text: -- create a table to use as a basis for views and materialized views in various combinations
  CREATE TABLE mvtest_t (id int NOT NULL PRIMARY KEY, type text NOT NULL, amt numeric NOT NULL);
  INSERT INTO mvtest_t VALUES
    (1, 'x', 2),
    (2, 'x', 3),
    (3, 'y', 5),
    (4, 'y', 7),
    (5, 'z', 11);
  
  -- we want a view based on the table, too, since views present additional challenges
  CREATE VIEW mvtest_tv AS SELECT type, sum(amt) AS totamt FROM mvtest_t GROUP BY type;
  SELECT * FROM mvtest_tv ORDER BY type;
  
  -- create a materialized view with no data, and confirm correct behavior
  EXPLAIN (costs off)
    CREATE MATERIALIZED VIEW mvtest_tm AS SELECT type, sum(amt) AS totamt FROM mvtest_t GROUP BY type WITH NO DATA;
  CREATE MATERIALIZED VIEW mvtest_tm AS SELECT type, sum(amt) AS totamt FROM mvtest_t GROUP BY type WITH NO DATA;
  SELECT relispopulated FROM pg_class WHERE oid = 'mvtest_tm'::regclass;
  SELECT * FROM mvtest_tm;
  REFRESH MATERIALIZED VIEW mvtest_tm;
  SELECT relispopulated FROM pg_class WHERE oid = 'mvtest_tm'::regclass;
  CREATE UNIQUE INDEX mvtest_tm_type ON mvtest_tm (type);
  SELECT * FROM mvtest_tm;
  
  -- create various views
  EXPLAIN (costs off)
    CREATE MATERIALIZED VIEW mvtest_tvm AS SELECT * FROM mvtest_tv ORDER BY type;
  CREATE MATERIALIZED VIEW mvtest_tvm AS SELECT * FROM mvtest_tv ORDER BY type;
  SELECT * FROM mvtest_tvm;
  CREATE MATERIALIZED VIEW mvtest_tmm AS SELECT sum(totamt) AS grandtot FROM mvtest_tm;
  CREATE MATERIALIZED VIEW mvtest_tvmm AS SELECT sum(totamt) AS grandtot FROM mvtest_tvm;
  CREATE UNIQUE INDEX mvtest_tvmm_expr ON mvtest_tvmm ((grandtot > 0));
  CREATE UNIQUE INDEX mvtest_tvmm_pred ON mvtest_tvmm (grandtot) WHERE grandtot < 0;
  CREATE VIEW mvtest_tvv AS SELECT sum(totamt) AS grandtot FROM mvtest_tv;
  EXPLAIN (costs off)
    CREATE MATERIALIZED VIEW mvtest_tvvm AS SELECT * FROM mvtest_tvv;
  CREATE MATERIALIZED VIEW mvtest_tvvm AS SELECT * FROM mvtest_tvv;
  CREATE VIEW mvtest_tvvmv AS SELECT * FROM mvtest_tvvm;
  CREATE MATERIALIZED VIEW mvtest_bb AS SELECT * FROM mvtest_tvvmv;
  CREATE INDEX mvtest_aa ON mvtest_bb (grandtot);
  
  -- check that plans seem reasonable
  
  
  
  
  
  
  
  
  
  -- test schema behavior
  CREATE SCHEMA mvtest_mvschema;
  ALTER MATERIALIZED VIEW mvtest_tvm SET SCHEMA mvtest_mvschema;
  
  
  
  
  SET search_path = mvtest_mvschema, public;
  
  
  
  -- modify the underlying table data
  INSERT INTO mvtest_t VALUES (6, 'z', 13);
  
  -- confirm pre- and post-refresh contents of fairly simple materialized views
  SELECT * FROM mvtest_tm ORDER BY type;
  SELECT * FROM mvtest_tvm ORDER BY type;
  REFRESH MATERIALIZED VIEW CONCURRENTLY mvtest_tm;
  REFRESH MATERIALIZED VIEW mvtest_tvm;
  SELECT * FROM mvtest_tm ORDER BY type;
  SELECT * FROM mvtest_tvm ORDER BY type;
  RESET search_path;
  
  -- confirm pre- and post-refresh contents of nested materialized views
  EXPLAIN (costs off)
    SELECT * FROM mvtest_tmm;
  EXPLAIN (costs off)
    SELECT * FROM mvtest_tvmm;
  EXPLAIN (costs off)
    SELECT * FROM mvtest_tvvm;
  SELECT * FROM mvtest_tmm;
  SELECT * FROM mvtest_tvmm;
  SELECT * FROM mvtest_tvvm;
  REFRESH MATERIALIZED VIEW mvtest_tmm;
  REFRESH MATERIALIZED VIEW CONCURRENTLY mvtest_tvmm;
  REFRESH MATERIALIZED VIEW mvtest_tvmm;
  REFRESH MATERIALIZED VIEW mvtest_tvvm;
  EXPLAIN (costs off)
    SELECT * FROM mvtest_tmm;
  EXPLAIN (costs off)
    SELECT * FROM mvtest_tvmm;
  EXPLAIN (costs off)
    SELECT * FROM mvtest_tvvm;
  SELECT * FROM mvtest_tmm;
  SELECT * FROM mvtest_tvmm;
  SELECT * FROM mvtest_tvvm;
  
  -- test diemv when the mv does not exist
  DROP MATERIALIZED VIEW IF EXISTS no_such_mv;
  
  -- make sure invalid comination of options is prohibited
  REFRESH MATERIALIZED VIEW CONCURRENTLY mvtest_tvmm WITH NO DATA;
  
  -- no tuple locks on materialized views
  SELECT * FROM mvtest_tvvm FOR SHARE;
  
  -- test join of mv and view
  SELECT type, m.totamt AS mtot, v.totamt AS vtot FROM mvtest_tm m LEFT JOIN mvtest_tv v USING (type) ORDER BY type;
  
  -- make sure that dependencies are reported properly when they block the drop
  DROP TABLE mvtest_t;
  
  -- make sure dependencies are dropped and reported
  -- and make sure that transactional behavior is correct on rollback
  -- incidentally leaving some interesting materialized views for pg_dump testing
  BEGIN;
  DROP TABLE mvtest_t CASCADE;
  ROLLBACK;
  
  -- some additional tests not using base tables
  CREATE VIEW mvtest_vt1 AS SELECT 1 moo;
  CREATE VIEW mvtest_vt2 AS SELECT moo, 2*moo FROM mvtest_vt1 UNION ALL SELECT moo, 3*moo FROM mvtest_vt1;
  
  
  CREATE MATERIALIZED VIEW mv_test2 AS SELECT moo, 2*moo FROM mvtest_vt2 UNION ALL SELECT moo, 3*moo FROM mvtest_vt2;
  
  
  CREATE MATERIALIZED VIEW mv_test3 AS SELECT * FROM mv_test2 WHERE moo = 12345;
  SELECT relispopulated FROM pg_class WHERE oid = 'mv_test3'::regclass;
  
  DROP VIEW mvtest_vt1 CASCADE;
  
  -- test that vacuum does not make empty matview look unpopulated
  CREATE TABLE mvtest_huge (i int);
  INSERT INTO mvtest_huge VALUES (generate_series(1,100000));
  CREATE MATERIALIZED VIEW mvtest_hugeview AS SELECT * FROM mvtest_huge WHERE i % 2 = 0;
  CREATE INDEX mvtest_hugeviewidx ON mvtest_hugeview (i);
  DELETE FROM mvtest_huge;
  REFRESH MATERIALIZED VIEW mvtest_hugeview;
  SELECT * FROM mvtest_hugeview WHERE i < 10;
  VACUUM ANALYZE mvtest_hugeview;
  SELECT * FROM mvtest_hugeview WHERE i < 10;
  DROP TABLE mvtest_huge CASCADE;
  
  -- test that duplicate values on unique index prevent refresh
  CREATE TABLE mvtest_foo(a, b) AS VALUES(1, 10);
  CREATE MATERIALIZED VIEW mvtest_mv AS SELECT * FROM mvtest_foo;
  CREATE UNIQUE INDEX ON mvtest_mv(a);
  INSERT INTO mvtest_foo SELECT * FROM mvtest_foo;
  REFRESH MATERIALIZED VIEW mvtest_mv;
  REFRESH MATERIALIZED VIEW CONCURRENTLY mvtest_mv;
  DROP TABLE mvtest_foo CASCADE;
  
  -- make sure that all columns covered by unique indexes works
  CREATE TABLE mvtest_foo(a, b, c) AS VALUES(1, 2, 3);
  CREATE MATERIALIZED VIEW mvtest_mv AS SELECT * FROM mvtest_foo;
  CREATE UNIQUE INDEX ON mvtest_mv (a);
  CREATE UNIQUE INDEX ON mvtest_mv (b);
  CREATE UNIQUE INDEX on mvtest_mv (c);
  INSERT INTO mvtest_foo VALUES(2, 3, 4);
  INSERT INTO mvtest_foo VALUES(3, 4, 5);
  REFRESH MATERIALIZED VIEW mvtest_mv;
  REFRESH MATERIALIZED VIEW CONCURRENTLY mvtest_mv;
  DROP TABLE mvtest_foo CASCADE;
  
  -- allow subquery to reference unpopulated matview if WITH NO DATA is specified
  CREATE MATERIALIZED VIEW mvtest_mv1 AS SELECT 1 AS col1 WITH NO DATA;
  CREATE MATERIALIZED VIEW mvtest_mv2 AS SELECT * FROM mvtest_mv1
    WHERE col1 = (SELECT LEAST(col1) FROM mvtest_mv1) WITH NO DATA;
  DROP MATERIALIZED VIEW mvtest_mv1 CASCADE;
  
  -- make sure that types with unusual equality tests work
  CREATE TABLE mvtest_boxes (id serial primary key, b box);
  INSERT INTO mvtest_boxes (b) VALUES
    ('(32,32),(31,31)'),
    ('(2.0000004,2.0000004),(1,1)'),
    ('(1.9999996,1.9999996),(1,1)');
  CREATE MATERIALIZED VIEW mvtest_boxmv AS SELECT * FROM mvtest_boxes;
  CREATE UNIQUE INDEX mvtest_boxmv_id ON mvtest_boxmv (id);
  UPDATE mvtest_boxes SET b = '(2,2),(1,1)' WHERE id = 2;
  REFRESH MATERIALIZED VIEW CONCURRENTLY mvtest_boxmv;
  SELECT * FROM mvtest_boxmv ORDER BY id;
  DROP TABLE mvtest_boxes CASCADE;
  
  -- make sure that column names are handled correctly
  CREATE TABLE mvtest_v (i int, j int);
  CREATE MATERIALIZED VIEW mvtest_mv_v (ii) AS SELECT i, j AS jj FROM mvtest_v;
  ALTER TABLE mvtest_v RENAME COLUMN i TO x;
  INSERT INTO mvtest_v values (1, 2);
  CREATE UNIQUE INDEX mvtest_mv_v_ii ON mvtest_mv_v (ii);
  REFRESH MATERIALIZED VIEW mvtest_mv_v;
  UPDATE mvtest_v SET j = 3 WHERE x = 1;
  REFRESH MATERIALIZED VIEW CONCURRENTLY mvtest_mv_v;
  SELECT * FROM mvtest_v;
  SELECT * FROM mvtest_mv_v;
  DROP TABLE mvtest_v CASCADE;
  
  -- make sure that matview rows can be referenced as source rows (bug #9398)
  CREATE TABLE mvtest_v AS SELECT generate_series(1,10) AS a;
  CREATE MATERIALIZED VIEW mvtest_mv_v AS SELECT a FROM mvtest_v WHERE a <= 5;
  DELETE FROM mvtest_v WHERE EXISTS ( SELECT * FROM mvtest_mv_v WHERE mvtest_mv_v.a = mvtest_v.a );
  SELECT * FROM mvtest_v;
  SELECT * FROM mvtest_mv_v;
  DROP TABLE mvtest_v CASCADE;
  
  -- make sure running as superuser works when MV owned by another role (bug #11208)
  CREATE ROLE regress_user_mvtest;
  SET ROLE regress_user_mvtest;
  CREATE TABLE mvtest_foo_data AS SELECT i, md5(random()::text)
    FROM generate_series(1, 10) i;
  CREATE MATERIALIZED VIEW mvtest_mv_foo AS SELECT * FROM mvtest_foo_data;
  CREATE MATERIALIZED VIEW mvtest_mv_foo AS SELECT * FROM mvtest_foo_data;
  CREATE MATERIALIZED VIEW IF NOT EXISTS mvtest_mv_foo AS SELECT * FROM mvtest_foo_data;
  CREATE UNIQUE INDEX ON mvtest_mv_foo (i);
  RESET ROLE;
  REFRESH MATERIALIZED VIEW mvtest_mv_foo;
  REFRESH MATERIALIZED VIEW CONCURRENTLY mvtest_mv_foo;
  DROP OWNED BY regress_user_mvtest CASCADE;
  DROP ROLE regress_user_mvtest;
  