mirror of
https://github.com/tursodatabase/libsql.git
synced 2024-12-12 15:33:44 +00:00
126 lines
2.7 KiB
Plaintext
126 lines
2.7 KiB
Plaintext
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CREATE TABLE t1(a,b,c);
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INSERT INTO t1(a,b,c)
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VALUES(1,2,3),(7,8,9),(4,5,6),(10,11,12),(4,8,12),(1,11,111);
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CREATE INDEX t1a ON t1(a);
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CREATE INDEX t1b ON t1(b);
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ANALYZE;
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DELETE FROM sqlite_stat1;
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INSERT INTO sqlite_stat1(tbl,idx,stat)
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VALUES('t1','t1a','12345 2'),('t1','t1b','12345 4');
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ANALYZE sqlite_master;
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SELECT *, '#' FROM t1 WHERE a BETWEEN 3 AND 8 ORDER BY c;
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EXPLAIN QUERY PLAN
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SELECT *, '#' FROM t1 WHERE a BETWEEN 3 AND 8 ORDER BY c;
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SELECT c FROM t1 ORDER BY a;
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EXPLAIN QUERY PLAN
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SELECT c FROM t1 ORDER BY a;
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EXPLAIN QUERY PLAN
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SELECT c FROM t1 ORDER BY a;
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UPDATE sqlite_stat1 SET stat='12345 2 unordered' WHERE idx='t1a';
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ANALYZE sqlite_master;
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SELECT *, '#' FROM t1 WHERE a BETWEEN 3 AND 8 ORDER BY c;
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EXPLAIN QUERY PLAN
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SELECT *, '#' FROM t1 WHERE a BETWEEN 3 AND 8 ORDER BY c;
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SELECT c FROM t1 ORDER BY a;
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EXPLAIN QUERY PLAN
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SELECT c FROM t1 ORDER BY a;
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EXPLAIN QUERY PLAN
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SELECT c FROM t1 ORDER BY a;
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UPDATE sqlite_stat1 SET stat='12345 2 whatever=5 unordered xyzzy=11'
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WHERE idx='t1a';
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ANALYZE sqlite_master;
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SELECT *, '#' FROM t1 WHERE a BETWEEN 3 AND 8 ORDER BY c;
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EXPLAIN QUERY PLAN
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SELECT *, '#' FROM t1 WHERE a BETWEEN 3 AND 8 ORDER BY c;
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SELECT c FROM t1 ORDER BY a;
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EXPLAIN QUERY PLAN
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SELECT c FROM t1 ORDER BY a;
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EXPLAIN QUERY PLAN
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SELECT c FROM t1 ORDER BY a;
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DROP INDEX t1a;
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CREATE INDEX t1ab ON t1(a,b);
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CREATE INDEX t1ca ON t1(c,a);
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DELETE FROM sqlite_stat1;
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INSERT INTO sqlite_stat1(tbl,idx,stat)
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VALUES('t1','t1ab','12345 3 2 sz=10'),('t1','t1ca','12345 3 2 sz=20');
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ANALYZE sqlite_master;
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SELECT count(a) FROM t1;
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EXPLAIN QUERY PLAN
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SELECT count(a) FROM t1;
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DELETE FROM sqlite_stat1;
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INSERT INTO sqlite_stat1(tbl,idx,stat)
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VALUES('t1','t1ab','12345 3 2 sz=20'),('t1','t1ca','12345 3 2 sz=10');
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ANALYZE sqlite_master;
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SELECT count(a) FROM t1;
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EXPLAIN QUERY PLAN
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SELECT count(a) FROM t1;
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DROP TABLE IF EXISTS t44;
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CREATE TABLE t44(a PRIMARY KEY);
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INSERT INTO sqlite_stat1 VALUES('t44',null,'sz=0');
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ANALYZE sqlite_master;
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SELECT 0 FROM t44 WHERE a IN(1,2,3);
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DELETE FROM sqlite_stat1;
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INSERT INTO sqlite_stat1(tbl,idx,stat)
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VALUES('t1','t1ab','12345 3 2 x=5 sz=10 y=10'),
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('t1','t1ca','12345 3 2 whatever sz=20 junk');
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ANALYZE sqlite_master;
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SELECT count(a) FROM t1;
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EXPLAIN QUERY PLAN
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SELECT count(a) FROM t1;
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DELETE FROM sqlite_stat1;
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INSERT INTO sqlite_stat1(tbl,idx,stat)
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VALUES('t1','t1ca','12345 3 2 x=5 sz=10 y=10'),
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('t1','t1ab','12345 3 2 whatever sz=20 junk');
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ANALYZE sqlite_master;
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SELECT count(a) FROM t1;
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EXPLAIN QUERY PLAN
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SELECT count(a) FROM t1;
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