--
-- Test domains.
--
-- Test Comment / Drop
create domain domaindroptest int4;
comment on domain domaindroptest is 'About to drop this..';
create domain dependenttypetest domaindroptest;
-- fail because of dependent type
drop domain domaindroptest;
ERROR:  cannot drop type domaindroptest because other objects depend on it
DETAIL:  type dependenttypetest depends on type domaindroptest
HINT:  Use DROP ... CASCADE to drop the dependent objects too.
drop domain domaindroptest cascade;
NOTICE:  drop cascades to type dependenttypetest
-- this should fail because already gone
drop domain domaindroptest cascade;
ERROR:  type "domaindroptest" does not exist
-- Test domain input.
-- Note: the point of checking both INSERT and COPY FROM is that INSERT
-- exercises CoerceToDomain while COPY exercises domain_in.
create domain domainvarchar varchar(5);
create domain domainnumeric numeric(8,2);
create domain domainint4 int4;
create domain domaintext text;
-- Test explicit coercions --- these should succeed (and truncate)
SELECT cast('123456' as domainvarchar);
 domainvarchar 
---------------
 12345
(1 row)

SELECT cast('12345' as domainvarchar);
 domainvarchar 
---------------
 12345
(1 row)

-- Test tables using domains
create table basictest
           ( testint4 domainint4
           , testtext domaintext
           , testvarchar domainvarchar
           , testnumeric domainnumeric
           );
INSERT INTO basictest values ('88', 'haha', 'short', '123.12');      -- Good
INSERT INTO basictest values ('88', 'haha', 'short text', '123.12'); -- Bad varchar
ERROR:  value too long for type character varying(5)
INSERT INTO basictest values ('88', 'haha', 'short', '123.1212');    -- Truncate numeric
-- Test copy
COPY basictest (testvarchar) FROM stdin; -- fail
ERROR:  value too long for type character varying(5)
CONTEXT:  COPY basictest, line 1, column testvarchar: "notsoshorttext"
COPY basictest (testvarchar) FROM stdin;
select * from basictest;
 testint4 | testtext | testvarchar | testnumeric 
----------+----------+-------------+-------------
       88 | haha     | short       |      123.12
       88 | haha     | short       |      123.12
          |          | short       |            
(3 rows)

-- check that domains inherit operations from base types
select testtext || testvarchar as concat, testnumeric + 42 as sum
from basictest;
  concat   |  sum   
-----------+--------
 hahashort | 165.12
 hahashort | 165.12
           |       
(3 rows)

-- check that union/case/coalesce type resolution handles domains properly
select coalesce(4::domainint4, 7) is of (int4) as t;
 t 
---
 t
(1 row)

select coalesce(4::domainint4, 7) is of (domainint4) as f;
 f 
---
 f
(1 row)

select coalesce(4::domainint4, 7::domainint4) is of (domainint4) as t;
 t 
---
 t
(1 row)

drop table basictest;
drop domain domainvarchar restrict;
drop domain domainnumeric restrict;
drop domain domainint4 restrict;
drop domain domaintext;
-- Test domains over array types
create domain domainint4arr int4[1];
create domain domainchar4arr varchar(4)[2][3];
create table domarrtest
           ( testint4arr domainint4arr
           , testchar4arr domainchar4arr
            );
INSERT INTO domarrtest values ('{2,2}', '{{"a","b"},{"c","d"}}');
INSERT INTO domarrtest values ('{{2,2},{2,2}}', '{{"a","b"}}');
INSERT INTO domarrtest values ('{2,2}', '{{"a","b"},{"c","d"},{"e","f"}}');
INSERT INTO domarrtest values ('{2,2}', '{{"a"},{"c"}}');
INSERT INTO domarrtest values (NULL, '{{"a","b","c"},{"d","e","f"}}');
INSERT INTO domarrtest values (NULL, '{{"toolong","b","c"},{"d","e","f"}}');
ERROR:  value too long for type character varying(4)
INSERT INTO domarrtest (testint4arr[1], testint4arr[3]) values (11,22);
select * from domarrtest;
  testint4arr  |    testchar4arr     
---------------+---------------------
 {2,2}         | {{a,b},{c,d}}
 {{2,2},{2,2}} | {{a,b}}
 {2,2}         | {{a,b},{c,d},{e,f}}
 {2,2}         | {{a},{c}}
               | {{a,b,c},{d,e,f}}
 {11,NULL,22}  | 
(6 rows)

select testint4arr[1], testchar4arr[2:2] from domarrtest;
 testint4arr | testchar4arr 
-------------+--------------
           2 | {{c,d}}
             | {}
           2 | {{c,d}}
           2 | {{c}}
             | {{d,e,f}}
          11 | 
(6 rows)

select array_dims(testint4arr), array_dims(testchar4arr) from domarrtest;
 array_dims | array_dims 
------------+------------
 [1:2]      | [1:2][1:2]
 [1:2][1:2] | [1:1][1:2]
 [1:2]      | [1:3][1:2]
 [1:2]      | [1:2][1:1]
            | [1:2][1:3]
 [1:3]      | 
(6 rows)

COPY domarrtest FROM stdin;
COPY domarrtest FROM stdin;	-- fail
ERROR:  value too long for type character varying(4)
CONTEXT:  COPY domarrtest, line 1, column testchar4arr: "{qwerty,w,e}"
select * from domarrtest;
  testint4arr  |    testchar4arr     
---------------+---------------------
 {2,2}         | {{a,b},{c,d}}
 {{2,2},{2,2}} | {{a,b}}
 {2,2}         | {{a,b},{c,d},{e,f}}
 {2,2}         | {{a},{c}}
               | {{a,b,c},{d,e,f}}
 {11,NULL,22}  | 
 {3,4}         | {q,w,e}
               | 
(8 rows)

update domarrtest set
  testint4arr[1] = testint4arr[1] + 1,
  testint4arr[3] = testint4arr[3] - 1
where testchar4arr is null;
select * from domarrtest where testchar4arr is null;
   testint4arr    | testchar4arr 
------------------+--------------
 {12,NULL,21}     | 
 {NULL,NULL,NULL} | 
(2 rows)

drop table domarrtest;
drop domain domainint4arr restrict;
drop domain domainchar4arr restrict;
create domain dia as int[];
select '{1,2,3}'::dia;
   dia   
---------
 {1,2,3}
(1 row)

select array_dims('{1,2,3}'::dia);
 array_dims 
------------
 [1:3]
(1 row)

select pg_typeof('{1,2,3}'::dia);
 pg_typeof 
-----------
 dia
(1 row)

select pg_typeof('{1,2,3}'::dia || 42); -- should be int[] not dia
 pg_typeof 
-----------
 integer[]
(1 row)

drop domain dia;
-- Test domains over arrays of composite
create type comptype as (r float8, i float8);
create domain dcomptypea as comptype[];
create table dcomptable (d1 dcomptypea unique);
ERROR:  data type dcomptypea has no default operator class for access method "hash"
HINT:  You must specify an operator class or define a default operator class for the data type.
-- GPDB: marking the column as 'unique' fails, because a unique column needs
-- to be part of the distribution key, and composite types can't be used as
-- distribution keys because they have no hash opclasses.
create table dcomptable (d1 dcomptypea /*unique*/);
create index on dcomptable (d1);
insert into dcomptable values (array[row(1,2)]::dcomptypea);
insert into dcomptable values (array[row(3,4), row(5,6)]::comptype[]);
insert into dcomptable values (array[row(7,8)::comptype, row(9,10)::comptype]);
--insert into dcomptable values (array[row(1,2)]::dcomptypea);  -- fail on uniqueness
insert into dcomptable (d1[1]) values(row(9,10));
insert into dcomptable (d1[1].r) values(11);
select * from dcomptable;
         d1         
--------------------
 {"(1,2)"}
 {"(3,4)","(5,6)"}
 {"(7,8)","(9,10)"}
 {"(9,10)"}
 {"(11,)"}
(5 rows)

select d1[2], d1[1].r, d1[1].i from dcomptable;
   d1   | r  | i  
--------+----+----
        |  1 |  2
 (5,6)  |  3 |  4
 (9,10) |  7 |  8
        |  9 | 10
        | 11 |   
(5 rows)

update dcomptable set d1[2] = row(d1[2].i, d1[2].r);
select * from dcomptable;
         d1         
--------------------
 {"(1,2)","(,)"}
 {"(3,4)","(6,5)"}
 {"(7,8)","(10,9)"}
 {"(9,10)","(,)"}
 {"(11,)","(,)"}
(5 rows)

update dcomptable set d1[1].r = d1[1].r + 1 where d1[1].i > 0;
select * from dcomptable;
         d1         
--------------------
 {"(11,)","(,)"}
 {"(2,2)","(,)"}
 {"(4,4)","(6,5)"}
 {"(8,8)","(10,9)"}
 {"(10,10)","(,)"}
(5 rows)

alter domain dcomptypea add constraint c1 check (value[1].r <= value[1].i);
alter domain dcomptypea add constraint c2 check (value[1].r > value[1].i);  -- fail
ERROR:  column "d1" of table "dcomptable" contains values that violate the new constraint
select array[row(2,1)]::dcomptypea;  -- fail
ERROR:  value for domain dcomptypea violates check constraint "c1"
insert into dcomptable values (array[row(1,2)]::comptype[]);
insert into dcomptable values (array[row(2,1)]::comptype[]);  -- fail
ERROR:  value for domain dcomptypea violates check constraint "c1"
insert into dcomptable (d1[1].r) values(99);
insert into dcomptable (d1[1].r, d1[1].i) values(99, 100);
insert into dcomptable (d1[1].r, d1[1].i) values(100, 99);  -- fail
ERROR:  value for domain dcomptypea violates check constraint "c1"
update dcomptable set d1[1].r = d1[1].r + 1 where d1[1].i > 0;  -- fail
ERROR:  value for domain dcomptypea violates check constraint "c1"
update dcomptable set d1[1].r = d1[1].r - 1, d1[1].i = d1[1].i + 1
  where d1[1].i > 0;
select * from dcomptable;
         d1         
--------------------
 {"(11,)","(,)"}
 {"(99,)"}
 {"(1,3)","(,)"}
 {"(3,5)","(6,5)"}
 {"(7,9)","(10,9)"}
 {"(9,11)","(,)"}
 {"(0,3)"}
 {"(98,101)"}
(8 rows)

explain (verbose, costs off)
  update dcomptable set d1[1].r = d1[1].r - 1, d1[1].i = d1[1].i + 1
    where d1[1].i > 0;
                                                        QUERY PLAN                                                         
---------------------------------------------------------------------------------------------------------------------------
 Update on public.dcomptable
   ->  Seq Scan on public.dcomptable
         Output: (d1[1].r := (d1[1].r - 1::double precision))[1].i := (d1[1].i + 1::double precision), ctid, gp_segment_id
         Filter: (dcomptable.d1[1].i > 0::double precision)
 Optimizer: Postgres query optimizer
 Settings: optimizer=off
(6 rows)

create rule silly as on delete to dcomptable do instead
  update dcomptable set d1[1].r = d1[1].r - 1, d1[1].i = d1[1].i + 1
    where d1[1].i > 0;
\d+ dcomptable
                        Table "public.dcomptable"
 Column |    Type    | Modifiers | Storage  | Stats target | Description 
--------+------------+-----------+----------+--------------+-------------
 d1     | dcomptypea |           | extended |              | 
Indexes:
    "dcomptable_d1_idx" btree (d1)
Rules:
    silly AS
    ON DELETE TO dcomptable DO INSTEAD  UPDATE dcomptable SET d1[1].r = dcomptable.d1[1].r - 1::double precision, d1[1].i = dcomptable.d1[1].i + 1::double precision
  WHERE dcomptable.d1[1].i > 0::double precision
Distributed randomly

drop table dcomptable;
drop type comptype cascade;
NOTICE:  drop cascades to type dcomptypea
-- Test not-null restrictions
create domain dnotnull varchar(15) NOT NULL;
create domain dnull    varchar(15);
create domain dcheck   varchar(15) NOT NULL CHECK (VALUE = 'a' OR VALUE = 'c' OR VALUE = 'd');
create table nulltest
           ( col1 dnotnull
           , col2 dnotnull NULL  -- NOT NULL in the domain cannot be overridden
           , col3 dnull    NOT NULL
           , col4 dnull
           , col5 dcheck CHECK (col5 IN ('c', 'd'))
           );
INSERT INTO nulltest DEFAULT VALUES;
ERROR:  null value in column "col3" violates not-null constraint
DETAIL:  Failing row contains (null, null, null, null, null).
INSERT INTO nulltest values ('a', 'b', 'c', 'd', 'c');  -- Good
insert into nulltest values ('a', 'b', 'c', 'd', NULL);
ERROR:  domain dcheck does not allow null values
insert into nulltest values ('a', 'b', 'c', 'd', 'a');
ERROR:  new row for relation "nulltest" violates check constraint "nulltest_col5_check"
DETAIL:  Failing row contains (a, b, c, d, a).
INSERT INTO nulltest values (NULL, 'b', 'c', 'd', 'd');
ERROR:  domain dnotnull does not allow null values
INSERT INTO nulltest values ('a', NULL, 'c', 'd', 'c');
ERROR:  domain dnotnull does not allow null values
INSERT INTO nulltest values ('a', 'b', NULL, 'd', 'c');
ERROR:  null value in column "col3" violates not-null constraint
DETAIL:  Failing row contains (a, b, null, d, c).
INSERT INTO nulltest values ('a', 'b', 'c', NULL, 'd'); -- Good
-- Test copy
COPY nulltest FROM stdin; --fail
ERROR:  null value in column "col3" violates not-null constraint
DETAIL:  Failing row contains (a, b, null, d, d).
CONTEXT:  COPY nulltest, line 1: "a	b	\N	d	d"
COPY nulltest FROM stdin; --fail
ERROR:  domain dcheck does not allow null values
CONTEXT:  COPY nulltest, line 1, column col5: null input
-- Last row is bad
COPY nulltest FROM stdin;
ERROR:  new row for relation "nulltest" violates check constraint "nulltest_col5_check"
DETAIL:  Failing row contains (a, b, c, null, a).
CONTEXT:  COPY nulltest, line 3: "a	b	c	\N	a"
select * from nulltest;
 col1 | col2 | col3 | col4 | col5 
------+------+------+------+------
 a    | b    | c    | d    | c
 a    | b    | c    |      | d
(2 rows)

-- Test out coerced (casted) constraints
SELECT cast('1' as dnotnull);
 dnotnull 
----------
 1
(1 row)

SELECT cast(NULL as dnotnull); -- fail
ERROR:  domain dnotnull does not allow null values
SELECT cast(cast(NULL as dnull) as dnotnull); -- fail
ERROR:  domain dnotnull does not allow null values
SELECT cast(col4 as dnotnull) from nulltest; -- fail
ERROR:  domain dnotnull does not allow null values
-- cleanup
drop table nulltest;
drop domain dnotnull restrict;
drop domain dnull restrict;
drop domain dcheck restrict;
create domain ddef1 int4 DEFAULT 3;
create domain ddef2 oid DEFAULT '12';
-- Type mixing, function returns int8
create domain ddef3 text DEFAULT 5;
create sequence ddef4_seq;
create domain ddef4 int4 DEFAULT nextval('ddef4_seq');
create domain ddef5 numeric(8,2) NOT NULL DEFAULT '12.12';
create table defaulttest
            ( col1 ddef1
            , col2 ddef2
            , col3 ddef3
            , col4 ddef4 PRIMARY KEY
            , col5 ddef1 NOT NULL DEFAULT NULL
            , col6 ddef2 DEFAULT '88'
            , col7 ddef4 DEFAULT 8000
            , col8 ddef5
            );
insert into defaulttest(col4) values(0); -- fails, col5 defaults to null
ERROR:  null value in column "col5" violates not-null constraint
DETAIL:  Failing row contains (3, 12, 5, 0, null, 88, 8000, 12.12).
alter table defaulttest alter column col5 drop default;
insert into defaulttest default values; -- succeeds, inserts domain default
-- We used to treat SET DEFAULT NULL as equivalent to DROP DEFAULT; wrong
alter table defaulttest alter column col5 set default null;
insert into defaulttest(col4) values(0); -- fails
ERROR:  null value in column "col5" violates not-null constraint
DETAIL:  Failing row contains (3, 12, 5, 0, null, 88, 8000, 12.12).
alter table defaulttest alter column col5 drop default;
insert into defaulttest default values;
insert into defaulttest default values;
-- Test defaults with copy
COPY defaulttest(col5) FROM stdin;
select * from defaulttest;
 col1 | col2 | col3 | col4 | col5 | col6 | col7 | col8  
------+------+------+------+------+------+------+-------
    3 |   12 | 5    |    1 |    3 |   88 | 8000 | 12.12
    3 |   12 | 5    |    2 |    3 |   88 | 8000 | 12.12
    3 |   12 | 5    |    3 |    3 |   88 | 8000 | 12.12
    3 |   12 | 5    |    4 |   42 |   88 | 8000 | 12.12
(4 rows)

drop table defaulttest cascade;
-- Test ALTER DOMAIN .. NOT NULL
create domain dnotnulltest integer;
create table domnotnull
( col1 dnotnulltest
, col2 dnotnulltest
, id int4 -- distribute on this column, so that we can UPDATE the others
) distributed by (id);
insert into domnotnull default values;
alter domain dnotnulltest set not null; -- fails
ERROR:  column "col1" of table "domnotnull" contains null values
update domnotnull set col1 = 5;
alter domain dnotnulltest set not null; -- fails
ERROR:  column "col2" of table "domnotnull" contains null values
update domnotnull set col2 = 6;
alter domain dnotnulltest set not null;
update domnotnull set col1 = null; -- fails
ERROR:  domain dnotnulltest does not allow null values
alter domain dnotnulltest drop not null;
update domnotnull set col1 = null;
drop domain dnotnulltest cascade;
NOTICE:  drop cascades to 2 other objects
DETAIL:  drop cascades to table domnotnull column col1
drop cascades to table domnotnull column col2
-- Test ALTER DOMAIN .. DEFAULT ..
create table domdeftest (col1 ddef1);
insert into domdeftest default values;
select * from domdeftest;
 col1 
------
    3
(1 row)

alter domain ddef1 set default '42';
insert into domdeftest default values;
select * from domdeftest;
 col1 
------
    3
   42
(2 rows)

alter domain ddef1 drop default;
insert into domdeftest default values;
select * from domdeftest;
 col1 
------
    3
   42
     
(3 rows)

drop table domdeftest;
-- Test ALTER DOMAIN .. CONSTRAINT ..
create domain con as integer;
create table domcontest (col1 con);
insert into domcontest values (1);
insert into domcontest values (2);
alter domain con add constraint t check (VALUE < 1); -- fails
ERROR:  column "col1" of table "domcontest" contains values that violate the new constraint
alter domain con add constraint t check (VALUE < 34);
alter domain con add check (VALUE > 0);
insert into domcontest values (-5); -- fails
ERROR:  value for domain con violates check constraint "con_check"
insert into domcontest values (42); -- fails
ERROR:  value for domain con violates check constraint "t"
insert into domcontest values (5);
alter domain con drop constraint t;
insert into domcontest values (-5); --fails
ERROR:  value for domain con violates check constraint "con_check"
insert into domcontest values (42);
alter domain con drop constraint nonexistent;
ERROR:  constraint "nonexistent" of domain "con" does not exist
alter domain con drop constraint if exists nonexistent;
NOTICE:  constraint "nonexistent" of domain "con" does not exist, skipping
-- Test ALTER DOMAIN .. CONSTRAINT .. NOT VALID
create domain things AS INT;
CREATE TABLE thethings (id int, stuff things);
NOTICE:  Table doesn't have 'DISTRIBUTED BY' clause -- Using column named 'id' as the Greenplum Database data distribution key for this table.
HINT:  The 'DISTRIBUTED BY' clause determines the distribution of data. Make sure column(s) chosen are the optimal data distribution key to minimize skew.
INSERT INTO thethings (stuff) VALUES (55);
ALTER DOMAIN things ADD CONSTRAINT meow CHECK (VALUE < 11);
ERROR:  column "stuff" of table "thethings" contains values that violate the new constraint
ALTER DOMAIN things ADD CONSTRAINT meow CHECK (VALUE < 11) NOT VALID;
ALTER DOMAIN things VALIDATE CONSTRAINT meow;
ERROR:  column "stuff" of table "thethings" contains values that violate the new constraint
UPDATE thethings SET stuff = 10;
ALTER DOMAIN things VALIDATE CONSTRAINT meow;
-- Confirm ALTER DOMAIN with RULES.
create table domtab (col1 integer);
create domain dom as integer;
create view domview as select cast(col1 as dom) from domtab;
insert into domtab (col1) values (null);
insert into domtab (col1) values (5);
select * from domview;
 col1 
------
     
    5
(2 rows)

alter domain dom set not null;
select * from domview; -- fail
ERROR:  domain dom does not allow null values
alter domain dom drop not null;
select * from domview;
 col1 
------
     
    5
(2 rows)

alter domain dom add constraint domchkgt6 check(value > 6);
select * from domview; --fail
ERROR:  value for domain dom violates check constraint "domchkgt6"
alter domain dom drop constraint domchkgt6 restrict;
select * from domview;
 col1 
------
     
    5
(2 rows)

-- cleanup
drop domain ddef1 restrict;
drop domain ddef2 restrict;
drop domain ddef3 restrict;
drop domain ddef4 restrict;
drop domain ddef5 restrict;
drop sequence ddef4_seq;
-- Test domains over domains
create domain vchar4 varchar(4);
create domain dinter vchar4 check (substring(VALUE, 1, 1) = 'x');
create domain dtop dinter check (substring(VALUE, 2, 1) = '1');
select 'x123'::dtop;
 dtop 
------
 x123
(1 row)

select 'x1234'::dtop; -- explicit coercion should truncate
 dtop 
------
 x123
(1 row)

select 'y1234'::dtop; -- fail
ERROR:  value for domain dtop violates check constraint "dinter_check"
select 'y123'::dtop; -- fail
ERROR:  value for domain dtop violates check constraint "dinter_check"
select 'yz23'::dtop; -- fail
ERROR:  value for domain dtop violates check constraint "dinter_check"
select 'xz23'::dtop; -- fail
ERROR:  value for domain dtop violates check constraint "dtop_check"
create temp table dtest(f1 dtop);
insert into dtest values('x123');
insert into dtest values('x1234'); -- fail, implicit coercion
ERROR:  value too long for type character varying(4)
insert into dtest values('y1234'); -- fail, implicit coercion
ERROR:  value too long for type character varying(4)
insert into dtest values('y123'); -- fail
ERROR:  value for domain dtop violates check constraint "dinter_check"
insert into dtest values('yz23'); -- fail
ERROR:  value for domain dtop violates check constraint "dinter_check"
insert into dtest values('xz23'); -- fail
ERROR:  value for domain dtop violates check constraint "dtop_check"
drop table dtest;
drop domain vchar4 cascade;
NOTICE:  drop cascades to 2 other objects
DETAIL:  drop cascades to type dinter
drop cascades to type dtop
-- Make sure that constraints of newly-added domain columns are
-- enforced correctly, even if there's no default value for the new
-- column. Per bug #1433
create domain str_domain as text not null;
create table domain_test (a int, b int);
insert into domain_test values (1, 2);
insert into domain_test values (1, 2);
-- should fail
alter table domain_test add column c str_domain;
ERROR:  domain str_domain does not allow null values
create domain str_domain2 as text check (value <> 'foo') default 'foo';
-- should fail
alter table domain_test add column d str_domain2;
ERROR:  value for domain str_domain2 violates check constraint "str_domain2_check"
-- Check that domain constraints on prepared statement parameters of
-- unknown type are enforced correctly.
create domain pos_int as int4 check (value > 0) not null;
prepare s1 as select $1::pos_int = 10 as "is_ten";
execute s1(10);
 is_ten 
--------
 t
(1 row)

execute s1(0); -- should fail
ERROR:  value for domain pos_int violates check constraint "pos_int_check"
execute s1(NULL); -- should fail
ERROR:  domain pos_int does not allow null values
-- Check that domain constraints on plpgsql function parameters, results,
-- and local variables are enforced correctly.
create function doubledecrement(p1 pos_int) returns pos_int as $$
declare v pos_int;
begin
    return p1;
end$$ language plpgsql;
select doubledecrement(3); -- fail because of implicit null assignment
ERROR:  domain pos_int does not allow null values
CONTEXT:  PL/pgSQL function doubledecrement(pos_int) line 3 during statement block local variable initialization
create or replace function doubledecrement(p1 pos_int) returns pos_int as $$
declare v pos_int := 0;
begin
    return p1;
end$$ language plpgsql;
select doubledecrement(3); -- fail at initialization assignment
ERROR:  value for domain pos_int violates check constraint "pos_int_check"
CONTEXT:  PL/pgSQL function doubledecrement(pos_int) line 3 during statement block local variable initialization
create or replace function doubledecrement(p1 pos_int) returns pos_int as $$
declare v pos_int := 1;
begin
    v := p1 - 1;
    return v - 1;
end$$ language plpgsql;
select doubledecrement(null); -- fail before call
ERROR:  domain pos_int does not allow null values
select doubledecrement(0); -- fail before call
ERROR:  value for domain pos_int violates check constraint "pos_int_check"
select doubledecrement(1); -- fail at assignment to v
ERROR:  value for domain pos_int violates check constraint "pos_int_check"
CONTEXT:  PL/pgSQL function doubledecrement(pos_int) line 4 at assignment
select doubledecrement(2); -- fail at return
ERROR:  value for domain pos_int violates check constraint "pos_int_check"
CONTEXT:  PL/pgSQL function doubledecrement(pos_int) while casting return value to function's return type
select doubledecrement(3); -- good
 doubledecrement 
-----------------
               1
(1 row)

-- Check that ALTER DOMAIN tests columns of derived types
create domain posint as int4;
-- Currently, this doesn't work for composite types, but verify it complains
create type ddtest1 as (f1 posint);
create table ddtest2(f1 ddtest1);
insert into ddtest2 values(row(-1));
alter domain posint add constraint c1 check(value >= 0);
ERROR:  cannot alter type "posint" because column "ddtest2.f1" uses it
drop table ddtest2;
-- Likewise for domains within arrays of composite
create table ddtest2(f1 ddtest1[], distkey int) distributed by (distkey);
insert into ddtest2 values('{(-1)}');
alter domain posint add constraint c1 check(value >= 0);
ERROR:  cannot alter type "posint" because column "ddtest2.f1" uses it
drop table ddtest2;
-- Likewise for domains within domains over array of composite
create domain ddtest1d as ddtest1[];
create table ddtest2(f1 ddtest1d);
insert into ddtest2 values('{(-1)}');
alter domain posint add constraint c1 check(value >= 0);
ERROR:  cannot alter type "posint" because column "ddtest2.f1" uses it
drop table ddtest2;
drop domain ddtest1d;
-- Doesn't work for ranges, either
create type rposint as range (subtype = posint);
create table ddtest2(f1 rposint);
insert into ddtest2 values('(-1,3]');
alter domain posint add constraint c1 check(value >= 0);
ERROR:  cannot alter type "posint" because column "ddtest2.f1" uses it
drop table ddtest2;
drop type rposint;
alter domain posint add constraint c1 check(value >= 0);
create domain posint2 as posint check (value % 2 = 0);
create table ddtest2(f1 posint2);
insert into ddtest2 values(11); -- fail
ERROR:  value for domain posint2 violates check constraint "posint2_check"
insert into ddtest2 values(-2); -- fail
ERROR:  value for domain posint2 violates check constraint "c1"
insert into ddtest2 values(2);
alter domain posint add constraint c2 check(value >= 10); -- fail
ERROR:  column "f1" of table "ddtest2" contains values that violate the new constraint
alter domain posint add constraint c2 check(value > 0); -- OK
drop table ddtest2;
drop type ddtest1;
drop domain posint cascade;
NOTICE:  drop cascades to type posint2
--
-- Check enforcement of domain-related typmod in plpgsql (bug #5717)
--
create or replace function array_elem_check(numeric) returns numeric as $$
declare
  x numeric(4,2)[1];
begin
  x[1] := $1;
  return x[1];
end$$ language plpgsql;
select array_elem_check(121.00);
ERROR:  numeric field overflow
DETAIL:  A field with precision 4, scale 2 must round to an absolute value less than 10^2.
CONTEXT:  PL/pgSQL function array_elem_check(numeric) line 5 at assignment
select array_elem_check(1.23456);
 array_elem_check 
------------------
             1.23
(1 row)

create domain mynums as numeric(4,2)[1];
create or replace function array_elem_check(numeric) returns numeric as $$
declare
  x mynums;
begin
  x[1] := $1;
  return x[1];
end$$ language plpgsql;
select array_elem_check(121.00);
ERROR:  numeric field overflow
DETAIL:  A field with precision 4, scale 2 must round to an absolute value less than 10^2.
CONTEXT:  PL/pgSQL function array_elem_check(numeric) line 5 at assignment
select array_elem_check(1.23456);
 array_elem_check 
------------------
             1.23
(1 row)

create domain mynums2 as mynums;
create or replace function array_elem_check(numeric) returns numeric as $$
declare
  x mynums2;
begin
  x[1] := $1;
  return x[1];
end$$ language plpgsql;
select array_elem_check(121.00);
ERROR:  numeric field overflow
DETAIL:  A field with precision 4, scale 2 must round to an absolute value less than 10^2.
CONTEXT:  PL/pgSQL function array_elem_check(numeric) line 5 at assignment
select array_elem_check(1.23456);
 array_elem_check 
------------------
             1.23
(1 row)

drop function array_elem_check(numeric);
--
-- Check enforcement of array-level domain constraints
--
create domain orderedpair as int[2] check (value[1] < value[2]);
select array[1,2]::orderedpair;
 array 
-------
 {1,2}
(1 row)

select array[2,1]::orderedpair;  -- fail
ERROR:  value for domain orderedpair violates check constraint "orderedpair_check"
create temp table op (f1 orderedpair);
insert into op values (array[1,2]);
insert into op values (array[2,1]);  -- fail
ERROR:  value for domain orderedpair violates check constraint "orderedpair_check"
update op set f1[2] = 3;
update op set f1[2] = 0;  -- fail
ERROR:  value for domain orderedpair violates check constraint "orderedpair_check"
select * from op;
  f1   
-------
 {1,3}
(1 row)

create or replace function array_elem_check(int) returns int as $$
declare
  x orderedpair := '{1,2}';
begin
  x[2] := $1;
  return x[2];
end$$ language plpgsql;
select array_elem_check(3);
 array_elem_check 
------------------
                3
(1 row)

select array_elem_check(-1);
ERROR:  value for domain orderedpair violates check constraint "orderedpair_check"
CONTEXT:  PL/pgSQL function array_elem_check(integer) line 5 at assignment
drop function array_elem_check(int);
--
-- Renaming
--
create domain testdomain1 as int;
alter domain testdomain1 rename to testdomain2;
alter type testdomain2 rename to testdomain3;  -- alter type also works
drop domain testdomain3;
--
-- Renaming domain constraints
--
create domain testdomain1 as int constraint unsigned check (value > 0);
alter domain testdomain1 rename constraint unsigned to unsigned_foo;
alter domain testdomain1 drop constraint unsigned_foo;
drop domain testdomain1;