EACH ROW EXECUTE PROCEDURE test_trigger();
|
|
SELECT * FROM t;
|
|
UPDATE t SET y = 2;
|
|
SELECT * FROM t;
|
|
DROP TABLE t;
|
|
|
|
-- 2 new columns, second has default
|
|
CREATE TABLE t (id serial PRIMARY KEY, a int, b int, c int);
|
|
INSERT INTO t (a,b,c) VALUES (1,2,3);
|
|
ALTER TABLE t ADD COLUMN x int;
|
|
ALTER TABLE t ADD COLUMN y int NOT NULL DEFAULT 5;
|
|
CREATE TRIGGER a BEFORE UPDATE ON t FOR EACH ROW EXECUTE PROCEDURE test_trigger();
|
|
SELECT * FROM t;
|
|
UPDATE t SET y = 2;
|
|
SELECT * FROM t;
|
|
DROP TABLE t;
|
|
|
|
-- 2 new columns, neither has default
|
|
CREATE TABLE t (id serial PRIMARY KEY, a int, b int, c int);
|
|
INSERT INTO t (a,b,c) VALUES (1,2,3);
|
|
ALTER TABLE t ADD COLUMN x int;
|
|
ALTER TABLE t ADD COLUMN y int;
|
|
CREATE TRIGGER a BEFORE UPDATE ON t FOR EACH ROW EXECUTE PROCEDURE test_trigger();
|
|
SELECT * FROM t;
|
|
UPDATE t SET y = 2;
|
|
SELECT * FROM t;
|
|
DROP TABLE t;
|
|
|
|
-- same as last 4 tests but here the last original column has a NULL value
|
|
-- 2 new columns, both have defaults
|
|
CREATE TABLE t (id serial PRIMARY KEY, a int, b int, c int);
|
|
INSERT INTO t (a,b,c) VALUES (1,2,NULL);
|
|
ALTER TABLE t ADD COLUMN x int NOT NULL DEFAULT 4;
|
|
ALTER TABLE t ADD COLUMN y int NOT NULL DEFAULT 5;
|
|
CREATE TRIGGER a BEFORE UPDATE ON t FOR EACH ROW EXECUTE PROCEDURE test_trigger();
|
|
SELECT * FROM t;
|
|
UPDATE t SET y = 2;
|
|
SELECT * FROM t;
|
|
DROP TABLE t;
|
|
|
|
-- 2 new columns, first has default
|
|
CREATE TABLE t (id serial PRIMARY KEY, a int, b int, c int);
|
|
INSERT INTO t (a,b,c) VALUES (1,2,NULL);
|
|
ALTER TABLE t ADD COLUMN x int NOT NULL DEFAULT 4;
|
|
ALTER TABLE t ADD COLUMN y int;
|
|
CREATE TRIGGER a BEFORE UPDATE ON t FOR EACH ROW EXECUTE PROCEDURE test_trigger();
|
|
SELECT * FROM t;
|
|
UPDATE t SET y = 2;
|
|
SELECT * FROM t;
|
|
DROP TABLE t;
|
|
|
|
-- 2 new columns, second has default
|
|
CREATE TABLE t (id serial PRIMARY KEY, a int, b int, c int);
|
|
INSERT INTO t (a,b,c) VALUES (1,2,NULL);
|
|
ALTER TABLE t ADD COLUMN x int;
|
|
ALTER TABLE t ADD COLUMN y int NOT NULL DEFAULT 5;
|
|
CREATE TRIGGER a BEFORE UPDATE ON t FOR EACH ROW EXECUTE PROCEDURE test_trigger();
|
|
SELECT * FROM t;
|
|
UPDATE t SET y = 2;
|
|
SELECT * FROM t;
|
|
DROP TABLE t;
|
|
|
|
-- 2 new columns, neither has default
|
|
CREATE TABLE t (id serial PRIMARY KEY, a int, b int, c int);
|
|
INSERT INTO t (a,b,c) VALUES (1,2,NULL);
|
|
ALTER TABLE t ADD COLUMN x int;
|
|
ALTER TABLE t ADD COLUMN y int;
|
|
CREATE TRIGGER a BEFORE UPDATE ON t FOR EACH ROW EXECUTE PROCEDURE test_trigger();
|
|
SELECT * FROM t;
|
|
UPDATE t SET y = 2;
|
|
SELECT * FROM t;
|
|
DROP TABLE t;
|
|
|
|
-- make sure expanded tuple has correct self pointer
|
|
-- it will be required by the RI trigger doing the cascading delete
|
|
|
|
CREATE TABLE leader (a int PRIMARY KEY, b int);
|
|
CREATE TABLE follower (a int REFERENCES leader ON DELETE CASCADE, b int);
|
|
INSERT INTO leader VALUES (1, 1), (2, 2);
|
|
ALTER TABLE leader ADD c int;
|
|
ALTER TABLE leader DROP c;
|
|
DELETE FROM leader;
|
|
|
|
-- check that ALTER TABLE ... ALTER TYPE does the right thing
|
|
|
|
CREATE TABLE vtype( a integer);
|
|
INSERT INTO vtype VALUES (1);
|
|
ALTER TABLE vtype ADD COLUMN b DOUBLE PRECISION DEFAULT 0.2;
|
|
ALTER TABLE vtype ADD COLUMN c BOOLEAN DEFAULT true;
|
|
SELECT * FROM vtype;
|
|
ALTER TABLE vtype
|
|
ALTER b TYPE text USING b::text,
|
|
ALTER c TYPE text USING c::text;
|
|
SELECT * FROM vtype;
|
|
|
|
-- also check the case that doesn't rewrite the table
|
|
|
|
CREATE TABLE vtype2 (a int);
|
|
INSERT INTO vtype2 VALUES (1);
|
|
ALTER TABLE vtype2 ADD COLUMN b varchar(10) DEFAULT 'xxx';
|
|
ALTER TABLE vtype2 ALTER COLUMN b SET DEFAULT 'yyy';
|
|
INSERT INTO vtype2 VALUES (2);
|
|
|
|
ALTER TABLE vtype2 ALTER COLUMN b TYPE varchar(20) USING b::varchar(20);
|
|
SELECT * FROM vtype2;
|
|
|
|
|
|
-- Ensure that defaults are checked when evaluating whether HOT update
|
|
-- is possible, this was broken for a while:
|
|
-- https://postgr.es/m/20190202133521.ylauh3ckqa7colzj%40alap3.anarazel.de
|
|
BEGIN;
|
|
CREATE TABLE t();
|
|
INSERT INTO t DEFAULT VALUES;
|
|
ALTER TABLE t ADD COLUMN a int DEFAULT 1;
|
|
CREATE INDEX ON t(a);
|
|
-- set column with a default 1 to NULL, due to a bug that wasn't
|
|
-- noticed has heap_getattr buggily returned NULL for default columns
|
|
UPDATE t SET a = NULL;
|
|
|
|
-- verify that index and non-index scans show the same result
|
|
SET LOCAL enable_seqscan = true;
|
|
SELECT * FROM t WHERE a IS NULL;
|
|
SET LOCAL enable_seqscan = false;
|
|
SELECT * FROM t WHERE a IS NULL;
|
|
ROLLBACK;
|
|
|
|
-- verify that a default set on a non-plain table doesn't set a missing
|
|
-- value on the attribute
|
|
CREATE FOREIGN DATA WRAPPER dummy;
|
|
CREATE SERVER s0 FOREIGN DATA WRAPPER dummy;
|
|
CREATE FOREIGN TABLE ft1 (c1 integer NOT NULL) SERVER s0;
|
|
ALTER FOREIGN TABLE ft1 ADD COLUMN c8 integer DEFAULT 0;
|
|
ALTER FOREIGN TABLE ft1 ALTER COLUMN c8 TYPE char(10);
|
|
SELECT count(*)
|
|
FROM pg_attribute
|
|
WHERE attrelid = 'ft1'::regclass AND
|
|
(attmissingval IS NOT NULL OR atthasmissing);
|
|
|
|
-- cleanup
|
|
DROP FOREIGN TABLE ft1;
|
|
DROP SERVER s0;
|
|
DROP FOREIGN DATA WRAPPER dummy;
|
|
DROP TABLE vtype;
|
|
DROP TABLE vtype2;
|
|
DROP TABLE follower;
|
|
DROP TABLE leader;
|
|
DROP FUNCTION test_trigger();
|
|
DROP TABLE t1;
|
|
DROP FUNCTION set(name);
|
|
DROP FUNCTION comp();
|
|
DROP TABLE m;
|
|
DROP TABLE has_volatile;
|
|
DROP EVENT TRIGGER has_volatile_rewrite;
|
|
DROP FUNCTION log_rewrite;
|
|
DROP SCHEMA fast_default;
|
|
|
|
-- Leave a table with an active fast default in place, for pg_upgrade testing
|
|
set search_path = public;
|
|
create table has_fast_default(f1 int);
|
|
insert into has_fast_default values(1);
|
|
alter table has_fast_default add column f2 int default 42;
|
|
table has_fast_default;
|