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Fix: Drop internal DBSP table when dropping materialized view

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This commit is contained in:
Martin Mauch
2025-11-08 19:50:48 +01:00
committed by Martin Mauch
parent 2c49c47300
commit 4d1fdd951b
3 changed files with 238 additions and 20 deletions
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91
testing/materialized_views.test
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@@ -74,10 +74,10 @@ do_execsql_test_on_specific_db {:memory:} matview-filter-with-groupby {
CREATE TABLE t(a INTEGER, b INTEGER);
INSERT INTO t(a,b) VALUES (2,2), (3,3), (6,6), (7,7);
CREATE MATERIALIZED VIEW v AS
SELECT b as yourb, SUM(a) as mysum, COUNT(a) as mycount
FROM t
WHERE b > 2
CREATE MATERIALIZED VIEW v AS
SELECT b as yourb, SUM(a) as mysum, COUNT(a) as mycount
FROM t
WHERE b > 2
GROUP BY b;
SELECT * FROM v ORDER BY yourb;
@@ -87,10 +87,10 @@ do_execsql_test_on_specific_db {:memory:} matview-filter-with-groupby {
do_execsql_test_on_specific_db {:memory:} matview-insert-maintenance {
CREATE TABLE t(a INTEGER, b INTEGER);
CREATE MATERIALIZED VIEW v AS
SELECT b, SUM(a) as total, COUNT(*) as cnt
FROM t
WHERE b > 2
CREATE MATERIALIZED VIEW v AS
SELECT b, SUM(a) as total, COUNT(*) as cnt
FROM t
WHERE b > 2
GROUP BY b;
INSERT INTO t VALUES (3,3), (6,6);
@@ -110,7 +110,7 @@ do_execsql_test_on_specific_db {:memory:} matview-insert-maintenance {
do_execsql_test_on_specific_db {:memory:} matview-delete-maintenance {
CREATE TABLE items(id INTEGER, category TEXT, amount INTEGER);
INSERT INTO items VALUES
INSERT INTO items VALUES
(1, 'A', 10),
(2, 'B', 20),
(3, 'A', 30),
@@ -166,7 +166,7 @@ do_execsql_test_on_specific_db {:memory:} matview-integer-primary-key-basic {
CREATE TABLE t(a INTEGER PRIMARY KEY, b INTEGER);
INSERT INTO t(a,b) VALUES (2,2), (3,3), (6,6), (7,7);
CREATE MATERIALIZED VIEW v AS
CREATE MATERIALIZED VIEW v AS
SELECT * FROM t WHERE b > 2;
SELECT * FROM v ORDER BY a;
@@ -178,7 +178,7 @@ do_execsql_test_on_specific_db {:memory:} matview-integer-primary-key-update-row
CREATE TABLE t(a INTEGER PRIMARY KEY, b INTEGER);
INSERT INTO t(a,b) VALUES (2,2), (3,3), (6,6), (7,7);
CREATE MATERIALIZED VIEW v AS
CREATE MATERIALIZED VIEW v AS
SELECT * FROM t WHERE b > 2;
SELECT * FROM v ORDER BY a;
@@ -202,7 +202,7 @@ do_execsql_test_on_specific_db {:memory:} matview-integer-primary-key-update-val
CREATE TABLE t(a INTEGER PRIMARY KEY, b INTEGER);
INSERT INTO t(a,b) VALUES (2,2), (3,3), (6,6), (7,7);
CREATE MATERIALIZED VIEW v AS
CREATE MATERIALIZED VIEW v AS
SELECT * FROM t WHERE b > 2;
SELECT * FROM v ORDER BY a;
@@ -223,7 +223,7 @@ do_execsql_test_on_specific_db {:memory:} matview-integer-primary-key-update-val
do_execsql_test_on_specific_db {:memory:} matview-integer-primary-key-with-aggregation {
CREATE TABLE t(a INTEGER PRIMARY KEY, b INTEGER, c INTEGER);
INSERT INTO t VALUES
INSERT INTO t VALUES
(1, 10, 100),
(2, 10, 200),
(3, 20, 300),
@@ -2494,3 +2494,68 @@ do_execsql_test_on_specific_db {:memory:} matview-count-distinct-global-aggregat
3
5
4}
# Test that dropping a materialized view cleans up the DBSP state table
do_execsql_test_on_specific_db {:memory:} matview-drop-cleans-up-dbsp-table {
CREATE TABLE t(id INTEGER PRIMARY KEY, val INTEGER);
INSERT INTO t VALUES (1, 10), (2, 20), (3, 30);
CREATE MATERIALIZED VIEW v AS
SELECT val, COUNT(*) as cnt
FROM t
GROUP BY val;
-- Verify the view exists
SELECT COUNT(*) FROM sqlite_schema WHERE type='view' AND name='v';
-- Verify the DBSP state table exists (name pattern: __turso_internal_dbsp_state_v*_v)
SELECT COUNT(*) FROM sqlite_schema WHERE type='table' AND name LIKE '__turso_internal_dbsp_state_v%_v';
-- Verify the DBSP state index exists
SELECT COUNT(*) FROM sqlite_schema WHERE type='index' AND name LIKE 'sqlite_autoindex___turso_internal_dbsp_state_v%_v_1';
-- Drop the materialized view
DROP VIEW v;
-- Verify the view is gone
SELECT COUNT(*) FROM sqlite_schema WHERE type='view' AND name='v';
-- Verify the DBSP state table is gone
SELECT COUNT(*) FROM sqlite_schema WHERE type='table' AND name LIKE '__turso_internal_dbsp_state_v%_v';
-- Verify the DBSP state index is gone
SELECT COUNT(*) FROM sqlite_schema WHERE type='index' AND name LIKE 'sqlite_autoindex___turso_internal_dbsp_state_v%_v_1';
} {1
1
1
0
0
0}
# Test that a materialized view can be recreated after dropping
do_execsql_test_on_specific_db {:memory:} matview-recreate-after-drop {
CREATE TABLE data(x INTEGER, y INTEGER);
INSERT INTO data VALUES (1, 10), (2, 20), (3, 30);
CREATE MATERIALIZED VIEW mv AS
SELECT x, SUM(y) as total
FROM data
GROUP BY x;
SELECT * FROM mv ORDER BY x;
-- Drop the view
DROP VIEW mv;
-- Verify it can be recreated with a different definition
CREATE MATERIALIZED VIEW mv AS
SELECT x + 1 as modified_x, y * 2 as doubled_y
FROM data
WHERE x > 1;
SELECT * FROM mv ORDER BY modified_x;
} {1|10.0
2|20.0
3|30.0
3|40
4|60}