mirror of
https://github.com/sqlite/sqlite.git
synced 2024-11-25 08:59:33 +01:00
235b5d0ac5
in helping to satisfy the ORDER BY or GROUP BY in the order query without doing an extra sort, then omit the extra sort. FossilOrigin-Name: 2fbb4dc2327ee435cb2b7a4adcddf5a9cee6dff7de96e2ecb761166427b5ddea
433 lines
14 KiB
Plaintext
433 lines
14 KiB
Plaintext
# 2013-11-13
|
|
#
|
|
# The author disclaims copyright to this source code. In place of
|
|
# a legal notice, here is a blessing:
|
|
#
|
|
# May you do good and not evil.
|
|
# May you find forgiveness for yourself and forgive others.
|
|
# May you share freely, never taking more than you give.
|
|
#
|
|
#***********************************************************************
|
|
#
|
|
# This file implements tests of the "skip-scan" query strategy.
|
|
#
|
|
|
|
set testdir [file dirname $argv0]
|
|
source $testdir/tester.tcl
|
|
|
|
do_execsql_test skipscan1-1.1 {
|
|
CREATE TABLE t1(a TEXT, b INT, c INT, d INT);
|
|
CREATE INDEX t1abc ON t1(a,b,c);
|
|
INSERT INTO t1 VALUES('abc',123,4,5);
|
|
INSERT INTO t1 VALUES('abc',234,5,6);
|
|
INSERT INTO t1 VALUES('abc',234,6,7);
|
|
INSERT INTO t1 VALUES('abc',345,7,8);
|
|
INSERT INTO t1 VALUES('def',567,8,9);
|
|
INSERT INTO t1 VALUES('def',345,9,10);
|
|
INSERT INTO t1 VALUES('bcd',100,6,11);
|
|
|
|
/* Fake the sqlite_stat1 table so that the query planner believes
|
|
** the table contains thousands of rows and that the first few
|
|
** columns are not selective. */
|
|
ANALYZE;
|
|
DELETE FROM sqlite_stat1;
|
|
INSERT INTO sqlite_stat1 VALUES('t1','t1abc','10000 5000 2000 10');
|
|
ANALYZE sqlite_master;
|
|
} {}
|
|
|
|
# Simple queries that leave the first one or two columns of the
|
|
# index unconstrainted.
|
|
#
|
|
do_execsql_test skipscan1-1.2 {
|
|
SELECT a,b,c,d,'|' FROM t1 WHERE b=345 ORDER BY a;
|
|
} {abc 345 7 8 | def 345 9 10 |}
|
|
do_execsql_test skipscan1-1.2eqp {
|
|
EXPLAIN QUERY PLAN
|
|
SELECT a,b,c,d,'|' FROM t1 WHERE d<>99 AND b=345 ORDER BY a;
|
|
} {/* USING INDEX t1abc (ANY(a) AND b=?)*/}
|
|
do_execsql_test skipscan1-1.2sort {
|
|
EXPLAIN QUERY PLAN
|
|
SELECT a,b,c,d,'|' FROM t1 WHERE d<>99 AND b=345 ORDER BY a;
|
|
} {~/*ORDER BY*/}
|
|
|
|
do_execsql_test skipscan1-1.3 {
|
|
SELECT a,b,c,d,'|' FROM t1 WHERE d<>99 AND b=345 ORDER BY a DESC;
|
|
} {def 345 9 10 | abc 345 7 8 |}
|
|
do_execsql_test skipscan1-1.3eqp {
|
|
EXPLAIN QUERY PLAN
|
|
SELECT a,b,c,d,'|' FROM t1 WHERE d<>99 AND b=345 ORDER BY a DESC;
|
|
} {/* USING INDEX t1abc (ANY(a) AND b=?)*/}
|
|
do_execsql_test skipscan1-1.3sort {
|
|
EXPLAIN QUERY PLAN
|
|
SELECT a,b,c,d,'|' FROM t1 WHERE d<>99 AND b=345 ORDER BY a DESC;
|
|
} {~/*ORDER BY*/}
|
|
|
|
do_execsql_test skipscan1-1.4 {
|
|
SELECT a,b,c,d,'|' FROM t1 WHERE c=6 ORDER BY a, b, c;
|
|
} {abc 234 6 7 | bcd 100 6 11 |}
|
|
do_execsql_test skipscan1-1.4eqp {
|
|
EXPLAIN QUERY PLAN
|
|
SELECT a,b,c,d,'|' FROM t1 WHERE c=6 ORDER BY a, b, c;
|
|
} {/* USING INDEX t1abc (ANY(a) AND ANY(b) AND c=?)*/}
|
|
do_execsql_test skipscan1-1.4sort {
|
|
EXPLAIN QUERY PLAN
|
|
SELECT a,b,c,d,'|' FROM t1 WHERE c=6 ORDER BY a, b, c;
|
|
} {~/*ORDER BY*/}
|
|
|
|
do_execsql_test skipscan1-1.5 {
|
|
SELECT a,b,c,d,'|' FROM t1 WHERE c IN (6,7) ORDER BY a, b, c;
|
|
} {abc 234 6 7 | abc 345 7 8 | bcd 100 6 11 |}
|
|
do_execsql_test skipscan1-1.5eqp {
|
|
EXPLAIN QUERY PLAN
|
|
SELECT a,b,c,d,'|' FROM t1 WHERE c IN (6,7) ORDER BY a, b, c;
|
|
} {/* USING INDEX t1abc (ANY(a) AND ANY(b) AND c=?)*/}
|
|
do_execsql_test skipscan1-1.5sort {
|
|
EXPLAIN QUERY PLAN
|
|
SELECT a,b,c,d,'|' FROM t1 WHERE c IN (6,7) ORDER BY a, b, c;
|
|
} {~/*ORDER BY*/}
|
|
|
|
do_execsql_test skipscan1-1.6 {
|
|
SELECT a,b,c,d,'|' FROM t1 WHERE c BETWEEN 6 AND 7 ORDER BY a, b, c;
|
|
} {abc 234 6 7 | abc 345 7 8 | bcd 100 6 11 |}
|
|
do_execsql_test skipscan1-1.6eqp {
|
|
EXPLAIN QUERY PLAN
|
|
SELECT a,b,c,d,'|' FROM t1 WHERE c BETWEEN 6 AND 7 ORDER BY a, b, c;
|
|
} {/* USING INDEX t1abc (ANY(a) AND ANY(b) AND c>? AND c<?)*/}
|
|
do_execsql_test skipscan1-1.6sort {
|
|
EXPLAIN QUERY PLAN
|
|
SELECT a,b,c,d,'|' FROM t1 WHERE c BETWEEN 6 AND 7 ORDER BY a, b, c;
|
|
} {~/*ORDER BY*/}
|
|
|
|
do_execsql_test skipscan1-1.7 {
|
|
SELECT a,b,c,d,'|' FROM t1 WHERE b IN (234, 345) AND c BETWEEN 6 AND 7
|
|
ORDER BY a, b;
|
|
} {abc 234 6 7 | abc 345 7 8 |}
|
|
do_execsql_test skipscan1-1.7eqp {
|
|
EXPLAIN QUERY PLAN
|
|
SELECT a,b,c,d,'|' FROM t1 WHERE b IN (234, 345) AND c BETWEEN 6 AND 7
|
|
ORDER BY a, b;
|
|
} {/* USING INDEX t1abc (ANY(a) AND b=? AND c>? AND c<?)*/}
|
|
do_execsql_test skipscan1-1.7sort {
|
|
EXPLAIN QUERY PLAN
|
|
SELECT a,b,c,d,'|' FROM t1 WHERE b IN (234, 345) AND c BETWEEN 6 AND 7
|
|
ORDER BY a, b;
|
|
} {~/*ORDER BY*/}
|
|
|
|
|
|
# Joins
|
|
#
|
|
do_execsql_test skipscan1-1.51 {
|
|
CREATE TABLE t1j(x TEXT, y INTEGER);
|
|
INSERT INTO t1j VALUES('one',1),('six',6),('ninty-nine',99);
|
|
INSERT INTO sqlite_stat1 VALUES('t1j',null,'3');
|
|
ANALYZE sqlite_master;
|
|
SELECT x, a, b, c, d, '|' FROM t1j, t1 WHERE c=y ORDER BY +a;
|
|
} {six abc 234 6 7 | six bcd 100 6 11 |}
|
|
do_execsql_test skipscan1-1.51eqp {
|
|
EXPLAIN QUERY PLAN
|
|
SELECT x, a, b, c, d, '|' FROM t1j, t1 WHERE c=y ORDER BY +a;
|
|
} {/* INDEX t1abc (ANY(a) AND ANY(b) AND c=?)*/}
|
|
|
|
do_execsql_test skipscan1-1.52 {
|
|
SELECT x, a, b, c, d, '|' FROM t1j LEFT JOIN t1 ON c=y ORDER BY +y, +a;
|
|
} {one {} {} {} {} | six abc 234 6 7 | six bcd 100 6 11 | ninty-nine {} {} {} {} |}
|
|
do_execsql_test skipscan1-1.52eqp {
|
|
EXPLAIN QUERY PLAN
|
|
SELECT x, a, b, c, d, '|' FROM t1j LEFT JOIN t1 ON c=y ORDER BY +y, +a;
|
|
} {/* INDEX t1abc (ANY(a) AND ANY(b) AND c=?)*/}
|
|
|
|
do_execsql_test skipscan1-2.1 {
|
|
CREATE TABLE t2(a TEXT, b INT, c INT, d INT,
|
|
PRIMARY KEY(a,b,c));
|
|
INSERT INTO t2 SELECT * FROM t1;
|
|
|
|
/* Fake the sqlite_stat1 table so that the query planner believes
|
|
** the table contains thousands of rows and that the first few
|
|
** columns are not selective. */
|
|
ANALYZE;
|
|
UPDATE sqlite_stat1 SET stat='10000 5000 2000 10' WHERE idx NOT NULL;
|
|
ANALYZE sqlite_master;
|
|
} {}
|
|
|
|
do_execsql_test skipscan1-2.2 {
|
|
SELECT a,b,c,d,'|' FROM t2 WHERE d<>99 AND b=345 ORDER BY a;
|
|
} {abc 345 7 8 | def 345 9 10 |}
|
|
do_execsql_test skipscan1-2.2eqp {
|
|
EXPLAIN QUERY PLAN
|
|
SELECT a,b,c,d,'|' FROM t2 WHERE d<>99 AND b=345 ORDER BY a;
|
|
} {/* USING INDEX sqlite_autoindex_t2_1 (ANY(a) AND b=?)*/}
|
|
do_execsql_test skipscan1-2.2sort {
|
|
EXPLAIN QUERY PLAN
|
|
SELECT a,b,c,d,'|' FROM t2 WHERE d<>99 AND b=345 ORDER BY a;
|
|
} {~/*ORDER BY*/}
|
|
|
|
|
|
do_execsql_test skipscan1-3.1 {
|
|
CREATE TABLE t3(a TEXT, b INT, c INT, d INT,
|
|
PRIMARY KEY(a,b,c)) WITHOUT ROWID;
|
|
INSERT INTO t3 SELECT * FROM t1;
|
|
|
|
/* Fake the sqlite_stat1 table so that the query planner believes
|
|
** the table contains thousands of rows and that the first few
|
|
** columns are not selective. */
|
|
ANALYZE;
|
|
UPDATE sqlite_stat1 SET stat='10000 5000 2000 10' WHERE idx NOT NULL;
|
|
ANALYZE sqlite_master;
|
|
} {}
|
|
|
|
do_execsql_test skipscan1-3.2 {
|
|
SELECT a,b,c,d,'|' FROM t3 WHERE b=345 ORDER BY a;
|
|
} {abc 345 7 8 | def 345 9 10 |}
|
|
do_execsql_test skipscan1-3.2eqp {
|
|
EXPLAIN QUERY PLAN
|
|
SELECT a,b,c,d,'|' FROM t3 WHERE b=345 ORDER BY a;
|
|
} {/* PRIMARY KEY (ANY(a) AND b=?)*/}
|
|
do_execsql_test skipscan1-3.2sort {
|
|
EXPLAIN QUERY PLAN
|
|
SELECT a,b,c,d,'|' FROM t3 WHERE b=345 ORDER BY a;
|
|
} {~/*ORDER BY*/}
|
|
|
|
# Ticket 520070ec7fbaac: Array overrun in the skip-scan optimization
|
|
# 2013-12-22
|
|
#
|
|
do_execsql_test skipscan1-4.1 {
|
|
CREATE TABLE t4(a,b,c,d,e,f,g,h,i);
|
|
CREATE INDEX t4all ON t4(a,b,c,d,e,f,g,h);
|
|
INSERT INTO t4 VALUES(1,2,3,4,5,6,7,8,9);
|
|
ANALYZE;
|
|
DELETE FROM sqlite_stat1;
|
|
INSERT INTO sqlite_stat1
|
|
VALUES('t4','t4all','655360 163840 40960 10240 2560 640 160 40 10');
|
|
ANALYZE sqlite_master;
|
|
SELECT i FROM t4 WHERE a=1;
|
|
SELECT i FROM t4 WHERE b=2;
|
|
SELECT i FROM t4 WHERE c=3;
|
|
SELECT i FROM t4 WHERE d=4;
|
|
SELECT i FROM t4 WHERE e=5;
|
|
SELECT i FROM t4 WHERE f=6;
|
|
SELECT i FROM t4 WHERE g=7;
|
|
SELECT i FROM t4 WHERE h=8;
|
|
} {9 9 9 9 9 9 9 9}
|
|
|
|
# Make sure skip-scan cost computation in the query planner takes into
|
|
# account the fact that the seek must occur multiple times.
|
|
#
|
|
# Prior to 2014-03-10, the costs were computed incorrectly which would
|
|
# cause index t5i2 to be used instead of t5i1 on the skipscan1-5.3.
|
|
#
|
|
do_execsql_test skipscan1-5.1 {
|
|
CREATE TABLE t5(
|
|
id INTEGER PRIMARY KEY,
|
|
loc TEXT,
|
|
lang INTEGER,
|
|
utype INTEGER,
|
|
xa INTEGER,
|
|
xd INTEGER,
|
|
xh INTEGER
|
|
);
|
|
CREATE INDEX t5i1 on t5(loc, xh, xa, utype, lang);
|
|
CREATE INDEX t5i2 ON t5(xd,loc,utype,lang);
|
|
EXPLAIN QUERY PLAN
|
|
SELECT xh, loc FROM t5 WHERE loc >= 'M' AND loc < 'N';
|
|
} {/.*COVERING INDEX t5i1 .*/}
|
|
do_execsql_test skipscan1-5.2 {
|
|
ANALYZE;
|
|
DELETE FROM sqlite_stat1;
|
|
DROP TABLE IF EXISTS sqlite_stat4;
|
|
INSERT INTO sqlite_stat1 VALUES('t5','t5i1','2702931 3 2 2 2 2');
|
|
INSERT INTO sqlite_stat1 VALUES('t5','t5i2','2702931 686 2 2 2');
|
|
ANALYZE sqlite_master;
|
|
} {}
|
|
db cache flush
|
|
do_execsql_test skipscan1-5.3 {
|
|
EXPLAIN QUERY PLAN
|
|
SELECT xh, loc FROM t5 WHERE loc >= 'M' AND loc < 'N';
|
|
} {/.*COVERING INDEX t5i1 .*/}
|
|
|
|
# The column used by the skip-scan needs to be sufficiently selective.
|
|
# See the private email from Adi Zaimi to drh@sqlite.org on 2014-09-22.
|
|
#
|
|
db close
|
|
forcedelete test.db
|
|
sqlite3 db test.db
|
|
do_execsql_test skipscan1-6.1 {
|
|
CREATE TABLE t1(a,b,c,d,e,f,g,h varchar(300));
|
|
CREATE INDEX t1ab ON t1(a,b);
|
|
ANALYZE sqlite_master;
|
|
-- Only two distinct values for the skip-scan column. Skip-scan is not used.
|
|
INSERT INTO sqlite_stat1 VALUES('t1','t1ab','500000 250000 125000');
|
|
ANALYZE sqlite_master;
|
|
EXPLAIN QUERY PLAN SELECT * FROM t1 WHERE b=1;
|
|
} {~/ANY/}
|
|
do_execsql_test skipscan1-6.2 {
|
|
-- Four distinct values for the skip-scan column. Skip-scan is used.
|
|
UPDATE sqlite_stat1 SET stat='500000 250000 62500';
|
|
ANALYZE sqlite_master;
|
|
EXPLAIN QUERY PLAN SELECT * FROM t1 WHERE b=1;
|
|
} {/ANY.a. AND b=/}
|
|
do_execsql_test skipscan1-6.3 {
|
|
-- Two distinct values for the skip-scan column again. Skip-scan is not used.
|
|
UPDATE sqlite_stat1 SET stat='500000 125000 62500';
|
|
ANALYZE sqlite_master;
|
|
EXPLAIN QUERY PLAN SELECT * FROM t1 WHERE b=1;
|
|
} {~/ANY/}
|
|
|
|
# If the sqlite_stat1 entry includes the "noskipscan" token, then never use
|
|
# skipscan with that index.
|
|
#
|
|
do_execsql_test skipscan1-7.1 {
|
|
UPDATE sqlite_stat1 SET stat='500000 125000 1 sz=100';
|
|
ANALYZE sqlite_master;
|
|
EXPLAIN QUERY PLAN SELECT * FROM t1 WHERE b=1;
|
|
} {/ANY/}
|
|
do_execsql_test skipscan1-7.2 {
|
|
UPDATE sqlite_stat1 SET stat='500000 125000 1 noskipscan sz=100';
|
|
ANALYZE sqlite_master;
|
|
EXPLAIN QUERY PLAN SELECT * FROM t1 WHERE b=1;
|
|
} {~/ANY/}
|
|
do_execsql_test skipscan1-7.3 {
|
|
UPDATE sqlite_stat1 SET stat='500000 125000 1 sz=100 noskipscan';
|
|
ANALYZE sqlite_master;
|
|
EXPLAIN QUERY PLAN SELECT * FROM t1 WHERE b=1;
|
|
} {~/ANY/}
|
|
|
|
# Ticket 8fd39115d8f46ece70e7d4b3c481d1bd86194746 2015-07-23
|
|
# Incorrect code generated for a skipscan within an OR optimization
|
|
# on a WITHOUT ROWID table.
|
|
#
|
|
do_execsql_test skipscan1-8.1 {
|
|
DROP TABLE IF EXISTS t1;
|
|
CREATE TABLE t1(x, y, PRIMARY KEY(x,y)) WITHOUT ROWID;
|
|
INSERT INTO t1(x,y) VALUES(1,'AB');
|
|
INSERT INTO t1(x,y) VALUES(2,'CD');
|
|
ANALYZE;
|
|
DROP TABLE IF EXISTS sqlite_stat4;
|
|
DELETE FROM sqlite_stat1;
|
|
INSERT INTO sqlite_stat1(tbl,idx,stat) VALUES('t1','t1','1000000 100 1');
|
|
ANALYZE sqlite_master;
|
|
SELECT * FROM t1
|
|
WHERE (y = 'AB' AND x <= 4)
|
|
OR (y = 'EF' AND x = 5);
|
|
} {1 AB}
|
|
do_execsql_test skipscan1-8.1eqp {
|
|
EXPLAIN QUERY PLAN
|
|
SELECT * FROM t1
|
|
WHERE (y = 'AB' AND x <= 4)
|
|
OR (y = 'EF' AND x = 5);
|
|
} {/ANY/}
|
|
do_execsql_test skipscan1-8.2 {
|
|
SELECT * FROM t1
|
|
WHERE y = 'AB' OR (y = 'CD' AND x = 2)
|
|
ORDER BY +x;
|
|
} {1 AB 2 CD}
|
|
|
|
# Segfault reported on the mailing list by Keith Medcalf on 2016-09-18.
|
|
# A skip-scan with a "column IN (SELECT ...)" on the second term of the
|
|
# index.
|
|
#
|
|
do_execsql_test skipscan1-9.2 {
|
|
CREATE TABLE t9a(a,b,c);
|
|
CREATE INDEX t9a_ab ON t9a(a,b);
|
|
CREATE TABLE t9b(x,y);
|
|
ANALYZE sqlite_master;
|
|
INSERT INTO sqlite_stat1 VALUES('t9a','t9a_ab','1000000 250000 1');
|
|
ANALYZE sqlite_master;
|
|
EXPLAIN QUERY PLAN
|
|
SELECT * FROM t9a WHERE b IN (SELECT x FROM t9b WHERE y!=5);
|
|
} {/USING INDEX t9a_ab .ANY.a. AND b=./}
|
|
|
|
|
|
optimization_control db skip-scan off
|
|
do_execsql_test skipscan1-9.3 {
|
|
EXPLAIN QUERY PLAN
|
|
SELECT * FROM t9a WHERE b IN (SELECT x FROM t9b WHERE y!=5);
|
|
} {/{SCAN t9a}/}
|
|
optimization_control db all on
|
|
|
|
do_execsql_test skipscan1-2.1 {
|
|
CREATE TABLE t6(a TEXT, b INT, c INT, d INT);
|
|
CREATE INDEX t6abc ON t6(a,b,c);
|
|
INSERT INTO t6 VALUES('abc',123,4,5);
|
|
|
|
ANALYZE;
|
|
DELETE FROM sqlite_stat1;
|
|
INSERT INTO sqlite_stat1 VALUES('t6','t6abc','10000 5000 2000 10');
|
|
ANALYZE sqlite_master;
|
|
DELETE FROM t6;
|
|
} {}
|
|
|
|
do_execsql_test skipscan1-2.2eqp {
|
|
EXPLAIN QUERY PLAN
|
|
SELECT a,b,c,d,'|' FROM t6 WHERE d<>99 AND b=345 ORDER BY a;
|
|
} {/* USING INDEX t6abc (ANY(a) AND b=?)*/}
|
|
do_execsql_test skipscan1-2.2 {
|
|
SELECT a,b,c,d,'|' FROM t6 WHERE d<>99 AND b=345 ORDER BY a;
|
|
} {}
|
|
|
|
do_execsql_test skipscan1-2.3eqp {
|
|
EXPLAIN QUERY PLAN
|
|
SELECT a,b,c,d,'|' FROM t6 WHERE d<>99 AND b=345 ORDER BY a DESC;
|
|
} {/* USING INDEX t6abc (ANY(a) AND b=?)*/}
|
|
do_execsql_test skipscan1-2.3 {
|
|
SELECT a,b,c,d,'|' FROM t6 WHERE d<>99 AND b=345 ORDER BY a DESC;
|
|
} {}
|
|
|
|
# 2019-07-29 Ticket ced41c7c7d6b4d36
|
|
# A skipscan query is not order-distinct
|
|
#
|
|
db close
|
|
sqlite3 db :memory:
|
|
do_execsql_test skipscan1-3.1 {
|
|
CREATE TABLE t1 (c1, c2, c3, c4, PRIMARY KEY(c4, c3));
|
|
INSERT INTO t1 VALUES(3,0,1,NULL);
|
|
INSERT INTO t1 VALUES(0,4,1,NULL);
|
|
INSERT INTO t1 VALUES(5,6,1,NULL);
|
|
INSERT INTO t1 VALUES(0,4,1,NULL);
|
|
ANALYZE sqlite_master;
|
|
INSERT INTO sqlite_stat1 VALUES('t1','sqlite_autoindex_t1_1','18 18 6');
|
|
ANALYZE sqlite_master;
|
|
SELECT DISTINCT quote(c1), quote(c2), quote(c3), quote(c4), '|'
|
|
FROM t1 WHERE t1.c3 = 1;
|
|
} {3 0 1 NULL | 0 4 1 NULL | 5 6 1 NULL |}
|
|
do_eqp_test skipscan1-3.2 {
|
|
SELECT DISTINCT quote(c1), quote(c2), quote(c3), quote(c4), '|'
|
|
FROM t1 WHERE t1.c3 = 1;
|
|
} {
|
|
QUERY PLAN
|
|
|--SEARCH t1 USING INDEX sqlite_autoindex_t1_1 (ANY(c4) AND c3=?)
|
|
`--USE TEMP B-TREE FOR DISTINCT
|
|
}
|
|
|
|
# 2020-01-06 ticket 304017f5f04a0035
|
|
#
|
|
reset_db
|
|
do_execsql_test skipscan1-4.10 {
|
|
CREATE TABLE t1(a,b INT);
|
|
INSERT INTO t1(a,b) VALUES(1,2),(3,3),(4,5);
|
|
CREATE UNIQUE INDEX i1 ON t1(b,b,a,a,a,a,a,b,a);
|
|
ANALYZE;
|
|
DROP TABLE IF EXISTS sqlite_stat4;
|
|
INSERT INTO sqlite_stat1 VALUES('t1','i1','30 30 30 2 2 2 2 2 2 2');
|
|
ANALYZE sqlite_master;
|
|
|
|
SELECT DISTINCT a
|
|
FROM t1
|
|
WHERE a = b
|
|
AND a = 3
|
|
AND b IN (1,3,2,4)
|
|
AND b >= 0
|
|
AND a <= 10;
|
|
} {3}
|
|
|
|
# 2023-03-24 https://sqlite.org/forum/forumpost/8cc1dc0fe9
|
|
#
|
|
reset_db
|
|
do_execsql_test skipscan1-5.0 {
|
|
CREATE TABLE t1(a TEXT, UNIQUE(a,a,a));
|
|
INSERT INTO t1 VALUES (hex(zeroblob(241))),(1),(2),(3);
|
|
ANALYZE;
|
|
SELECT max(a) FROM t1 WHERE a IN t1;
|
|
} {3}
|
|
|
|
finish_test
|