76 lines
1.7 KiB
PL/PgSQL
76 lines
1.7 KiB
PL/PgSQL
CREATE TABLE ttable1 OF nothing;
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CREATE TYPE person_type AS (id int, name text);
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CREATE TABLE persons OF person_type;
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CREATE TABLE IF NOT EXISTS persons OF person_type;
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SELECT * FROM persons;
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\d persons
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CREATE FUNCTION get_all_persons() RETURNS SETOF person_type
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LANGUAGE SQL
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AS $$
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SELECT * FROM persons;
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$$;
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SELECT * FROM get_all_persons();
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-- certain ALTER TABLE operations on typed tables are not allowed
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ALTER TABLE persons ADD COLUMN comment text;
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ALTER TABLE persons DROP COLUMN name;
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ALTER TABLE persons RENAME COLUMN id TO num;
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ALTER TABLE persons ALTER COLUMN name TYPE varchar;
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CREATE TABLE stuff (id int);
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ALTER TABLE persons INHERIT stuff;
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CREATE TABLE personsx OF person_type (myname WITH OPTIONS NOT NULL); -- error
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CREATE TABLE persons2 OF person_type (
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id WITH OPTIONS PRIMARY KEY,
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UNIQUE (name)
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);
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\d persons2
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CREATE TABLE persons3 OF person_type (
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PRIMARY KEY (id),
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name WITH OPTIONS DEFAULT ''
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);
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\d persons3
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CREATE TABLE persons4 OF person_type (
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name WITH OPTIONS NOT NULL,
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name WITH OPTIONS DEFAULT '' -- error, specified more than once
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);
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DROP TYPE person_type RESTRICT;
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DROP TYPE person_type CASCADE;
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CREATE TABLE persons5 OF stuff; -- only CREATE TYPE AS types may be used
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DROP TABLE stuff;
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-- implicit casting
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CREATE TYPE person_type AS (id int, name text);
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CREATE TABLE persons OF person_type;
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INSERT INTO persons VALUES (1, 'test');
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CREATE FUNCTION namelen(person_type) RETURNS int LANGUAGE SQL AS $$ SELECT length($1.name) $$;
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SELECT id, namelen(persons) FROM persons;
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CREATE TABLE persons2 OF person_type (
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id WITH OPTIONS PRIMARY KEY,
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UNIQUE (name)
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);
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\d persons2
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CREATE TABLE persons3 OF person_type (
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PRIMARY KEY (id),
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name NOT NULL DEFAULT ''
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);
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\d persons3
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