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sqlite/test/indexexpr1.test
drh 2cbe14098b Do not cover expressions using an indexed expression if the indexed expression 
is a function that might set a subtype.

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2023-11-08 18:08:07 +00:00

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# 2015-08-31
#
# 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 regression tests for SQLite library. The
# focus of this file is testing indexes on expressions.
#
set testdir [file dirname $argv0]
source $testdir/tester.tcl
do_execsql_test indexexpr1-100 {
CREATE TABLE t1(a,b,c);
INSERT INTO t1(a,b,c)
/* 123456789 123456789 123456789 123456789 123456789 123456789 */
VALUES('In_the_beginning_was_the_Word',1,1),
('and_the_Word_was_with_God',1,2),
('and_the_Word_was_God',1,3),
('The_same_was_in_the_beginning_with_God',2,1),
('All_things_were_made_by_him',3,1),
('and_without_him_was_not_any_thing_made_that_was_made',3,2);
CREATE INDEX t1a1 ON t1(substr(a,1,12));
} {}
do_execsql_test indexexpr1-110 {
SELECT b, c, '|' FROM t1 WHERE substr(a,1,12)=='and_the_Word' ORDER BY b, c;
} {1 2 | 1 3 |}
do_execsql_test indexexpr1-110eqp {
EXPLAIN QUERY PLAN
SELECT b, c, '|' FROM t1 WHERE substr(a,1,12)=='and_the_Word' ORDER BY b, c;
} {/USING INDEX t1a1/}
do_execsql_test indexexpr1-120 {
SELECT b, c, '|' FROM t1 WHERE 'and_the_Word'==substr(a,1,12) ORDER BY b, c;
} {1 2 | 1 3 |}
do_execsql_test indexexpr1-120eqp {
EXPLAIN QUERY PLAN
SELECT b, c, '|' FROM t1 WHERE 'and_the_Word'==substr(a,1,12) ORDER BY b, c;
} {/USING INDEX t1a1/}
do_execsql_test indexexpr1-130 {
CREATE INDEX t1ba ON t1(b,substr(a,2,3),c);
SELECT c FROM t1 WHERE b=1 AND substr(a,2,3)='nd_' ORDER BY c;
} {2 3}
do_execsql_test indexexpr1-130eqp {
EXPLAIN QUERY PLAN
SELECT c FROM t1 WHERE b=1 AND substr(a,2,3)='nd_' ORDER BY c;
} {/USING INDEX t1ba/}
do_execsql_test indexexpr1-140 {
SELECT rowid, substr(a,b,3), '|' FROM t1 ORDER BY 2;
} {1 In_ | 2 and | 3 and | 6 d_w | 4 he_ | 5 l_t |}
do_execsql_test indexexpr1-141 {
CREATE INDEX t1abx ON t1(substr(a,b,3));
SELECT rowid FROM t1 WHERE substr(a,b,3)<='and' ORDER BY +rowid;
} {1 2 3}
do_execsql_test indexexpr1-141eqp {
EXPLAIN QUERY PLAN
SELECT rowid FROM t1 WHERE substr(a,b,3)<='and' ORDER BY +rowid;
} {/USING INDEX t1abx/}
do_execsql_test indexexpr1-142 {
SELECT rowid FROM t1 WHERE +substr(a,b,3)<='and' ORDER BY +rowid;
} {1 2 3}
do_execsql_test indexexpr1-150 {
SELECT rowid FROM t1 WHERE substr(a,b,3) IN ('and','l_t','xyz')
ORDER BY +rowid;
} {2 3 5}
do_execsql_test indexexpr1-150eqp {
EXPLAIN QUERY PLAN
SELECT rowid FROM t1 WHERE substr(a,b,3) IN ('and','l_t','xyz')
ORDER BY +rowid;
} {/USING INDEX t1abx/}
ifcapable altertable {
do_execsql_test indexexpr1-160 {
ALTER TABLE t1 ADD COLUMN d;
UPDATE t1 SET d=length(a);
CREATE INDEX t1a2 ON t1(SUBSTR(a, 27, 3)) WHERE d>=29;
SELECT rowid, b, c FROM t1
WHERE substr(a,27,3)=='ord' AND d>=29;
} {1 1 1}
do_execsql_test indexexpr1-160eqp {
EXPLAIN QUERY PLAN
SELECT rowid, b, c FROM t1
WHERE substr(a,27,3)=='ord' AND d>=29;
} {/USING INDEX t1a2/}
}
# ORDER BY using an indexed expression
#
do_execsql_test indexexpr1-170 {
CREATE INDEX t1alen ON t1(length(a));
SELECT length(a) FROM t1 ORDER BY length(a);
} {20 25 27 29 38 52}
do_execsql_test indexexpr1-170eqp {
EXPLAIN QUERY PLAN
SELECT length(a) FROM t1 ORDER BY length(a);
} {/SCAN t1 USING INDEX t1alen/}
do_execsql_test indexexpr1-171 {
SELECT length(a) FROM t1 ORDER BY length(a) DESC;
} {52 38 29 27 25 20}
do_execsql_test indexexpr1-171eqp {
EXPLAIN QUERY PLAN
SELECT length(a) FROM t1 ORDER BY length(a) DESC;
} {/SCAN t1 USING INDEX t1alen/}
do_execsql_test indexexpr1-200 {
DROP TABLE t1;
CREATE TABLE t1(id ANY PRIMARY KEY, a,b,c) WITHOUT ROWID;
INSERT INTO t1(id,a,b,c)
VALUES(1,'In_the_beginning_was_the_Word',1,1),
(2,'and_the_Word_was_with_God',1,2),
(3,'and_the_Word_was_God',1,3),
(4,'The_same_was_in_the_beginning_with_God',2,1),
(5,'All_things_were_made_by_him',3,1),
(6,'and_without_him_was_not_any_thing_made_that_was_made',3,2);
CREATE INDEX t1a1 ON t1(substr(a,1,12));
} {}
do_execsql_test indexexpr1-210 {
SELECT b, c, '|' FROM t1 WHERE substr(a,1,12)=='and_the_Word' ORDER BY b, c;
} {1 2 | 1 3 |}
do_execsql_test indexexpr1-210eqp {
EXPLAIN QUERY PLAN
SELECT b, c, '|' FROM t1 WHERE substr(a,1,12)=='and_the_Word' ORDER BY b, c;
} {/USING INDEX t1a1/}
do_execsql_test indexexpr1-220 {
SELECT b, c, '|' FROM t1 WHERE 'and_the_Word'==substr(a,1,12) ORDER BY b, c;
} {1 2 | 1 3 |}
do_execsql_test indexexpr1-220eqp {
EXPLAIN QUERY PLAN
SELECT b, c, '|' FROM t1 WHERE 'and_the_Word'==substr(a,1,12) ORDER BY b, c;
} {/USING INDEX t1a1/}
do_execsql_test indexexpr1-230 {
CREATE INDEX t1ba ON t1(b,substr(a,2,3),c);
SELECT c FROM t1 WHERE b=1 AND substr(a,2,3)='nd_' ORDER BY c;
} {2 3}
do_execsql_test indexexpr1-230eqp {
EXPLAIN QUERY PLAN
SELECT c FROM t1 WHERE b=1 AND substr(a,2,3)='nd_' ORDER BY c;
} {/USING INDEX t1ba/}
do_execsql_test indexexpr1-240 {
SELECT id, substr(a,b,3), '|' FROM t1 ORDER BY 2;
} {1 In_ | 2 and | 3 and | 6 d_w | 4 he_ | 5 l_t |}
do_execsql_test indexexpr1-241 {
CREATE INDEX t1abx ON t1(substr(a,b,3));
SELECT id FROM t1 WHERE substr(a,b,3)<='and' ORDER BY +id;
} {1 2 3}
do_execsql_test indexexpr1-241eqp {
EXPLAIN QUERY PLAN
SELECT id FROM t1 WHERE substr(a,b,3)<='and' ORDER BY +id;
} {/USING INDEX t1abx/}
do_execsql_test indexexpr1-242 {
SELECT id FROM t1 WHERE +substr(a,b,3)<='and' ORDER BY +id;
} {1 2 3}
do_execsql_test indexexpr1-250 {
SELECT id FROM t1 WHERE substr(a,b,3) IN ('and','l_t','xyz')
ORDER BY +id;
} {2 3 5}
do_execsql_test indexexpr1-250eqp {
EXPLAIN QUERY PLAN
SELECT id FROM t1 WHERE substr(a,b,3) IN ('and','l_t','xyz')
ORDER BY +id;
} {/USING INDEX t1abx/}
ifcapable altertable {
do_execsql_test indexexpr1-260 {
ALTER TABLE t1 ADD COLUMN d;
UPDATE t1 SET d=length(a);
CREATE INDEX t1a2 ON t1(SUBSTR(a, 27, 3)) WHERE d>=29;
SELECT id, b, c FROM t1
WHERE substr(a,27,3)=='ord' AND d>=29;
} {1 1 1}
do_execsql_test indexexpr1-260eqp {
EXPLAIN QUERY PLAN
SELECT id, b, c FROM t1
WHERE substr(a,27,3)=='ord' AND d>=29;
} {/USING INDEX t1a2/}
}
do_catchsql_test indexexpr1-300 {
CREATE TABLE t2(a,b,c); INSERT INTO t2 VALUES(1,2,3);
CREATE INDEX t2x1 ON t2(a,b+random());
} {1 {non-deterministic functions prohibited in index expressions}}
do_catchsql_test indexexpr1-301 {
CREATE INDEX t2x1 ON t2(julianday('now',a));
} {1 {non-deterministic use of julianday() in an index}}
do_catchsql_test indexexpr1-310 {
CREATE INDEX t2x2 ON t2(a,b+(SELECT 15));
} {1 {subqueries prohibited in index expressions}}
do_catchsql_test indexexpr1-320 {
CREATE TABLE e1(x,y,UNIQUE(y,substr(x,1,5)));
} {1 {expressions prohibited in PRIMARY KEY and UNIQUE constraints}}
do_catchsql_test indexexpr1-330 {
CREATE TABLE e1(x,y,PRIMARY KEY(y,substr(x,1,5)));
} {1 {expressions prohibited in PRIMARY KEY and UNIQUE constraints}}
do_catchsql_test indexexpr1-331 {
CREATE TABLE e1(x,y,PRIMARY KEY(y,substr(x,1,5))) WITHOUT ROWID;
} {1 {expressions prohibited in PRIMARY KEY and UNIQUE constraints}}
do_catchsql_test indexexpr1-340 {
CREATE TABLE e1(x,y,FOREIGN KEY(substr(y,1,5)) REFERENCES t1);
} {1 {near "(": syntax error}}
do_execsql_test indexexpr1-400 {
CREATE TABLE t3(a,b,c);
WITH RECURSIVE c(x) AS (VALUES(1) UNION SELECT x+1 FROM c WHERE x<30)
INSERT INTO t3(a,b,c)
SELECT x, printf('ab%04xyz',x), random() FROM c;
CREATE UNIQUE INDEX t3abc ON t3(CAST(a AS text), b, substr(c,1,3));
SELECT a FROM t3 WHERE CAST(a AS text)<='10' ORDER BY +a;
PRAGMA integrity_check;
} {1 10 ok}
do_catchsql_test indexexpr1-410 {
INSERT INTO t3 SELECT * FROM t3 WHERE rowid=10;
} {1 {UNIQUE constraint failed: index 't3abc'}}
do_execsql_test indexexpr1-500 {
CREATE TABLE t5(a);
CREATE TABLE cnt(x);
WITH RECURSIVE
c(x) AS (VALUES(1) UNION ALL SELECT x+1 FROM c WHERE x<5)
INSERT INTO cnt(x) SELECT x FROM c;
INSERT INTO t5(a) SELECT printf('abc%03dxyz',x) FROM cnt;
CREATE INDEX t5ax ON t5( substr(a,4,3) );
} {}
do_execsql_test indexexpr1-510 {
-- The use of the "k" alias in the WHERE clause is technically
-- illegal, but SQLite allows it for historical reasons. In this
-- test and the next, verify that "k" can be used by the t5ax index
SELECT substr(a,4,3) AS k FROM cnt, t5 WHERE k=printf('%03d',x);
} {001 002 003 004 005}
do_execsql_test indexexpr1-510eqp {
EXPLAIN QUERY PLAN
SELECT substr(a,4,3) AS k FROM cnt, t5 WHERE k=printf('%03d',x);
} {/USING INDEX t5ax/}
# Skip-scan on an indexed expression
#
do_execsql_test indexexpr1-600 {
DROP TABLE IF EXISTS t4;
CREATE TABLE t4(a,b,c,d,e,f,g,h,i);
CREATE INDEX t4all ON t4(a,b,c<d,e,f,i,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','600000 160000 40000 10000 2000 600 100 40 10');
ANALYZE sqlite_master;
SELECT i FROM t4 WHERE e=5;
} {9}
# Indexed expressions on both sides of an == in a WHERE clause.
#
do_execsql_test indexexpr1-700 {
DROP TABLE IF EXISTS t7;
CREATE TABLE t7(a,b,c);
INSERT INTO t7(a,b,c) VALUES(1,2,2),('abc','def','def'),(4,5,6);
CREATE INDEX t7b ON t7(+b);
CREATE INDEX t7c ON t7(+c);
SELECT *, '|' FROM t7 WHERE +b=+c ORDER BY +a;
} {1 2 2 | abc def def |}
do_execsql_test indexexpr1-710 {
CREATE TABLE t71(a,b,c);
CREATE INDEX t71bc ON t71(b+c);
CREATE TABLE t72(x,y,z);
CREATE INDEX t72yz ON t72(y+z);
INSERT INTO t71(a,b,c) VALUES(1,11,2),(2,7,15),(3,5,4);
INSERT INTO t72(x,y,z) VALUES(1,10,3),(2,8,14),(3,9,9);
SELECT a, x, '|' FROM t71, t72
WHERE b+c=y+z
ORDER BY +a, +x;
} {1 1 | 2 2 |}
# Collating sequences on indexes of expressions
#
do_execsql_test indexexpr1-800 {
DROP TABLE IF EXISTS t8;
CREATE TABLE t8(a INTEGER PRIMARY KEY, b TEXT);
CREATE UNIQUE INDEX t8bx ON t8(substr(b,2,4) COLLATE nocase);
INSERT INTO t8(a,b) VALUES(1,'Alice'),(2,'Bartholemew'),(3,'Cynthia');
SELECT * FROM t8 WHERE substr(b,2,4)='ARTH' COLLATE nocase;
} {2 Bartholemew}
do_catchsql_test indexexpr1-810 {
INSERT INTO t8(a,b) VALUES(4,'BARTHMERE');
} {1 {UNIQUE constraint failed: index 't8bx'}}
do_catchsql_test indexexpr1-820 {
DROP INDEX t8bx;
CREATE UNIQUE INDEX t8bx ON t8(substr(b,2,4) COLLATE rtrim);
INSERT INTO t8(a,b) VALUES(4,'BARTHMERE');
} {0 {}}
# Check that PRAGMA integrity_check works correctly on a
# UNIQUE index that includes rowid and expression terms.
#
do_execsql_test indexexpr1-900 {
CREATE TABLE t9(a,b,c,d);
CREATE UNIQUE INDEX t9x1 ON t9(c,abs(d),b);
INSERT INTO t9(rowid,a,b,c,d) VALUES(1,2,3,4,5);
INSERT INTO t9(rowid,a,b,c,d) VALUES(2,NULL,NULL,NULL,NULL);
INSERT INTO t9(rowid,a,b,c,d) VALUES(3,NULL,NULL,NULL,NULL);
INSERT INTO t9(rowid,a,b,c,d) VALUES(4,5,6,7,8);
PRAGMA integrity_check;
} {ok}
do_catchsql_test indexexpr1-910 {
INSERT INTO t9(a,b,c,d) VALUES(5,6,7,-8);
} {1 {UNIQUE constraint failed: index 't9x1'}}
# Test cases derived from a NEVER() maro failure discovered by
# Jonathan Metzman using AFL
#
do_execsql_test indexexpr1-1000 {
DROP TABLE IF EXISTS t0;
CREATE TABLE t0(a,b,t);
CREATE INDEX i ON t0(a in(0,1));
INSERT INTO t0 VALUES(0,1,2),(2,3,4),(5,6,7);
UPDATE t0 SET b=99 WHERE (a in(0,1))=0;
SELECT *, '|' FROM t0 ORDER BY +a;
} {0 1 2 | 2 99 4 | 5 99 7 |}
do_execsql_test indexexpr1-1010 {
UPDATE t0 SET b=88 WHERE (a in(0,1))=1;
SELECT *, '|' FROM t0 ORDER BY +a;
} {0 88 2 | 2 99 4 | 5 99 7 |}
# 2016-10-10
# Make sure indexes on expressions skip over initial NULL values in the
# index as they are suppose to do.
# Ticket https://www.sqlite.org/src/tktview/4baa46491212947
#
do_execsql_test indexexpr1-1100 {
DROP TABLE IF EXISTS t1;
CREATE TABLE t1(a);
INSERT INTO t1 VALUES(NULL),(1);
SELECT '1:', typeof(a), a FROM t1 WHERE a<10;
SELECT '2:', typeof(a), a FROM t1 WHERE a+0<10;
CREATE INDEX t1x1 ON t1(a);
CREATE INDEX t1x2 ON t1(a+0);
SELECT '3:', typeof(a), a FROM t1 WHERE a<10;
SELECT '4:', typeof(a), a FROM t1 WHERE a+0<10;
} {1: integer 1 2: integer 1 3: integer 1 4: integer 1}
do_execsql_test indexexpr1-1200 {
CREATE TABLE t10(a int, b int, c int, d int);
INSERT INTO t10(a, b, c, d) VALUES(0, 0, 2, 2);
INSERT INTO t10(a, b, c, d) VALUES(0, 0, 0, 0);
INSERT INTO t10(a, b, c, d) VALUES(0, 0, 1, 1);
INSERT INTO t10(a, b, c, d) VALUES(1, 1, 1, 1);
INSERT INTO t10(a, b, c, d) VALUES(1, 1, 0, 0);
INSERT INTO t10(a, b, c, d) VALUES(2, 2, 0, 0);
SELECT a+b, c+d FROM t10 ORDER BY a+b, c+d;
} {
0 0 0 2 0 4 2 0 2 2 4 0
}
do_execsql_test indexexpr1-1200.1 {
CREATE INDEX t10_ab ON t10(a+b);
}
do_execsql_test indexexpr1-1200.2 {
SELECT a+b, c+d FROM t10 ORDER BY a+b, c+d;
} {
0 0 0 2 0 4 2 0 2 2 4 0
}
do_execsql_test indexexpr1-1200.3 {
CREATE INDEX t10_abcd ON t10(a+b,c+d);
}
do_execsql_test indexexpr1-1200.4 {
SELECT a+b, c+d FROM t10 ORDER BY a+b, c+d;
} {
0 0 0 2 0 4 2 0 2 2 4 0
}
# Ticket https://www.sqlite.org/src/tktview/eb703ba7b50c1a
# Incorrect result using an index on an expression with a collating function
#
do_execsql_test indexexpr1-1300.1 {
CREATE TABLE t1300(a INTEGER PRIMARY KEY, b);
INSERT INTO t1300 VALUES(1,'coffee'),(2,'COFFEE'),(3,'stress'),(4,'STRESS');
CREATE INDEX t1300bexpr ON t1300( substr(b,4) );
SELECT a FROM t1300 WHERE substr(b,4)='ess' COLLATE nocase ORDER BY +a;
} {3 4}
# Ticket https://sqlite.org/src/tktview/aa98619a
# Assertion fault using an index on a constant
#
do_execsql_test indexexpr1-1400 {
CREATE TABLE t1400(x TEXT);
CREATE INDEX t1400x ON t1400(1); -- Index on a constant
SELECT 1 IN (SELECT 2) FROM t1400;
} {}
do_execsql_test indexexpr1-1410 {
INSERT INTO t1400 VALUES('a'),('b');
SELECT 1 IN (SELECT 2) FROM t1400;
} {0 0}
do_execsql_test indexexpr1-1420 {
SELECT 1 IN (SELECT 2 UNION ALL SELECT 1) FROM t1400;
} {1 1}
do_execsql_test indexexpr1-1430 {
DROP INDEX t1400x;
CREATE INDEX t1400x ON t1400(abs(15+3));
SELECT abs(15+3) IN (SELECT 17 UNION ALL SELECT 18) FROM t1;
} {1 1}
# 2018-01-02 ticket https://sqlite.org/src/info/dc3f932f5a147771
# A REPLACE into a table that uses an index on an expression causes
# an assertion fault. Problem discovered by OSSFuzz.
#
do_execsql_test indexexpr1-1500 {
CREATE TABLE t1500(a INT PRIMARY KEY, b INT UNIQUE);
CREATE INDEX t1500ab ON t1500(a*b);
INSERT INTO t1500(a,b) VALUES(1,2);
REPLACE INTO t1500(a,b) VALUES(1,3); -- formerly caused assertion fault
SELECT * FROM t1500;
} {1 3}
# 2018-01-03 OSSFuzz discovers another test case for the same problem
# above.
#
do_execsql_test indexexpr1-1510 {
DROP TABLE IF EXISTS t1;
CREATE TABLE t1(a PRIMARY KEY,b UNIQUE);
REPLACE INTO t1 VALUES(2, 1);
REPLACE INTO t1 SELECT 6,1;
CREATE INDEX t1aa ON t1(a-a);
REPLACE INTO t1 SELECT a, randomblob(a) FROM t1
} {}
# 2018-01-31 https://www.sqlite.org/src/tktview/343634942dd54ab57b702411
# When an index on an expression depends on the string representation of
# a numeric table column, trouble can arise since there are multiple
# string that can map to the same numeric value. (Ex: 123, 0123, 000123).
#
do_execsql_test indexexpr1-1600 {
DROP TABLE IF EXISTS t1;
CREATE TABLE t1 (a INTEGER, b);
CREATE INDEX idx1 ON t1 (lower(a));
INSERT INTO t1 VALUES('0001234',3);
PRAGMA integrity_check;
} {ok}
do_execsql_test indexexpr1-1610 {
INSERT INTO t1 VALUES('1234',0),('001234',2),('01234',1);
SELECT b FROM t1 WHERE lower(a)='1234' ORDER BY +b;
} {0 1 2 3}
do_execsql_test indexexpr1-1620 {
SELECT b FROM t1 WHERE lower(a)='01234' ORDER BY +b;
} {}
# 2019-08-09 https://www.sqlite.org/src/info/9080b6227fabb466
# ExprImpliesExpr theorem prover bug:
# "(NULL IS FALSE) IS FALSE" does not imply "NULL IS NULL"
#
do_execsql_test indexexpr1-1700 {
DROP TABLE IF EXISTS t0;
CREATE TABLE t0(c0);
INSERT INTO t0(c0) VALUES (0);
CREATE INDEX i0 ON t0(NULL > c0) WHERE (NULL NOT NULL);
SELECT * FROM t0 WHERE ((NULL IS FALSE) IS FALSE);
} {0}
# 2019-09-02 https://www.sqlite.org/src/tktview/57af00b6642ecd6848
# When the expression of an an index-on-expression references a
# table column of type REAL that is actually holding an MEM_IntReal
# value, be sure to use the REAL value and not the INT value when
# computing the expression.
#
ifcapable like_match_blobs {
do_execsql_test indexexpr1-1800 {
DROP TABLE IF EXISTS t0;
CREATE TABLE t0(c0 REAL, c1 TEXT);
CREATE INDEX i0 ON t0(+c0, c0);
INSERT INTO t0(c0) VALUES(0);
SELECT CAST(+ t0.c0 AS BLOB) LIKE 0 FROM t0;
} {0}
do_execsql_test indexexpr1-1810 {
SELECT CAST(+ t0.c0 AS BLOB) LIKE '0.0' FROM t0;
} {1}
do_execsql_test indexexpr1-1820 {
DROP TABLE IF EXISTS t1;
CREATE TABLE t1(x REAL);
CREATE INDEX t1x ON t1(x, +x);
INSERT INTO t1(x) VALUES(2);
SELECT +x FROM t1 WHERE x=2;
} {2.0}
}
# 2022-04-30 https://sqlite.org/forum/info/7efabf4b03328e57
# Assertion fault during a DELETE INDEXED BY.
#
reset_db
do_execsql_test indexexpr1-1900 {
CREATE TABLE t1(x TEXT PRIMARY KEY, y TEXT, z INT);
INSERT INTO t1(x,y,z) VALUES('alpha','ALPHA',1),('bravo','charlie',1);
CREATE INDEX i1 ON t1(+y COLLATE NOCASE);
SELECT * FROM t1;
} {alpha ALPHA 1 bravo charlie 1}
do_execsql_test indexexpr1-1910 {
DELETE FROM t1 INDEXED BY i1
WHERE x IS +y COLLATE NOCASE IN (SELECT z FROM t1)
RETURNING *;
} {alpha ALPHA 1}
do_execsql_test indexexpr1-1920 {
SELECT * FROM t1;
} {bravo charlie 1}
# 2022-11-28 Ticket 695a1a53de
# Improved ability to recognize that an index on an expression is a
# covering index.
#
reset_db
do_execsql_test indexexpr1-2000 {
CREATE TABLE t1(a INT, b TEXT);
INSERT INTO t1(a,b) VALUES
(10, '{"one":5,"two":6}'),
(10, '{"one":50,"two":60}'),
(10, '{"three":99}'),
(11, '{"one":100,"two":200}');
CREATE INDEX t1_one ON t1(a, b->>'one');
CREATE INDEX t1_two ON t1(a, b->>'two');
}
do_execsql_test indexexpr1-2010 {
EXPLAIN QUERY PLAN
SELECT sum(b->>'one') FROM t1 WHERE a=10; /* Query AA */
} {/.* t1_one .*/}
do_execsql_test indexexpr1-2011 {
SELECT sum(b->>'one') FROM t1 WHERE a=10; /* Query AA */
} {55}
do_execsql_test indexexpr1-2020 {
EXPLAIN QUERY PLAN
SELECT sum(b->>'two') FROM t1 WHERE a=10; /* Query BB */
} {/.* t1_two .*/}
do_execsql_test indexexpr1-2021 {
SELECT sum(b->>'two') FROM t1 WHERE a=10; /* Query BB */
} {66}
do_execsql_test indexexpr1-2030 {
DROP TABLE t1;
CREATE TABLE t1(a INT, b TEXT, c INT, d INT);
INSERT INTO t1(a,b,c,d) VALUES
(1, '{"x":1}', 12, 3),
(1, '{"x":2}', 4, 5),
(1, '{"x":1}', 6, 11),
(2, '{"x":1}', 22, 3),
(2, '{"x":2}', 4, 5),
(3, '{"x":1}', 6, 7);
CREATE INDEX t1x ON t1(d, a, b->>'x', c);
}
do_execsql_test indexexpr1-2030 {
SELECT a,
SUM(1) AS t1,
SUM(CASE WHEN b->>'x'=1 THEN 1 END) AS t2,
SUM(c) AS t3,
SUM(CASE WHEN b->>'x'=1 THEN c END) AS t4
FROM t1;
} {1 6 4 54 46}
do_execsql_test indexexpr1-2030 {
explain query plan
SELECT a,
SUM(1) AS t1,
SUM(CASE WHEN b->>'x'=1 THEN 1 END) AS t2,
SUM(c) AS t3,
SUM(CASE WHEN b->>'x'=1 THEN c END) AS t4
FROM t1;
} {/.*SCAN t1 USING INDEX t1x.*/}
reset_db
do_execsql_test indexexpr1-2100 {
CREATE TABLE t1(a INTEGER PRIMARY KEY, b INT);
INSERT INTO t1(a,b) VALUES(1,0);
CREATE INDEX x1 ON t1( "y" );
CREATE INDEX x2 ON t1( +"y" );
CREATE INDEX x3 ON t1( +'y' );
CREATE INDEX x4 ON t1( "y*" );
}
do_execsql_test indexexpr1-2110 {
UPDATE t1 SET b=100 WHERE (SELECT 'y') GLOB "y";
SELECT b FROM t1;
} 100
do_execsql_test indexexpr1-2120 {
UPDATE t1 SET b=200 WHERE (SELECT 'y') GLOB +"y";
SELECT b FROM t1;
} 200
do_execsql_test indexexpr1-2130 {
UPDATE t1 SET b=300 WHERE (SELECT 'y') GLOB +'y';
SELECT b FROM t1;
} 300
do_execsql_test indexexpr1-2140 {
UPDATE t1 SET b=400 WHERE (SELECT 'y') GLOB "y*";
SELECT b FROM t1;
} 400
# 2023-04-18 Forum post https://sqlite.org/forum/forumpost/f34e32d120 from
# Alexis King.
#
# This problem originates at check-in b9190d3da70c4171 (2022-11-25).
# A similar problem arose on 2023-03-04 at
# https://sqlite.org/forum/forumpost/a68313d054 and was fixed at
# check-in e06973876993926f. See the test case tkt-99378-400.
#
reset_db
do_execsql_test indexexpr1-2200 {
CREATE TABLE t1(id INTEGER PRIMARY KEY, tag INT);
INSERT INTO t1 VALUES (0, 7), (1, 8);
CREATE TABLE t2(type INT, t1_id INT, value INT);
INSERT INTO t2 VALUES (0, 0, 100), (0, 1, 101);
CREATE INDEX t1x ON t1(-tag);
SELECT u.tag, v.max_value
FROM (SELECT tag FROM t1 GROUP BY -tag) u
JOIN (SELECT t1.tag AS "tag", t2.type AS "type",
MAX(t2.value) AS "max_value"
FROM t1
JOIN t2 ON t2.t1_id = t1.id
GROUP BY t2.type, t1.tag
) v ON v.type = 0 AND v.tag = u.tag;
} {7 100 8 101}
# 2023-11-08 Forum post https://sqlite.org/forum/forumpost/68d284c86b082c3e
#
# Functions that return subtypes and that are indexed cannot be used to
# cover function calls from the main table, since the indexed value does
# not know the subtype.
#
reset_db
do_execsql_test indexexpr1-2300 {
CREATE TABLE t1(x INT, y TEXT);
INSERT INTO t1(x,y) VALUES(1,'{b:5}');
CREATE INDEX t1j ON t1(json(y));
SELECT json_insert('{}', '$.a', json(y)) FROM t1;
} {{{"a":{"b":5}}}}
finish_test
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