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pg_ivm/expected/pg_ivm.out
Yugo Nagata 6faf0b3baa
Support min/max aggregates (#18) 
In order to re-calculate min/max values for groups where the min
or max value is deleted, we need the view query definition in string
form. However, pg_get_viewdef cannot be used for this purpose because
IMMV's defenition is in pg_ivm_immv but not pg_rewrite.  Therefore,
we have to convert query definition in pg_ivm_immv to query
definition string. We can use pg_get_querydef in PG15, but we cannot
in PG14 or earlier, so we use codes in ruleutil.c copied from PG13
or PG14 depending versions.
2022-07-25 13:11:33 +09:00

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CREATE EXTENSION pg_ivm;
GRANT ALL ON SCHEMA public TO public;
-- create a table to use as a basis for views and materialized views in various combinations
CREATE TABLE mv_base_a (i int, j int);
INSERT INTO mv_base_a VALUES
(1,10),
(2,20),
(3,30),
(4,40),
(5,50);
CREATE TABLE mv_base_b (i int, k int);
INSERT INTO mv_base_b VALUES
(1,101),
(2,102),
(3,103),
(4,104);
-- CREATE INCREMENTAL MATERIALIZED VIEW mv_ivm_1 AS SELECT i,j,k FROM mv_base_a a INNER JOIN mv_base_b b USING(i) WITH NO DATA;
SELECT create_immv('mv_ivm_1', 'SELECT i,j,k FROM mv_base_a a INNER JOIN mv_base_b b USING(i)');
NOTICE: could not create an index on immv "mv_ivm_1" automatically
DETAIL: This target list does not have all the primary key columns, or this view does not contain GROUP BY or DISTINCT clause.
HINT: Create an index on the immv for efficient incremental maintenance.
create_immv
-------------
4
(1 row)
SELECT * FROM mv_ivm_1 ORDER BY 1,2,3;
i | j | k
---+----+-----
1 | 10 | 101
2 | 20 | 102
3 | 30 | 103
4 | 40 | 104
(4 rows)
-- immediate maintenance
BEGIN;
INSERT INTO mv_base_b VALUES(5,105);
SELECT * FROM mv_ivm_1 ORDER BY 1,2,3;
i | j | k
---+----+-----
1 | 10 | 101
2 | 20 | 102
3 | 30 | 103
4 | 40 | 104
5 | 50 | 105
(5 rows)
UPDATE mv_base_a SET j = 0 WHERE i = 1;
SELECT * FROM mv_ivm_1 ORDER BY 1,2,3;
i | j | k
---+----+-----
1 | 0 | 101
2 | 20 | 102
3 | 30 | 103
4 | 40 | 104
5 | 50 | 105
(5 rows)
DELETE FROM mv_base_b WHERE (i,k) = (5,105);
SELECT * FROM mv_ivm_1 ORDER BY 1,2,3;
i | j | k
---+----+-----
1 | 0 | 101
2 | 20 | 102
3 | 30 | 103
4 | 40 | 104
(4 rows)
ROLLBACK;
SELECT * FROM mv_ivm_1 ORDER BY 1,2,3;
i | j | k
---+----+-----
1 | 10 | 101
2 | 20 | 102
3 | 30 | 103
4 | 40 | 104
(4 rows)
-- TRUNCATE a base table in join views
BEGIN;
TRUNCATE mv_base_a;
SELECT * FROM mv_ivm_1;
i | j | k
---+---+---
(0 rows)
ROLLBACK;
BEGIN;
TRUNCATE mv_base_b;
SELECT * FROM mv_ivm_1;
i | j | k
---+---+---
(0 rows)
ROLLBACK;
-- some query syntax
BEGIN;
CREATE FUNCTION ivm_func() RETURNS int LANGUAGE 'sql'
AS 'SELECT 1' IMMUTABLE;
SELECT create_immv('mv_ivm_func', 'SELECT * FROM ivm_func()');
NOTICE: could not create an index on immv "mv_ivm_func" automatically
DETAIL: This target list does not have all the primary key columns, or this view does not contain GROUP BY or DISTINCT clause.
HINT: Create an index on the immv for efficient incremental maintenance.
create_immv
-------------
1
(1 row)
SELECT create_immv('mv_ivm_no_tbl', 'SELECT 1');
NOTICE: could not create an index on immv "mv_ivm_no_tbl" automatically
DETAIL: This target list does not have all the primary key columns, or this view does not contain GROUP BY or DISTINCT clause.
HINT: Create an index on the immv for efficient incremental maintenance.
create_immv
-------------
1
(1 row)
ROLLBACK;
-- result of materialized view have DISTINCT clause or the duplicate result.
BEGIN;
SELECT create_immv('mv_ivm_duplicate', 'SELECT j FROM mv_base_a');
NOTICE: could not create an index on immv "mv_ivm_duplicate" automatically
DETAIL: This target list does not have all the primary key columns, or this view does not contain GROUP BY or DISTINCT clause.
HINT: Create an index on the immv for efficient incremental maintenance.
create_immv
-------------
5
(1 row)
SELECT create_immv('mv_ivm_distinct', 'SELECT DISTINCT j FROM mv_base_a');
NOTICE: created index "mv_ivm_distinct_index" on immv "mv_ivm_distinct"
create_immv
-------------
5
(1 row)
INSERT INTO mv_base_a VALUES(6,20);
SELECT * FROM mv_ivm_duplicate ORDER BY 1;
j
----
10
20
20
30
40
50
(6 rows)
SELECT * FROM mv_ivm_distinct ORDER BY 1;
j | __ivm_count__
----+---------------
10 | 1
20 | 2
30 | 1
40 | 1
50 | 1
(5 rows)
DELETE FROM mv_base_a WHERE (i,j) = (2,20);
SELECT * FROM mv_ivm_duplicate ORDER BY 1;
j
----
10
20
30
40
50
(5 rows)
SELECT * FROM mv_ivm_distinct ORDER BY 1;
j | __ivm_count__
----+---------------
10 | 1
20 | 1
30 | 1
40 | 1
50 | 1
(5 rows)
ROLLBACK;
-- support SUM(), COUNT() and AVG() aggregate functions
BEGIN;
SELECT create_immv('mv_ivm_agg', 'SELECT i, SUM(j), COUNT(i), AVG(j) FROM mv_base_a GROUP BY i');
NOTICE: created index "mv_ivm_agg_index" on immv "mv_ivm_agg"
create_immv
-------------
5
(1 row)
SELECT * FROM mv_ivm_agg ORDER BY 1,2,3,4;
i | sum | count | avg | __ivm_count_sum__ | __ivm_count_avg__ | __ivm_sum_avg__ | __ivm_count__
---+-----+-------+---------------------+-------------------+-------------------+-----------------+---------------
1 | 10 | 1 | 10.0000000000000000 | 1 | 1 | 10 | 1
2 | 20 | 1 | 20.0000000000000000 | 1 | 1 | 20 | 1
3 | 30 | 1 | 30.0000000000000000 | 1 | 1 | 30 | 1
4 | 40 | 1 | 40.0000000000000000 | 1 | 1 | 40 | 1
5 | 50 | 1 | 50.0000000000000000 | 1 | 1 | 50 | 1
(5 rows)
INSERT INTO mv_base_a VALUES(2,100);
SELECT * FROM mv_ivm_agg ORDER BY 1,2,3,4;
i | sum | count | avg | __ivm_count_sum__ | __ivm_count_avg__ | __ivm_sum_avg__ | __ivm_count__
---+-----+-------+---------------------+-------------------+-------------------+-----------------+---------------
1 | 10 | 1 | 10.0000000000000000 | 1 | 1 | 10 | 1
2 | 120 | 2 | 60.0000000000000000 | 2 | 2 | 120 | 2
3 | 30 | 1 | 30.0000000000000000 | 1 | 1 | 30 | 1
4 | 40 | 1 | 40.0000000000000000 | 1 | 1 | 40 | 1
5 | 50 | 1 | 50.0000000000000000 | 1 | 1 | 50 | 1
(5 rows)
UPDATE mv_base_a SET j = 200 WHERE (i,j) = (2,100);
SELECT * FROM mv_ivm_agg ORDER BY 1,2,3,4;
i | sum | count | avg | __ivm_count_sum__ | __ivm_count_avg__ | __ivm_sum_avg__ | __ivm_count__
---+-----+-------+----------------------+-------------------+-------------------+-----------------+---------------
1 | 10 | 1 | 10.0000000000000000 | 1 | 1 | 10 | 1
2 | 220 | 2 | 110.0000000000000000 | 2 | 2 | 220 | 2
3 | 30 | 1 | 30.0000000000000000 | 1 | 1 | 30 | 1
4 | 40 | 1 | 40.0000000000000000 | 1 | 1 | 40 | 1
5 | 50 | 1 | 50.0000000000000000 | 1 | 1 | 50 | 1
(5 rows)
DELETE FROM mv_base_a WHERE (i,j) = (2,200);
SELECT * FROM mv_ivm_agg ORDER BY 1,2,3,4;
i | sum | count | avg | __ivm_count_sum__ | __ivm_count_avg__ | __ivm_sum_avg__ | __ivm_count__
---+-----+-------+---------------------+-------------------+-------------------+-----------------+---------------
1 | 10 | 1 | 10.0000000000000000 | 1 | 1 | 10 | 1
2 | 20 | 1 | 20.0000000000000000 | 1 | 1 | 20 | 1
3 | 30 | 1 | 30.0000000000000000 | 1 | 1 | 30 | 1
4 | 40 | 1 | 40.0000000000000000 | 1 | 1 | 40 | 1
5 | 50 | 1 | 50.0000000000000000 | 1 | 1 | 50 | 1
(5 rows)
ROLLBACK;
-- support COUNT(*) aggregate function
BEGIN;
SELECT create_immv('mv_ivm_agg', 'SELECT i, SUM(j), COUNT(*) FROM mv_base_a GROUP BY i');
NOTICE: created index "mv_ivm_agg_index" on immv "mv_ivm_agg"
create_immv
-------------
5
(1 row)
SELECT * FROM mv_ivm_agg ORDER BY 1,2,3;
i | sum | count | __ivm_count_sum__ | __ivm_count__
---+-----+-------+-------------------+---------------
1 | 10 | 1 | 1 | 1
2 | 20 | 1 | 1 | 1
3 | 30 | 1 | 1 | 1
4 | 40 | 1 | 1 | 1
5 | 50 | 1 | 1 | 1
(5 rows)
INSERT INTO mv_base_a VALUES(2,100);
SELECT * FROM mv_ivm_agg ORDER BY 1,2,3;
i | sum | count | __ivm_count_sum__ | __ivm_count__
---+-----+-------+-------------------+---------------
1 | 10 | 1 | 1 | 1
2 | 120 | 2 | 2 | 2
3 | 30 | 1 | 1 | 1
4 | 40 | 1 | 1 | 1
5 | 50 | 1 | 1 | 1
(5 rows)
ROLLBACK;
-- TRUNCATE a base table in aggregate views
BEGIN;
SELECT create_immv('mv_ivm_agg', 'SELECT i, SUM(j), COUNT(*) FROM mv_base_a GROUP BY i');
NOTICE: created index "mv_ivm_agg_index" on immv "mv_ivm_agg"
create_immv
-------------
5
(1 row)
TRUNCATE mv_base_a;
SELECT sum, count FROM mv_ivm_agg;
sum | count
-----+-------
(0 rows)
SELECT i, SUM(j), COUNT(*) FROM mv_base_a GROUP BY i;
i | sum | count
---+-----+-------
(0 rows)
ROLLBACK;
-- support aggregate functions without GROUP clause
BEGIN;
SELECT create_immv('mv_ivm_group', 'SELECT SUM(j), COUNT(j), AVG(j) FROM mv_base_a');
NOTICE: could not create an index on immv "mv_ivm_group" automatically
DETAIL: This target list does not have all the primary key columns, or this view does not contain GROUP BY or DISTINCT clause.
HINT: Create an index on the immv for efficient incremental maintenance.
create_immv
-------------
1
(1 row)
SELECT * FROM mv_ivm_group ORDER BY 1;
sum | count | avg | __ivm_count_sum__ | __ivm_count_avg__ | __ivm_sum_avg__ | __ivm_count__
-----+-------+---------------------+-------------------+-------------------+-----------------+---------------
150 | 5 | 30.0000000000000000 | 5 | 5 | 150 | 5
(1 row)
INSERT INTO mv_base_a VALUES(6,60);
SELECT * FROM mv_ivm_group ORDER BY 1;
sum | count | avg | __ivm_count_sum__ | __ivm_count_avg__ | __ivm_sum_avg__ | __ivm_count__
-----+-------+---------------------+-------------------+-------------------+-----------------+---------------
210 | 6 | 35.0000000000000000 | 6 | 6 | 210 | 6
(1 row)
DELETE FROM mv_base_a;
SELECT * FROM mv_ivm_group ORDER BY 1;
sum | count | avg | __ivm_count_sum__ | __ivm_count_avg__ | __ivm_sum_avg__ | __ivm_count__
-----+-------+-----+-------------------+-------------------+-----------------+---------------
| 0 | | 0 | 0 | | 0
(1 row)
ROLLBACK;
-- TRUNCATE a base table in aggregate views without GROUP clause
BEGIN;
SELECT create_immv('mv_ivm_group', 'SELECT SUM(j), COUNT(j), AVG(j) FROM mv_base_a');
NOTICE: could not create an index on immv "mv_ivm_group" automatically
DETAIL: This target list does not have all the primary key columns, or this view does not contain GROUP BY or DISTINCT clause.
HINT: Create an index on the immv for efficient incremental maintenance.
create_immv
-------------
1
(1 row)
TRUNCATE mv_base_a;
SELECT sum, count, avg FROM mv_ivm_group;
sum | count | avg
-----+-------+-----
| 0 |
(1 row)
SELECT SUM(j), COUNT(j), AVG(j) FROM mv_base_a;
sum | count | avg
-----+-------+-----
| 0 |
(1 row)
ROLLBACK;
-- resolved issue: When use AVG() function and values is indivisible, result of AVG() is incorrect.
BEGIN;
SELECT create_immv('mv_ivm_avg_bug', 'SELECT i, SUM(j), COUNT(j), AVG(j) FROM mv_base_A GROUP BY i');
NOTICE: created index "mv_ivm_avg_bug_index" on immv "mv_ivm_avg_bug"
create_immv
-------------
5
(1 row)
SELECT * FROM mv_ivm_avg_bug ORDER BY 1,2,3;
i | sum | count | avg | __ivm_count_sum__ | __ivm_count_avg__ | __ivm_sum_avg__ | __ivm_count__
---+-----+-------+---------------------+-------------------+-------------------+-----------------+---------------
1 | 10 | 1 | 10.0000000000000000 | 1 | 1 | 10 | 1
2 | 20 | 1 | 20.0000000000000000 | 1 | 1 | 20 | 1
3 | 30 | 1 | 30.0000000000000000 | 1 | 1 | 30 | 1
4 | 40 | 1 | 40.0000000000000000 | 1 | 1 | 40 | 1
5 | 50 | 1 | 50.0000000000000000 | 1 | 1 | 50 | 1
(5 rows)
INSERT INTO mv_base_a VALUES
(1,0),
(1,0),
(2,30),
(2,30);
SELECT * FROM mv_ivm_avg_bug ORDER BY 1,2,3;
i | sum | count | avg | __ivm_count_sum__ | __ivm_count_avg__ | __ivm_sum_avg__ | __ivm_count__
---+-----+-------+---------------------+-------------------+-------------------+-----------------+---------------
1 | 10 | 3 | 3.3333333333333333 | 3 | 3 | 10 | 3
2 | 80 | 3 | 26.6666666666666667 | 3 | 3 | 80 | 3
3 | 30 | 1 | 30.0000000000000000 | 1 | 1 | 30 | 1
4 | 40 | 1 | 40.0000000000000000 | 1 | 1 | 40 | 1
5 | 50 | 1 | 50.0000000000000000 | 1 | 1 | 50 | 1
(5 rows)
DELETE FROM mv_base_a WHERE (i,j) = (1,0);
DELETE FROM mv_base_a WHERE (i,j) = (2,30);
SELECT * FROM mv_ivm_avg_bug ORDER BY 1,2,3;
i | sum | count | avg | __ivm_count_sum__ | __ivm_count_avg__ | __ivm_sum_avg__ | __ivm_count__
---+-----+-------+---------------------+-------------------+-------------------+-----------------+---------------
1 | 10 | 1 | 10.0000000000000000 | 1 | 1 | 10 | 1
2 | 20 | 1 | 20.0000000000000000 | 1 | 1 | 20 | 1
3 | 30 | 1 | 30.0000000000000000 | 1 | 1 | 30 | 1
4 | 40 | 1 | 40.0000000000000000 | 1 | 1 | 40 | 1
5 | 50 | 1 | 50.0000000000000000 | 1 | 1 | 50 | 1
(5 rows)
ROLLBACK;
-- support MIN(), MAX() aggregate functions
BEGIN;
SELECT create_immv('mv_ivm_min_max', 'SELECT i, MIN(j), MAX(j) FROM mv_base_a GROUP BY i');
NOTICE: created index "mv_ivm_min_max_index" on immv "mv_ivm_min_max"
create_immv
-------------
5
(1 row)
SELECT * FROM mv_ivm_min_max ORDER BY 1,2,3;
i | min | max | __ivm_count_min__ | __ivm_count_max__ | __ivm_count__
---+-----+-----+-------------------+-------------------+---------------
1 | 10 | 10 | 1 | 1 | 1
2 | 20 | 20 | 1 | 1 | 1
3 | 30 | 30 | 1 | 1 | 1
4 | 40 | 40 | 1 | 1 | 1
5 | 50 | 50 | 1 | 1 | 1
(5 rows)
INSERT INTO mv_base_a VALUES
(1,11), (1,12),
(2,21), (2,22),
(3,31), (3,32),
(4,41), (4,42),
(5,51), (5,52);
SELECT * FROM mv_ivm_min_max ORDER BY 1,2,3;
i | min | max | __ivm_count_min__ | __ivm_count_max__ | __ivm_count__
---+-----+-----+-------------------+-------------------+---------------
1 | 10 | 12 | 3 | 3 | 3
2 | 20 | 22 | 3 | 3 | 3
3 | 30 | 32 | 3 | 3 | 3
4 | 40 | 42 | 3 | 3 | 3
5 | 50 | 52 | 3 | 3 | 3
(5 rows)
DELETE FROM mv_base_a WHERE (i,j) IN ((1,10), (2,21), (3,32));
SELECT * FROM mv_ivm_min_max ORDER BY 1,2,3;
i | min | max | __ivm_count_min__ | __ivm_count_max__ | __ivm_count__
---+-----+-----+-------------------+-------------------+---------------
1 | 11 | 12 | 2 | 2 | 2
2 | 20 | 22 | 2 | 2 | 2
3 | 30 | 31 | 2 | 2 | 2
4 | 40 | 42 | 3 | 3 | 3
5 | 50 | 52 | 3 | 3 | 3
(5 rows)
ROLLBACK;
-- support MIN(), MAX() aggregate functions without GROUP clause
BEGIN;
SELECT create_immv('mv_ivm_min_max', 'SELECT MIN(j), MAX(j) FROM mv_base_a');
NOTICE: could not create an index on immv "mv_ivm_min_max" automatically
DETAIL: This target list does not have all the primary key columns, or this view does not contain GROUP BY or DISTINCT clause.
HINT: Create an index on the immv for efficient incremental maintenance.
create_immv
-------------
1
(1 row)
SELECT * FROM mv_ivm_min_max;
min | max | __ivm_count_min__ | __ivm_count_max__ | __ivm_count__
-----+-----+-------------------+-------------------+---------------
10 | 50 | 5 | 5 | 5
(1 row)
INSERT INTO mv_base_a VALUES
(0,0), (6,60), (7,70);
SELECT * FROM mv_ivm_min_max;
min | max | __ivm_count_min__ | __ivm_count_max__ | __ivm_count__
-----+-----+-------------------+-------------------+---------------
0 | 70 | 8 | 8 | 8
(1 row)
DELETE FROM mv_base_a WHERE (i,j) IN ((0,0), (7,70));
SELECT * FROM mv_ivm_min_max;
min | max | __ivm_count_min__ | __ivm_count_max__ | __ivm_count__
-----+-----+-------------------+-------------------+---------------
10 | 60 | 6 | 6 | 6
(1 row)
DELETE FROM mv_base_a;
SELECT * FROM mv_ivm_min_max;
min | max | __ivm_count_min__ | __ivm_count_max__ | __ivm_count__
-----+-----+-------------------+-------------------+---------------
| | 0 | 0 | 0
(1 row)
ROLLBACK;
-- support subquery in FROM clause
BEGIN;
SELECT create_immv('mv_ivm_subquery01', 'SELECT a.i,a.j FROM mv_base_a a, (SELECT * FROM mv_base_b) b WHERE a.i = b.i');
NOTICE: could not create an index on immv "mv_ivm_subquery01" automatically
DETAIL: This target list does not have all the primary key columns, or this view does not contain GROUP BY or DISTINCT clause.
HINT: Create an index on the immv for efficient incremental maintenance.
create_immv
-------------
4
(1 row)
SELECT * FROM mv_ivm_subquery01 ORDER BY 1,2;
i | j
---+----
1 | 10
2 | 20
3 | 30
4 | 40
(4 rows)
INSERT INTO mv_base_b VALUES(5,105);
SELECT * FROM mv_ivm_subquery01 ORDER BY 1,2;
i | j
---+----
1 | 10
2 | 20
3 | 30
4 | 40
5 | 50
(5 rows)
UPDATE mv_base_a SET j = 0 WHERE i = 1;
SELECT * FROM mv_ivm_subquery01 ORDER BY 1,2;
i | j
---+----
1 | 0
2 | 20
3 | 30
4 | 40
5 | 50
(5 rows)
DELETE FROM mv_base_b WHERE (i,k) = (5,105);
SELECT * FROM mv_ivm_subquery01 ORDER BY 1,2;
i | j
---+----
1 | 0
2 | 20
3 | 30
4 | 40
(4 rows)
ROLLBACK;
-- support self join view and multiple change on the same table
BEGIN;
CREATE TABLE base_t (i int, v int);
INSERT INTO base_t VALUES (1, 10), (2, 20), (3, 30);
SELECT create_immv('mv_self(v1, v2)',
'SELECT t1.v, t2.v FROM base_t AS t1 JOIN base_t AS t2 ON t1.i = t2.i');
NOTICE: could not create an index on immv "mv_self" automatically
DETAIL: This target list does not have all the primary key columns, or this view does not contain GROUP BY or DISTINCT clause.
HINT: Create an index on the immv for efficient incremental maintenance.
create_immv
-------------
3
(1 row)
SELECT * FROM mv_self ORDER BY v1;
v1 | v2
----+----
10 | 10
20 | 20
30 | 30
(3 rows)
INSERT INTO base_t VALUES (4,40);
DELETE FROM base_t WHERE i = 1;
UPDATE base_t SET v = v*10 WHERE i=2;
SELECT * FROM mv_self ORDER BY v1;
v1 | v2
-----+-----
30 | 30
40 | 40
200 | 200
(3 rows)
WITH
ins_t1 AS (INSERT INTO base_t VALUES (5,50) RETURNING 1),
ins_t2 AS (INSERT INTO base_t VALUES (6,60) RETURNING 1),
upd_t AS (UPDATE base_t SET v = v + 100 RETURNING 1),
dlt_t AS (DELETE FROM base_t WHERE i IN (4,5) RETURNING 1)
SELECT NULL;
?column?
----------
(1 row)
SELECT * FROM mv_self ORDER BY v1;
v1 | v2
-----+-----
50 | 50
60 | 60
130 | 130
300 | 300
(4 rows)
ROLLBACK;
-- support simultaneous table changes
BEGIN;
CREATE TABLE base_r (i int, v int);
CREATE TABLE base_s (i int, v int);
INSERT INTO base_r VALUES (1, 10), (2, 20), (3, 30);
INSERT INTO base_s VALUES (1, 100), (2, 200), (3, 300);
SELECT create_immv('mv(v1, v2)', 'SELECT r.v, s.v FROM base_r AS r JOIN base_s AS s USING(i)');;
NOTICE: could not create an index on immv "mv" automatically
DETAIL: This target list does not have all the primary key columns, or this view does not contain GROUP BY or DISTINCT clause.
HINT: Create an index on the immv for efficient incremental maintenance.
create_immv
-------------
3
(1 row)
SELECT * FROM mv ORDER BY v1;
v1 | v2
----+-----
10 | 100
20 | 200
30 | 300
(3 rows)
WITH
ins_r AS (INSERT INTO base_r VALUES (1,11) RETURNING 1),
ins_r2 AS (INSERT INTO base_r VALUES (3,33) RETURNING 1),
ins_s AS (INSERT INTO base_s VALUES (2,222) RETURNING 1),
upd_r AS (UPDATE base_r SET v = v + 1000 WHERE i = 2 RETURNING 1),
dlt_s AS (DELETE FROM base_s WHERE i = 3 RETURNING 1)
SELECT NULL;
?column?
----------
(1 row)
SELECT * FROM mv ORDER BY v1;
v1 | v2
------+-----
10 | 100
11 | 100
1020 | 200
1020 | 222
(4 rows)
-- support foreign reference constraints
BEGIN;
WARNING: there is already a transaction in progress
CREATE TABLE ri1 (i int PRIMARY KEY);
CREATE TABLE ri2 (i int PRIMARY KEY REFERENCES ri1(i) ON UPDATE CASCADE ON DELETE CASCADE, v int);
INSERT INTO ri1 VALUES (1),(2),(3);
INSERT INTO ri2 VALUES (1),(2),(3);
SELECT create_immv('mv_ri(i1, i2)', 'SELECT ri1.i, ri2.i FROM ri1 JOIN ri2 USING(i)');
NOTICE: created index "mv_ri_index" on immv "mv_ri"
create_immv
-------------
3
(1 row)
SELECT * FROM mv_ri ORDER BY i1;
i1 | i2
----+----
1 | 1
2 | 2
3 | 3
(3 rows)
UPDATE ri1 SET i=10 where i=1;
DELETE FROM ri1 WHERE i=2;
SELECT * FROM mv_ri ORDER BY i2;
i1 | i2
----+----
3 | 3
10 | 10
(2 rows)
ROLLBACK;
-- views including NULL
BEGIN;
CREATE TABLE base_t (i int, v int);
INSERT INTO base_t VALUES (1,10),(2, NULL);
SELECT create_immv('mv', 'SELECT * FROM base_t');
NOTICE: could not create an index on immv "mv" automatically
DETAIL: This target list does not have all the primary key columns, or this view does not contain GROUP BY or DISTINCT clause.
HINT: Create an index on the immv for efficient incremental maintenance.
create_immv
-------------
2
(1 row)
SELECT * FROM mv ORDER BY i;
i | v
---+----
1 | 10
2 |
(2 rows)
UPDATE base_t SET v = 20 WHERE i = 2;
SELECT * FROM mv ORDER BY i;
i | v
---+----
1 | 10
2 | 20
(2 rows)
ROLLBACK;
BEGIN;
CREATE TABLE base_t (i int);
SELECT create_immv('mv', 'SELECT * FROM base_t');
NOTICE: could not create an index on immv "mv" automatically
DETAIL: This target list does not have all the primary key columns, or this view does not contain GROUP BY or DISTINCT clause.
HINT: Create an index on the immv for efficient incremental maintenance.
create_immv
-------------
0
(1 row)
SELECT * FROM mv ORDER BY i;
i
---
(0 rows)
INSERT INTO base_t VALUES (1),(NULL);
SELECT * FROM mv ORDER BY i;
i
---
1
(2 rows)
ROLLBACK;
BEGIN;
CREATE TABLE base_t (i int, v int);
INSERT INTO base_t VALUES (NULL, 1), (NULL, 2), (1, 10), (1, 20);
SELECT create_immv('mv', 'SELECT i, sum(v) FROM base_t GROUP BY i');
NOTICE: created index "mv_index" on immv "mv"
create_immv
-------------
2
(1 row)
SELECT * FROM mv ORDER BY i;
i | sum | __ivm_count_sum__ | __ivm_count__
---+-----+-------------------+---------------
1 | 30 | 2 | 2
| 3 | 2 | 2
(2 rows)
UPDATE base_t SET v = v * 10;
SELECT * FROM mv ORDER BY i;
i | sum | __ivm_count_sum__ | __ivm_count__
---+-----+-------------------+---------------
1 | 300 | 2 | 2
| 30 | 2 | 2
(2 rows)
ROLLBACK;
BEGIN;
CREATE TABLE base_t (i int, v int);
INSERT INTO base_t VALUES (NULL, 1), (NULL, 2), (NULL, 3), (NULL, 4), (NULL, 5);
SELECT create_immv('mv', 'SELECT i, min(v), max(v) FROM base_t GROUP BY i');
NOTICE: created index "mv_index" on immv "mv"
create_immv
-------------
1
(1 row)
SELECT * FROM mv ORDER BY i;
i | min | max | __ivm_count_min__ | __ivm_count_max__ | __ivm_count__
---+-----+-----+-------------------+-------------------+---------------
| 1 | 5 | 5 | 5 | 5
(1 row)
DELETE FROM base_t WHERE v = 1;
SELECT * FROM mv ORDER BY i;
i | min | max | __ivm_count_min__ | __ivm_count_max__ | __ivm_count__
---+-----+-----+-------------------+-------------------+---------------
| 2 | 5 | 4 | 4 | 4
(1 row)
DELETE FROM base_t WHERE v = 3;
SELECT * FROM mv ORDER BY i;
i | min | max | __ivm_count_min__ | __ivm_count_max__ | __ivm_count__
---+-----+-----+-------------------+-------------------+---------------
| 2 | 5 | 3 | 3 | 3
(1 row)
DELETE FROM base_t WHERE v = 5;
SELECT * FROM mv ORDER BY i;
i | min | max | __ivm_count_min__ | __ivm_count_max__ | __ivm_count__
---+-----+-----+-------------------+-------------------+---------------
| 2 | 4 | 2 | 2 | 2
(1 row)
ROLLBACK;
-- IMMV containing user defined type
BEGIN;
CREATE TYPE mytype;
CREATE FUNCTION mytype_in(cstring)
RETURNS mytype AS 'int4in'
LANGUAGE INTERNAL STRICT IMMUTABLE;
NOTICE: return type mytype is only a shell
CREATE FUNCTION mytype_out(mytype)
RETURNS cstring AS 'int4out'
LANGUAGE INTERNAL STRICT IMMUTABLE;
NOTICE: argument type mytype is only a shell
CREATE TYPE mytype (
LIKE = int4,
INPUT = mytype_in,
OUTPUT = mytype_out
);
CREATE FUNCTION mytype_eq(mytype, mytype)
RETURNS bool AS 'int4eq'
LANGUAGE INTERNAL STRICT IMMUTABLE;
CREATE FUNCTION mytype_lt(mytype, mytype)
RETURNS bool AS 'int4lt'
LANGUAGE INTERNAL STRICT IMMUTABLE;
CREATE FUNCTION mytype_cmp(mytype, mytype)
RETURNS integer AS 'btint4cmp'
LANGUAGE INTERNAL STRICT IMMUTABLE;
CREATE OPERATOR = (
leftarg = mytype, rightarg = mytype,
procedure = mytype_eq);
CREATE OPERATOR < (
leftarg = mytype, rightarg = mytype,
procedure = mytype_lt);
CREATE OPERATOR CLASS mytype_ops
DEFAULT FOR TYPE mytype USING btree AS
OPERATOR 1 <,
OPERATOR 3 = ,
FUNCTION 1 mytype_cmp(mytype,mytype);
CREATE TABLE t_mytype (x mytype);
SELECT create_immv('mv_mytype',
'SELECT * FROM t_mytype');
NOTICE: could not create an index on immv "mv_mytype" automatically
DETAIL: This target list does not have all the primary key columns, or this view does not contain GROUP BY or DISTINCT clause.
HINT: Create an index on the immv for efficient incremental maintenance.
create_immv
-------------
0
(1 row)
INSERT INTO t_mytype VALUES ('1'::mytype);
SELECT * FROM mv_mytype;
x
---
1
(1 row)
ROLLBACK;
-- outer join is not supported
SELECT create_immv('mv(a,b)',
'SELECT a.i, b.i FROM mv_base_a a LEFT JOIN mv_base_b b ON a.i=b.i');
ERROR: OUTER JOIN is not supported on incrementally maintainable materialized view
-- CTE is not supported
SELECT create_immv('mv',
'WITH b AS ( SELECT * FROM mv_base_b) SELECT a.i,a.j FROM mv_base_a a, b WHERE a.i = b.i;');
ERROR: CTE is not supported on incrementally maintainable materialized view
-- contain system column
SELECT create_immv('mv_ivm01', 'SELECT i,j,xmin FROM mv_base_a');
ERROR: system column is not supported on incrementally maintainable materialized view
SELECT create_immv('mv_ivm02', 'SELECT i,j FROM mv_base_a WHERE xmin = ''610''');
ERROR: system column is not supported on incrementally maintainable materialized view
SELECT create_immv('mv_ivm03', 'SELECT i,j,xmin::text AS x_min FROM mv_base_a');
ERROR: system column is not supported on incrementally maintainable materialized view
SELECT create_immv('mv_ivm04', 'SELECT i,j,xidsend(xmin) AS x_min FROM mv_base_a');
ERROR: system column is not supported on incrementally maintainable materialized view
-- contain subquery
SELECT create_immv('mv_ivm03', 'SELECT i,j FROM mv_base_a WHERE i IN (SELECT i FROM mv_base_b WHERE k < 103 )');
ERROR: this query is not allowed on incrementally maintainable materialized view
HINT: Only simple subquery is supported
SELECT create_immv('mv_ivm04', 'SELECT a.i,a.j FROM mv_base_a a, (SELECT DISTINCT i FROM mv_base_b) b WHERE a.i = b.i');
ERROR: DISTINCT clause in nested query are not supported on incrementally maintainable materialized view
SELECT create_immv('mv_ivm05', 'SELECT i,j, (SELECT k FROM mv_base_b b WHERE a.i = b.i) FROM mv_base_a a');
ERROR: this query is not allowed on incrementally maintainable materialized view
HINT: subquery is not supported in targetlist
-- contain ORDER BY
SELECT create_immv('mv_ivm07', 'SELECT i,j,k FROM mv_base_a a INNER JOIN mv_base_b b USING(i) ORDER BY i,j,k');
ERROR: ORDER BY clause is not supported on incrementally maintainable materialized view
-- contain HAVING
SELECT create_immv('mv_ivm08', 'SELECT i,j,k FROM mv_base_a a INNER JOIN mv_base_b b USING(i) GROUP BY i,j,k HAVING SUM(i) > 5');
ERROR: HAVING clause is not supported on incrementally maintainable materialized view
-- contain GROUP BY without aggregate
SELECT create_immv('mv_ivm08', 'SELECT i,j FROM mv_base_a GROUP BY i,j');
ERROR: GROUP BY clause without aggregate is not supported on incrementally maintainable materialized view
-- contain view or materialized view
CREATE VIEW b_view AS SELECT i,k FROM mv_base_b;
CREATE MATERIALIZED VIEW b_mview AS SELECT i,k FROM mv_base_b;
SELECT create_immv('mv_ivm07', 'SELECT a.i,a.j FROM mv_base_a a,b_view b WHERE a.i = b.i');
ERROR: VIEW or MATERIALIZED VIEW is not supported on incrementally maintainable materialized view
SELECT create_immv('mv_ivm08', 'SELECT a.i,a.j FROM mv_base_a a,b_mview b WHERE a.i = b.i');
ERROR: VIEW or MATERIALIZED VIEW is not supported on incrementally maintainable materialized view
SELECT create_immv('mv_ivm09', 'SELECT a.i,a.j FROM mv_base_a a, (SELECT i, COUNT(*) FROM mv_base_b GROUP BY i) b WHERE a.i = b.i');
ERROR: aggregate functions in nested query are not supported on incrementally maintainable materialized view
-- contain mutable functions
SELECT create_immv('mv_ivm12', 'SELECT i,j FROM mv_base_a WHERE i = random()::int');
ERROR: mutable function is not supported on incrementally maintainable materialized view
HINT: functions must be marked IMMUTABLE
-- LIMIT/OFFSET is not supported
SELECT create_immv('mv_ivm13', 'SELECT i,j FROM mv_base_a LIMIT 10 OFFSET 5');
ERROR: LIMIT/OFFSET clause is not supported on incrementally maintainable materialized view
-- DISTINCT ON is not supported
SELECT create_immv('mv_ivm14', 'SELECT DISTINCT ON(i) i, j FROM mv_base_a');
ERROR: DISTINCT ON is not supported on incrementally maintainable materialized view
-- TABLESAMPLE clause is not supported
SELECT create_immv('mv_ivm15', 'SELECT i, j FROM mv_base_a TABLESAMPLE SYSTEM(50)');
ERROR: TABLESAMPLE clause is not supported on incrementally maintainable materialized view
-- window functions are not supported
SELECT create_immv('mv_ivm16', 'SELECT *, cume_dist() OVER (ORDER BY i) AS rank FROM mv_base_a');
ERROR: window functions are not supported on incrementally maintainable materialized view
-- inheritance parent is not supported
BEGIN;
CREATE TABLE parent (i int, v int);
CREATE TABLE child_a(options text) INHERITS(parent);
SELECT create_immv('mv_ivm21', 'SELECT * FROM parent');
ERROR: inheritance parent is not supported on incrementally maintainable materialized view
ROLLBACK;
-- UNION statement is not supported
SELECT create_immv('mv_ivm22', 'SELECT i,j FROM mv_base_a UNION ALL SELECT i,k FROM mv_base_b');
ERROR: UNION/INTERSECT/EXCEPT statements are not supported on incrementally maintainable materialized view
-- empty target list is not allowed with IVM
SELECT create_immv('mv_ivm25', 'SELECT FROM mv_base_a');
ERROR: empty target list is not supported on incrementally maintainable materialized view
-- FOR UPDATE/SHARE is not supported
SELECT create_immv('mv_ivm26', 'SELECT i,j FROM mv_base_a FOR UPDATE');
ERROR: FOR UPDATE/SHARE clause is not supported on incrementally maintainable materialized view
-- tartget list cannot contain ivm column that start with '__ivm'
SELECT create_immv('mv_ivm28', 'SELECT i AS "__ivm_count__" FROM mv_base_a');
ERROR: column name __ivm_count__ is not supported on incrementally maintainable materialized view
-- VALUES is not supported
SELECT create_immv('mv_ivm_only_values1', 'values(1)');
ERROR: VALUES is not supported on incrementally maintainable materialized view
-- base table which has row level security
DROP USER IF EXISTS ivm_admin;
NOTICE: role "ivm_admin" does not exist, skipping
DROP USER IF EXISTS ivm_user;
NOTICE: role "ivm_user" does not exist, skipping
CREATE USER ivm_admin;
CREATE USER ivm_user;
SET SESSION AUTHORIZATION ivm_admin;
CREATE TABLE rls_tbl(id int, data text, owner name);
INSERT INTO rls_tbl VALUES
(1,'foo','ivm_user'),
(2,'bar','postgres');
CREATE TABLE num_tbl(id int, num text);
INSERT INTO num_tbl VALUES
(1,'one'),
(2,'two'),
(3,'three'),
(4,'four');
CREATE POLICY rls_tbl_policy ON rls_tbl FOR SELECT TO PUBLIC USING(owner = current_user);
CREATE POLICY rls_tbl_policy2 ON rls_tbl FOR INSERT TO PUBLIC WITH CHECK(current_user LIKE 'ivm_%');
ALTER TABLE rls_tbl ENABLE ROW LEVEL SECURITY;
GRANT ALL on rls_tbl TO PUBLIC;
GRANT ALL on num_tbl TO PUBLIC;
SET SESSION AUTHORIZATION ivm_user;
SELECT create_immv('ivm_rls', 'SELECT * FROM rls_tbl');
NOTICE: could not create an index on immv "ivm_rls" automatically
DETAIL: This target list does not have all the primary key columns, or this view does not contain GROUP BY or DISTINCT clause.
HINT: Create an index on the immv for efficient incremental maintenance.
create_immv
-------------
1
(1 row)
SELECT id, data, owner FROM ivm_rls ORDER BY 1,2,3;
id | data | owner
----+------+----------
1 | foo | ivm_user
(1 row)
INSERT INTO rls_tbl VALUES
(3,'baz','ivm_user'),
(4,'qux','postgres');
SELECT id, data, owner FROM ivm_rls ORDER BY 1,2,3;
id | data | owner
----+------+----------
1 | foo | ivm_user
3 | baz | ivm_user
(2 rows)
SELECT create_immv('ivm_rls2', 'SELECT * FROM rls_tbl JOIN num_tbl USING(id)');
NOTICE: could not create an index on immv "ivm_rls2" automatically
DETAIL: This target list does not have all the primary key columns, or this view does not contain GROUP BY or DISTINCT clause.
HINT: Create an index on the immv for efficient incremental maintenance.
create_immv
-------------
2
(1 row)
RESET SESSION AUTHORIZATION;
WITH
x AS (UPDATE rls_tbl SET data = data || '_2' where id in (3,4)),
y AS (UPDATE num_tbl SET num = num || '_2' where id in (3,4))
SELECT;
--
(1 row)
SELECT * FROM ivm_rls2 ORDER BY 1,2,3;
id | data | owner | num
----+-------+----------+---------
1 | foo | ivm_user | one
3 | baz_2 | ivm_user | three_2
(2 rows)
DROP TABLE rls_tbl CASCADE;
NOTICE: drop cascades to 2 other objects
DETAIL: drop cascades to table ivm_rls
drop cascades to table ivm_rls2
DROP TABLE num_tbl CASCADE;
DROP USER ivm_user;
DROP USER ivm_admin;
-- prevent IMMV chanages
INSERT INTO mv_ivm_1 VALUES(1,1,1);
ERROR: cannot change materialized view "mv_ivm_1"
UPDATE mv_ivm_1 SET k = 1 WHERE i = 1;
ERROR: cannot change materialized view "mv_ivm_1"
DELETE FROM mv_ivm_1;
ERROR: cannot change materialized view "mv_ivm_1"
TRUNCATE mv_ivm_1;
ERROR: cannot change materialized view "mv_ivm_1"
DROP TABLE mv_base_b CASCADE;
NOTICE: drop cascades to 3 other objects
DETAIL: drop cascades to table mv_ivm_1
drop cascades to view b_view
drop cascades to materialized view b_mview
DROP TABLE mv_base_a CASCADE;
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