mirror of
https://github.com/tursodatabase/libsql.git
synced 2024-12-15 09:49:40 +00:00
126 lines
2.7 KiB
Plaintext
126 lines
2.7 KiB
Plaintext
|
|
CREATE TABLE t1(a,b,c);
|
|
INSERT INTO t1(a,b,c)
|
|
VALUES(1,2,3),(7,8,9),(4,5,6),(10,11,12),(4,8,12),(1,11,111);
|
|
CREATE INDEX t1a ON t1(a);
|
|
CREATE INDEX t1b ON t1(b);
|
|
ANALYZE;
|
|
DELETE FROM sqlite_stat1;
|
|
INSERT INTO sqlite_stat1(tbl,idx,stat)
|
|
VALUES('t1','t1a','12345 2'),('t1','t1b','12345 4');
|
|
ANALYZE sqlite_master;
|
|
SELECT *, '#' FROM t1 WHERE a BETWEEN 3 AND 8 ORDER BY c;
|
|
|
|
|
|
EXPLAIN QUERY PLAN
|
|
SELECT *, '#' FROM t1 WHERE a BETWEEN 3 AND 8 ORDER BY c;
|
|
|
|
|
|
SELECT c FROM t1 ORDER BY a;
|
|
|
|
|
|
EXPLAIN QUERY PLAN
|
|
SELECT c FROM t1 ORDER BY a;
|
|
|
|
|
|
EXPLAIN QUERY PLAN
|
|
SELECT c FROM t1 ORDER BY a;
|
|
|
|
|
|
UPDATE sqlite_stat1 SET stat='12345 2 unordered' WHERE idx='t1a';
|
|
ANALYZE sqlite_master;
|
|
SELECT *, '#' FROM t1 WHERE a BETWEEN 3 AND 8 ORDER BY c;
|
|
|
|
|
|
EXPLAIN QUERY PLAN
|
|
SELECT *, '#' FROM t1 WHERE a BETWEEN 3 AND 8 ORDER BY c;
|
|
|
|
|
|
SELECT c FROM t1 ORDER BY a;
|
|
|
|
|
|
EXPLAIN QUERY PLAN
|
|
SELECT c FROM t1 ORDER BY a;
|
|
|
|
|
|
EXPLAIN QUERY PLAN
|
|
SELECT c FROM t1 ORDER BY a;
|
|
|
|
|
|
UPDATE sqlite_stat1 SET stat='12345 2 whatever=5 unordered xyzzy=11'
|
|
WHERE idx='t1a';
|
|
ANALYZE sqlite_master;
|
|
SELECT *, '#' FROM t1 WHERE a BETWEEN 3 AND 8 ORDER BY c;
|
|
|
|
|
|
EXPLAIN QUERY PLAN
|
|
SELECT *, '#' FROM t1 WHERE a BETWEEN 3 AND 8 ORDER BY c;
|
|
|
|
|
|
SELECT c FROM t1 ORDER BY a;
|
|
|
|
|
|
EXPLAIN QUERY PLAN
|
|
SELECT c FROM t1 ORDER BY a;
|
|
|
|
|
|
EXPLAIN QUERY PLAN
|
|
SELECT c FROM t1 ORDER BY a;
|
|
|
|
|
|
DROP INDEX t1a;
|
|
CREATE INDEX t1ab ON t1(a,b);
|
|
CREATE INDEX t1ca ON t1(c,a);
|
|
DELETE FROM sqlite_stat1;
|
|
INSERT INTO sqlite_stat1(tbl,idx,stat)
|
|
VALUES('t1','t1ab','12345 3 2 sz=10'),('t1','t1ca','12345 3 2 sz=20');
|
|
ANALYZE sqlite_master;
|
|
SELECT count(a) FROM t1;
|
|
|
|
|
|
EXPLAIN QUERY PLAN
|
|
SELECT count(a) FROM t1;
|
|
|
|
|
|
DELETE FROM sqlite_stat1;
|
|
INSERT INTO sqlite_stat1(tbl,idx,stat)
|
|
VALUES('t1','t1ab','12345 3 2 sz=20'),('t1','t1ca','12345 3 2 sz=10');
|
|
ANALYZE sqlite_master;
|
|
SELECT count(a) FROM t1;
|
|
|
|
|
|
EXPLAIN QUERY PLAN
|
|
SELECT count(a) FROM t1;
|
|
|
|
|
|
DROP TABLE IF EXISTS t44;
|
|
CREATE TABLE t44(a PRIMARY KEY);
|
|
INSERT INTO sqlite_stat1 VALUES('t44',null,'sz=0');
|
|
ANALYZE sqlite_master;
|
|
SELECT 0 FROM t44 WHERE a IN(1,2,3);
|
|
|
|
|
|
DELETE FROM sqlite_stat1;
|
|
INSERT INTO sqlite_stat1(tbl,idx,stat)
|
|
VALUES('t1','t1ab','12345 3 2 x=5 sz=10 y=10'),
|
|
('t1','t1ca','12345 3 2 whatever sz=20 junk');
|
|
ANALYZE sqlite_master;
|
|
SELECT count(a) FROM t1;
|
|
|
|
|
|
EXPLAIN QUERY PLAN
|
|
SELECT count(a) FROM t1;
|
|
|
|
|
|
DELETE FROM sqlite_stat1;
|
|
INSERT INTO sqlite_stat1(tbl,idx,stat)
|
|
VALUES('t1','t1ca','12345 3 2 x=5 sz=10 y=10'),
|
|
('t1','t1ab','12345 3 2 whatever sz=20 junk');
|
|
ANALYZE sqlite_master;
|
|
SELECT count(a) FROM t1;
|
|
|
|
|
|
EXPLAIN QUERY PLAN
|
|
SELECT count(a) FROM t1;
|
|
|