mirror of
https://github.com/tursodatabase/libsql.git
synced 2024-12-15 09:49:40 +00:00
333 lines
8.6 KiB
Plaintext
333 lines
8.6 KiB
Plaintext
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CREATE TABLE t1(a TEXT, b INT, c INT, d INT);
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CREATE INDEX t1abc ON t1(a,b,c);
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INSERT INTO t1 VALUES('abc',123,4,5);
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INSERT INTO t1 VALUES('abc',234,5,6);
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INSERT INTO t1 VALUES('abc',234,6,7);
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INSERT INTO t1 VALUES('abc',345,7,8);
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INSERT INTO t1 VALUES('def',567,8,9);
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INSERT INTO t1 VALUES('def',345,9,10);
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INSERT INTO t1 VALUES('bcd',100,6,11);
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/* Fake the sqlite_stat1 table so that the query planner believes
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** the table contains thousands of rows and that the first few
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** columns are not selective. */
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ANALYZE;
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DELETE FROM sqlite_stat1;
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INSERT INTO sqlite_stat1 VALUES('t1','t1abc','10000 5000 2000 10');
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ANALYZE sqlite_master;
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SELECT a,b,c,d,'|' FROM t1 WHERE b=345 ORDER BY a;
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EXPLAIN QUERY PLAN
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SELECT a,b,c,d,'|' FROM t1 WHERE d<>99 AND b=345 ORDER BY a;
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EXPLAIN QUERY PLAN
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SELECT a,b,c,d,'|' FROM t1 WHERE d<>99 AND b=345 ORDER BY a;
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SELECT a,b,c,d,'|' FROM t1 WHERE d<>99 AND b=345 ORDER BY a DESC;
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EXPLAIN QUERY PLAN
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SELECT a,b,c,d,'|' FROM t1 WHERE d<>99 AND b=345 ORDER BY a DESC;
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EXPLAIN QUERY PLAN
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SELECT a,b,c,d,'|' FROM t1 WHERE d<>99 AND b=345 ORDER BY a DESC;
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SELECT a,b,c,d,'|' FROM t1 WHERE c=6 ORDER BY a, b, c;
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EXPLAIN QUERY PLAN
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SELECT a,b,c,d,'|' FROM t1 WHERE c=6 ORDER BY a, b, c;
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EXPLAIN QUERY PLAN
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SELECT a,b,c,d,'|' FROM t1 WHERE c=6 ORDER BY a, b, c;
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SELECT a,b,c,d,'|' FROM t1 WHERE c IN (6,7) ORDER BY a, b, c;
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EXPLAIN QUERY PLAN
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SELECT a,b,c,d,'|' FROM t1 WHERE c IN (6,7) ORDER BY a, b, c;
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EXPLAIN QUERY PLAN
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SELECT a,b,c,d,'|' FROM t1 WHERE c IN (6,7) ORDER BY a, b, c;
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SELECT a,b,c,d,'|' FROM t1 WHERE c BETWEEN 6 AND 7 ORDER BY a, b, c;
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EXPLAIN QUERY PLAN
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SELECT a,b,c,d,'|' FROM t1 WHERE c BETWEEN 6 AND 7 ORDER BY a, b, c;
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EXPLAIN QUERY PLAN
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SELECT a,b,c,d,'|' FROM t1 WHERE c BETWEEN 6 AND 7 ORDER BY a, b, c;
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SELECT a,b,c,d,'|' FROM t1 WHERE b IN (234, 345) AND c BETWEEN 6 AND 7
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ORDER BY a, b;
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EXPLAIN QUERY PLAN
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SELECT a,b,c,d,'|' FROM t1 WHERE b IN (234, 345) AND c BETWEEN 6 AND 7
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ORDER BY a, b;
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EXPLAIN QUERY PLAN
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SELECT a,b,c,d,'|' FROM t1 WHERE b IN (234, 345) AND c BETWEEN 6 AND 7
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ORDER BY a, b;
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CREATE TABLE t1j(x TEXT, y INTEGER);
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INSERT INTO t1j VALUES('one',1),('six',6),('ninty-nine',99);
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INSERT INTO sqlite_stat1 VALUES('t1j',null,'3');
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ANALYZE sqlite_master;
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SELECT x, a, b, c, d, '|' FROM t1j, t1 WHERE c=y ORDER BY +a;
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EXPLAIN QUERY PLAN
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SELECT x, a, b, c, d, '|' FROM t1j, t1 WHERE c=y ORDER BY +a;
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SELECT x, a, b, c, d, '|' FROM t1j LEFT JOIN t1 ON c=y ORDER BY +y, +a;
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EXPLAIN QUERY PLAN
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SELECT x, a, b, c, d, '|' FROM t1j LEFT JOIN t1 ON c=y ORDER BY +y, +a;
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CREATE TABLE t2(a TEXT, b INT, c INT, d INT,
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PRIMARY KEY(a,b,c));
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INSERT INTO t2 SELECT * FROM t1;
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/* Fake the sqlite_stat1 table so that the query planner believes
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** the table contains thousands of rows and that the first few
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** columns are not selective. */
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ANALYZE;
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UPDATE sqlite_stat1 SET stat='10000 5000 2000 10' WHERE idx NOT NULL;
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ANALYZE sqlite_master;
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SELECT a,b,c,d,'|' FROM t2 WHERE d<>99 AND b=345 ORDER BY a;
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EXPLAIN QUERY PLAN
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SELECT a,b,c,d,'|' FROM t2 WHERE d<>99 AND b=345 ORDER BY a;
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EXPLAIN QUERY PLAN
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SELECT a,b,c,d,'|' FROM t2 WHERE d<>99 AND b=345 ORDER BY a;
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CREATE TABLE t3(a TEXT, b INT, c INT, d INT,
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PRIMARY KEY(a,b,c)) WITHOUT ROWID;
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INSERT INTO t3 SELECT * FROM t1;
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/* Fake the sqlite_stat1 table so that the query planner believes
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** the table contains thousands of rows and that the first few
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** columns are not selective. */
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ANALYZE;
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UPDATE sqlite_stat1 SET stat='10000 5000 2000 10' WHERE idx NOT NULL;
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ANALYZE sqlite_master;
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SELECT a,b,c,d,'|' FROM t3 WHERE b=345 ORDER BY a;
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EXPLAIN QUERY PLAN
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SELECT a,b,c,d,'|' FROM t3 WHERE b=345 ORDER BY a;
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EXPLAIN QUERY PLAN
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SELECT a,b,c,d,'|' FROM t3 WHERE b=345 ORDER BY a;
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CREATE TABLE t4(a,b,c,d,e,f,g,h,i);
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CREATE INDEX t4all ON t4(a,b,c,d,e,f,g,h);
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INSERT INTO t4 VALUES(1,2,3,4,5,6,7,8,9);
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ANALYZE;
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DELETE FROM sqlite_stat1;
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INSERT INTO sqlite_stat1
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VALUES('t4','t4all','655360 163840 40960 10240 2560 640 160 40 10');
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ANALYZE sqlite_master;
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SELECT i FROM t4 WHERE a=1;
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SELECT i FROM t4 WHERE b=2;
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SELECT i FROM t4 WHERE c=3;
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SELECT i FROM t4 WHERE d=4;
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SELECT i FROM t4 WHERE e=5;
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SELECT i FROM t4 WHERE f=6;
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SELECT i FROM t4 WHERE g=7;
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SELECT i FROM t4 WHERE h=8;
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CREATE TABLE t5(
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id INTEGER PRIMARY KEY,
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loc TEXT,
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lang INTEGER,
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utype INTEGER,
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xa INTEGER,
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xd INTEGER,
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xh INTEGER
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);
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CREATE INDEX t5i1 on t5(loc, xh, xa, utype, lang);
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CREATE INDEX t5i2 ON t5(xd,loc,utype,lang);
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EXPLAIN QUERY PLAN
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SELECT xh, loc FROM t5 WHERE loc >= 'M' AND loc < 'N';
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ANALYZE;
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DELETE FROM sqlite_stat1;
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DROP TABLE IF EXISTS sqlite_stat4;
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INSERT INTO sqlite_stat1 VALUES('t5','t5i1','2702931 3 2 2 2 2');
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INSERT INTO sqlite_stat1 VALUES('t5','t5i2','2702931 686 2 2 2');
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ANALYZE sqlite_master;
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EXPLAIN QUERY PLAN
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SELECT xh, loc FROM t5 WHERE loc >= 'M' AND loc < 'N';
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CREATE TABLE t1(a,b,c,d,e,f,g,h varchar(300));
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CREATE INDEX t1ab ON t1(a,b);
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ANALYZE sqlite_master;
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-- Only two distinct values for the skip-scan column. Skip-scan is not used.
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INSERT INTO sqlite_stat1 VALUES('t1','t1ab','500000 250000 125000');
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ANALYZE sqlite_master;
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EXPLAIN QUERY PLAN SELECT * FROM t1 WHERE b=1;
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-- Four distinct values for the skip-scan column. Skip-scan is used.
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UPDATE sqlite_stat1 SET stat='500000 250000 62500';
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ANALYZE sqlite_master;
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EXPLAIN QUERY PLAN SELECT * FROM t1 WHERE b=1;
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-- Two distinct values for the skip-scan column again. Skip-scan is not used.
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UPDATE sqlite_stat1 SET stat='500000 125000 62500';
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ANALYZE sqlite_master;
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EXPLAIN QUERY PLAN SELECT * FROM t1 WHERE b=1;
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UPDATE sqlite_stat1 SET stat='500000 125000 1 sz=100';
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ANALYZE sqlite_master;
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EXPLAIN QUERY PLAN SELECT * FROM t1 WHERE b=1;
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UPDATE sqlite_stat1 SET stat='500000 125000 1 noskipscan sz=100';
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ANALYZE sqlite_master;
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EXPLAIN QUERY PLAN SELECT * FROM t1 WHERE b=1;
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UPDATE sqlite_stat1 SET stat='500000 125000 1 sz=100 noskipscan';
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ANALYZE sqlite_master;
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EXPLAIN QUERY PLAN SELECT * FROM t1 WHERE b=1;
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DROP TABLE IF EXISTS t1;
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CREATE TABLE t1(x, y, PRIMARY KEY(x,y)) WITHOUT ROWID;
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INSERT INTO t1(x,y) VALUES(1,'AB');
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INSERT INTO t1(x,y) VALUES(2,'CD');
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ANALYZE;
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DROP TABLE IF EXISTS sqlite_stat4;
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DELETE FROM sqlite_stat1;
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INSERT INTO sqlite_stat1(tbl,idx,stat) VALUES('t1','t1','1000000 100 1');
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ANALYZE sqlite_master;
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SELECT * FROM t1
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WHERE (y = 'AB' AND x <= 4)
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OR (y = 'EF' AND x = 5);
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EXPLAIN QUERY PLAN
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SELECT * FROM t1
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WHERE (y = 'AB' AND x <= 4)
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OR (y = 'EF' AND x = 5);
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SELECT * FROM t1
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WHERE y = 'AB' OR (y = 'CD' AND x = 2)
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ORDER BY +x;
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CREATE TABLE t9a(a,b,c);
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CREATE INDEX t9a_ab ON t9a(a,b);
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CREATE TABLE t9b(x,y);
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ANALYZE sqlite_master;
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INSERT INTO sqlite_stat1 VALUES('t9a','t9a_ab','1000000 250000 1');
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ANALYZE sqlite_master;
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EXPLAIN QUERY PLAN
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SELECT * FROM t9a WHERE b IN (SELECT x FROM t9b WHERE y!=5);
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EXPLAIN QUERY PLAN
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SELECT * FROM t9a WHERE b IN (SELECT x FROM t9b WHERE y!=5);
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CREATE TABLE t6(a TEXT, b INT, c INT, d INT);
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CREATE INDEX t6abc ON t6(a,b,c);
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INSERT INTO t6 VALUES('abc',123,4,5);
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ANALYZE;
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DELETE FROM sqlite_stat1;
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INSERT INTO sqlite_stat1 VALUES('t6','t6abc','10000 5000 2000 10');
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ANALYZE sqlite_master;
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DELETE FROM t6;
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EXPLAIN QUERY PLAN
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SELECT a,b,c,d,'|' FROM t6 WHERE d<>99 AND b=345 ORDER BY a;
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SELECT a,b,c,d,'|' FROM t6 WHERE d<>99 AND b=345 ORDER BY a;
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EXPLAIN QUERY PLAN
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SELECT a,b,c,d,'|' FROM t6 WHERE d<>99 AND b=345 ORDER BY a DESC;
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SELECT a,b,c,d,'|' FROM t6 WHERE d<>99 AND b=345 ORDER BY a DESC;
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CREATE TABLE t1 (c1, c2, c3, c4, PRIMARY KEY(c4, c3));
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INSERT INTO t1 VALUES(3,0,1,NULL);
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INSERT INTO t1 VALUES(0,4,1,NULL);
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INSERT INTO t1 VALUES(5,6,1,NULL);
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INSERT INTO t1 VALUES(0,4,1,NULL);
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ANALYZE sqlite_master;
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INSERT INTO sqlite_stat1 VALUES('t1','sqlite_autoindex_t1_1','18 18 6');
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ANALYZE sqlite_master;
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SELECT DISTINCT quote(c1), quote(c2), quote(c3), quote(c4), '|'
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FROM t1 WHERE t1.c3 = 1;
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CREATE TABLE t1(a,b INT);
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INSERT INTO t1(a,b) VALUES(1,2),(3,3),(4,5);
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CREATE UNIQUE INDEX i1 ON t1(b,b,a,a,a,a,a,b,a);
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ANALYZE;
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DROP TABLE IF EXISTS sqlite_stat4;
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INSERT INTO sqlite_stat1 VALUES('t1','i1','30 30 30 2 2 2 2 2 2 2');
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ANALYZE sqlite_master;
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SELECT DISTINCT a
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FROM t1
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WHERE a = b
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AND a = 3
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AND b IN (1,3,2,4)
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AND b >= 0
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AND a <= 10;
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CREATE TABLE t1(a TEXT, UNIQUE(a,a,a));
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INSERT INTO t1 VALUES (hex(zeroblob(241))),(1),(2),(3);
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ANALYZE;
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SELECT max(a) FROM t1 WHERE a IN t1;
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