text: --
  -- Enum tests
  --
  
  CREATE TYPE rainbow AS ENUM ('red', 'orange', 'yellow', 'green', 'blue', 'purple');
  
  --
  -- Did it create the right number of rows?
  --
  SELECT COUNT(*) FROM pg_enum WHERE enumtypid = 'rainbow'::regtype;
  
  --
  -- I/O functions
  --
  SELECT 'red'::rainbow;
  SELECT 'mauve'::rainbow;
  
  --
  -- Basic table creation, row selection
  --
  CREATE TABLE enumtest (col rainbow);
  INSERT INTO enumtest values ('red'), ('orange'), ('yellow'), ('green');
  COPY enumtest FROM stdin;
  blue
  purple
  \.
  SELECT * FROM enumtest;
  
  --
  -- Operators, no index
  --
  SELECT * FROM enumtest WHERE col = 'orange';
  SELECT * FROM enumtest WHERE col <> 'orange' ORDER BY col;
  SELECT * FROM enumtest WHERE col > 'yellow' ORDER BY col;
  SELECT * FROM enumtest WHERE col >= 'yellow' ORDER BY col;
  SELECT * FROM enumtest WHERE col < 'green' ORDER BY col;
  SELECT * FROM enumtest WHERE col <= 'green' ORDER BY col;
  
  --
  -- Cast to/from text
  --
  SELECT 'red'::rainbow::text || 'hithere';
  SELECT 'red'::text::rainbow = 'red'::rainbow;
  
  --
  -- Aggregates
  --
  SELECT min(col) FROM enumtest;
  SELECT max(col) FROM enumtest;
  SELECT max(col) FROM enumtest WHERE col < 'green';
  
  --
  -- Index tests, force use of index
  --
  SET enable_seqscan = off;
  SET enable_bitmapscan = off;
  
  --
  -- Btree index / opclass with the various operators
  --
  CREATE UNIQUE INDEX enumtest_btree ON enumtest USING btree (col);
  SELECT * FROM enumtest WHERE col = 'orange';
  SELECT * FROM enumtest WHERE col <> 'orange' ORDER BY col;
  SELECT * FROM enumtest WHERE col > 'yellow' ORDER BY col;
  SELECT * FROM enumtest WHERE col >= 'yellow' ORDER BY col;
  SELECT * FROM enumtest WHERE col < 'green' ORDER BY col;
  SELECT * FROM enumtest WHERE col <= 'green' ORDER BY col;
  SELECT min(col) FROM enumtest;
  SELECT max(col) FROM enumtest;
  SELECT max(col) FROM enumtest WHERE col < 'green';
  DROP INDEX enumtest_btree;
  
  --
  -- Hash index / opclass with the = operator
  --
  CREATE INDEX enumtest_hash ON enumtest USING hash (col);
  SELECT * FROM enumtest WHERE col = 'orange';
  DROP INDEX enumtest_hash;
  
  --
  -- End index tests
  --
  RESET enable_seqscan;
  RESET enable_bitmapscan;
  
  --
  -- Domains over enums
  --
  CREATE DOMAIN rgb AS rainbow CHECK (VALUE IN ('red', 'green', 'blue'));
  SELECT 'red'::rgb;
  SELECT 'purple'::rgb;
  SELECT 'purple'::rainbow::rgb;
  DROP DOMAIN rgb;
  
  --
  -- Arrays
  --
  SELECT '{red,green,blue}'::rainbow[];
  SELECT ('{red,green,blue}'::rainbow[])[2];
  SELECT 'red' = ANY ('{red,green,blue}'::rainbow[]);
  SELECT 'yellow' = ANY ('{red,green,blue}'::rainbow[]);
  SELECT 'red' = ALL ('{red,green,blue}'::rainbow[]);
  SELECT 'red' = ALL ('{red,red}'::rainbow[]);
  
  --
  -- Support functions
  --
  SELECT enum_first(NULL::rainbow);
  SELECT enum_last('green'::rainbow);
  SELECT enum_range(NULL::rainbow);
  SELECT enum_range('orange'::rainbow, 'green'::rainbow);
  SELECT enum_range(NULL, 'green'::rainbow);
  SELECT enum_range('orange'::rainbow, NULL);
  SELECT enum_range(NULL::rainbow, NULL);
  
  --
  -- User functions, can't test perl/python etc here since may not be compiled.
  --
  CREATE FUNCTION echo_me(anyenum) RETURNS text AS $$
  BEGIN
  RETURN $1::text || 'omg';
  END
  $$ LANGUAGE plpgsql;
  SELECT echo_me('red'::rainbow);
  --
  -- Concrete function should override generic one
  --
  CREATE FUNCTION echo_me(rainbow) RETURNS text AS $$
  BEGIN
  RETURN $1::text || 'wtf';
  END
  $$ LANGUAGE plpgsql;
  SELECT echo_me('red'::rainbow);
  --
  -- If we drop the original generic one, we don't have to qualify the type
  -- anymore, since there's only one match
  --
  DROP FUNCTION echo_me(anyenum);
  SELECT echo_me('red');
  DROP FUNCTION echo_me(rainbow);
  
  --
  -- RI triggers on enum types
  --
  CREATE TABLE enumtest_parent (id rainbow PRIMARY KEY);
  CREATE TABLE enumtest_child (parent rainbow REFERENCES enumtest_parent);
  INSERT INTO enumtest_parent VALUES ('red');
  INSERT INTO enumtest_child VALUES ('red');
  INSERT INTO enumtest_child VALUES ('blue');  -- fail
  DELETE FROM enumtest_parent;  -- fail
  --
  -- cross-type RI should fail
  --
  CREATE TYPE bogus AS ENUM('good', 'bad', 'ugly');
  CREATE TABLE enumtest_bogus_child(parent bogus REFERENCES enumtest_parent);
  DROP TYPE bogus;
  
  --
  -- Cleanup
  --
  DROP TABLE enumtest_child;
  DROP TABLE enumtest_parent;
  DROP TABLE enumtest;
  DROP TYPE rainbow;
  
  --
  -- Verify properly cleaned up
  --
  SELECT COUNT(*) FROM pg_type WHERE typname = 'rainbow';
  SELECT * FROM pg_enum WHERE NOT EXISTS
    (SELECT 1 FROM pg_type WHERE pg_type.oid = enumtypid);
  