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Add some tests for CTE and remove unnecessary one

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This commit is contained in:
Yugo Nagata 2023-01-23 18:29:23 +09:00
parent 9972f279c4
commit 61eca8c30c
2 changed files with 62 additions and 34 deletions
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78
expected/pg_ivm.out
View file

@ -840,6 +840,31 @@ SELECT * FROM mv_cte ORDER BY i,j;
4 | 40
(6 rows)
ROLLBACK;
BEGIN;
SELECT create_immv('mv_cte',
'WITH b AS ( SELECT * FROM (SELECT * FROM mv_base_b) b2) SELECT v.i,v.j FROM (WITH a AS (SELECT * FROM mv_base_a) SELECT a.i,a.j FROM a, b WHERE a.i = b.i) v');
NOTICE: could not create an index on immv "mv_cte" 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)
INSERT INTO mv_base_a VALUES(2,20);
INSERT INTO mv_base_b VALUES(3,300);
SELECT * FROM mv_cte ORDER BY i,j;
i | j
---+----
1 | 10
2 | 20
2 | 20
3 | 30
3 | 30
4 | 40
(6 rows)
ROLLBACK;
BEGIN;
SELECT create_immv('mv_cte',
@ -873,7 +898,12 @@ SELECT * FROM mv_cte ORDER BY i,j,k;
3 | 30 | 133
(8 rows)
ROLLBACK;
END; -- don't remove for get_immv_def test
--- disallow not-simple CTE
SELECT create_immv('mv_cte_fail', 'WITH b AS (SELECT i, COUNT(*) FROM mv_base_b GROUP BY i) SELECT a.i,a.j FROM mv_base_a a, b WHERE a.i = b.i');
ERROR: aggregate functions in nested query are not supported on incrementally maintainable materialized view
SELECT create_immv('mv_cte_fail', 'WITH b AS (SELECT DISTINCT i FROM mv_base_b) SELECT a.i,a.j FROM mv_base_a a, b WHERE a.i = b.i');
ERROR: DISTINCT clause in nested query are not supported on incrementally maintainable materialized view
-- views including NULL
BEGIN;
CREATE TABLE base_t (i int, v int);
@ -1051,17 +1081,6 @@ ROLLBACK;
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;');
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
-------------
4
(1 row)
-- 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
@ -1296,23 +1315,24 @@ TRUNCATE mv_ivm_1;
ERROR: cannot change materialized view "mv_ivm_1"
-- get_immv_def function
SELECT immvrelid, get_immv_def(immvrelid) FROM pg_ivm_immv ORDER BY 1;
immvrelid | get_immv_def
-----------+----------------------------------
mv_ivm_1 | SELECT a.i, +
| a.j, +
| b.k +
| FROM (mv_base_a a +
immvrelid | get_immv_def
-----------+------------------------------------------
mv_ivm_1 | SELECT a.i, +
| a.j, +
| b.k +
| FROM (mv_base_a a +
| JOIN mv_base_b b USING (i))
mv | WITH b AS ( +
| SELECT mv_base_b.i, +
| mv_base_b.k +
| FROM mv_base_b +
| ) +
| SELECT a.i, +
| a.j +
| FROM mv_base_a a, +
| b +
| WHERE (a.i = b.i)
mv_cte | WITH x AS ( +
| SELECT b.i, +
| a.j, +
| b.k +
| FROM (mv_base_b b +
| JOIN mv_base_a a USING (i))+
| ) +
| SELECT i, +
| j, +
| k +
| FROM x
(2 rows)
-- mv_base_b is not immv
@ -1325,7 +1345,7 @@ SELECT 'mv_base_b'::regclass, get_immv_def('mv_base_b');
DROP TABLE mv_base_b CASCADE;
NOTICE: drop cascades to 4 other objects
DETAIL: drop cascades to table mv_ivm_1
drop cascades to table mv
drop cascades to table mv_cte
drop cascades to view b_view
drop cascades to materialized view b_mview
DROP TABLE mv_base_a CASCADE;

18
sql/pg_ivm.sql
View file

@ -290,6 +290,14 @@ INSERT INTO mv_base_b VALUES(3,300);
SELECT * FROM mv_cte ORDER BY i,j;
ROLLBACK;
BEGIN;
SELECT create_immv('mv_cte',
'WITH b AS ( SELECT * FROM (SELECT * FROM mv_base_b) b2) SELECT v.i,v.j FROM (WITH a AS (SELECT * FROM mv_base_a) SELECT a.i,a.j FROM a, b WHERE a.i = b.i) v');
INSERT INTO mv_base_a VALUES(2,20);
INSERT INTO mv_base_b VALUES(3,300);
SELECT * FROM mv_cte ORDER BY i,j;
ROLLBACK;
BEGIN;
SELECT create_immv('mv_cte',
'WITH x AS ( SELECT i, a.j, b.k FROM mv_base_b b INNER JOIN mv_base_a a USING(i)) SELECT * FROM x');
@ -299,7 +307,11 @@ WITH
bd AS (DELETE FROM mv_base_b WHERE i = 4 RETURNING 0)
SELECT;
SELECT * FROM mv_cte ORDER BY i,j,k;
ROLLBACK;
END; -- don't remove for get_immv_def test
--- disallow not-simple CTE
SELECT create_immv('mv_cte_fail', 'WITH b AS (SELECT i, COUNT(*) FROM mv_base_b GROUP BY i) SELECT a.i,a.j FROM mv_base_a a, b WHERE a.i = b.i');
SELECT create_immv('mv_cte_fail', 'WITH b AS (SELECT DISTINCT i FROM mv_base_b) SELECT a.i,a.j FROM mv_base_a a, b WHERE a.i = b.i');
-- views including NULL
BEGIN;
@ -392,10 +404,6 @@ ROLLBACK;
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');
-- 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;');
-- contain system column
SELECT create_immv('mv_ivm01', 'SELECT i,j,xmin FROM mv_base_a');
SELECT create_immv('mv_ivm02', 'SELECT i,j FROM mv_base_a WHERE xmin = ''610''');