126 lines
3.2 KiB
SQL
126 lines
3.2 KiB
SQL
--
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-- CREATE_TYPE
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--
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--
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-- Note: widget_in/out were created in create_function_1, without any
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-- prior shell-type creation. These commands therefore complete a test
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-- of the "old style" approach of making the functions first.
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--
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CREATE TYPE widget (
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internallength = 24,
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input = widget_in,
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output = widget_out,
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typmod_in = numerictypmodin,
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typmod_out = numerictypmodout,
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alignment = double
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);
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CREATE TYPE city_budget (
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internallength = 16,
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input = int44in,
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output = int44out,
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element = int4,
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category = 'x', -- just to verify the system will take it
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preferred = true -- ditto
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);
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-- Test creation and destruction of shell types
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CREATE TYPE shell;
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CREATE TYPE shell; -- fail, type already present
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DROP TYPE shell;
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DROP TYPE shell; -- fail, type not exist
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-- also, let's leave one around for purposes of pg_dump testing
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CREATE TYPE myshell;
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--
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-- Test type-related default values (broken in releases before PG 7.2)
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--
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-- This part of the test also exercises the "new style" approach of making
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-- a shell type and then filling it in.
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--
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CREATE TYPE int42;
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CREATE TYPE text_w_default;
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-- Make dummy I/O routines using the existing internal support for int4, text
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CREATE FUNCTION int42_in(cstring)
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RETURNS int42
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AS 'int4in'
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LANGUAGE internal STRICT IMMUTABLE;
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CREATE FUNCTION int42_out(int42)
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RETURNS cstring
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AS 'int4out'
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LANGUAGE internal STRICT IMMUTABLE;
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CREATE FUNCTION text_w_default_in(cstring)
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RETURNS text_w_default
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AS 'textin'
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LANGUAGE internal STRICT IMMUTABLE;
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CREATE FUNCTION text_w_default_out(text_w_default)
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RETURNS cstring
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AS 'textout'
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LANGUAGE internal STRICT IMMUTABLE;
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CREATE TYPE int42 (
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internallength = 4,
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input = int42_in,
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output = int42_out,
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alignment = int4,
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default = 42,
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passedbyvalue
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);
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CREATE TYPE text_w_default (
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internallength = variable,
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input = text_w_default_in,
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output = text_w_default_out,
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alignment = int4,
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default = 'zippo'
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);
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CREATE TABLE default_test (f1 text_w_default, f2 int42);
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INSERT INTO default_test DEFAULT VALUES;
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SELECT * FROM default_test;
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-- Test stand-alone composite type
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CREATE TYPE default_test_row AS (f1 text_w_default, f2 int42);
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CREATE FUNCTION get_default_test() RETURNS SETOF default_test_row AS '
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SELECT * FROM default_test;
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' LANGUAGE SQL;
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SELECT * FROM get_default_test();
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-- Test comments
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COMMENT ON TYPE bad IS 'bad comment';
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COMMENT ON TYPE default_test_row IS 'good comment';
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COMMENT ON TYPE default_test_row IS NULL;
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COMMENT ON COLUMN default_test_row.nope IS 'bad comment';
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COMMENT ON COLUMN default_test_row.f1 IS 'good comment';
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COMMENT ON COLUMN default_test_row.f1 IS NULL;
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-- Check shell type create for existing types
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CREATE TYPE text_w_default; -- should fail
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DROP TYPE default_test_row CASCADE;
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DROP TABLE default_test;
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-- Check type create with input/output incompatibility
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CREATE TYPE not_existing_type (INPUT = array_in,
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OUTPUT = array_out,
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ELEMENT = int,
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INTERNALLENGTH = 32);
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-- Check usage of typmod with a user-defined type
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-- (we have borrowed numeric's typmod functions)
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CREATE TEMP TABLE mytab (foo widget(42,13,7)); -- should fail
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CREATE TEMP TABLE mytab (foo widget(42,13));
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SELECT format_type(atttypid,atttypmod) FROM pg_attribute
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WHERE attrelid = 'mytab'::regclass AND attnum > 0;
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