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# 2009 February 23
#
# 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 the reverse_select_order pragma.
#
# $Id: whereA.test,v 1.3 2009/06/10 19:33:29 drh Exp $
set testdir [file dirname $argv0]
source $testdir/tester.tcl
do_test whereA-1.1 {
db eval {
CREATE TABLE t1(a INTEGER PRIMARY KEY, b UNIQUE, c);
INSERT INTO t1 VALUES(1,2,3);
INSERT INTO t1 values(2,'hello','world');
INSERT INTO t1 VALUES(3,4.53,NULL);
SELECT * FROM t1
}
} {1 2 3 2 hello world 3 4.53 {}}
do_test whereA-1.2 {
db eval {
PRAGMA reverse_unordered_selects=1;
SELECT * FROM t1;
}
} {3 4.53 {} 2 hello world 1 2 3}
do_test whereA-1.3 {
db close
sqlite3 db test.db
db eval {
PRAGMA reverse_unordered_selects=1;
SELECT * FROM t1;
}
} {3 4.53 {} 2 hello world 1 2 3}
do_test whereA-1.4 {
db close
sqlite3 db test.db
db eval {
PRAGMA reverse_unordered_selects=1;
SELECT * FROM t1 ORDER BY rowid;
}
} {1 2 3 2 hello world 3 4.53 {}}
do_test whereA-1.5 {
db eval {
VACUUM;
SELECT * FROM t1 ORDER BY rowid;
}
} {1 2 3 2 hello world 3 4.53 {}}
do_test whereA-1.6 {
db eval {
PRAGMA reverse_unordered_selects;
}
} {1}
do_test whereA-1.7 {
db close
sqlite3 db test.db
db eval {
PRAGMA reverse_unordered_selects=1;
VACUUM;
SELECT * FROM t1;
}
} {3 4.53 {} 2 hello world 1 2 3}
do_execsql_test whereA-1.8 {
SELECT * FROM t1 WHERE b=2 AND a IS NULL;
} {}
do_execsql_test whereA-1.9 {
SELECT * FROM t1 WHERE b=2 AND a IS NOT NULL;
} {1 2 3}
do_test whereA-2.1 {
db eval {
PRAGMA reverse_unordered_selects=0;
SELECT * FROM t1 WHERE a>0;
}
} {1 2 3 2 hello world 3 4.53 {}}
do_test whereA-2.2 {
db eval {
PRAGMA reverse_unordered_selects=1;
SELECT * FROM t1 WHERE a>0;
}
} {3 4.53 {} 2 hello world 1 2 3}
do_test whereA-2.3 {
db eval {
PRAGMA reverse_unordered_selects=1;
SELECT * FROM t1 WHERE a>0 ORDER BY rowid;
}
} {1 2 3 2 hello world 3 4.53 {}}
do_test whereA-3.1 {
db eval {
PRAGMA reverse_unordered_selects=0;
SELECT * FROM t1 WHERE b>0;
}
} {1 2 3 3 4.53 {} 2 hello world}
do_test whereA-3.2 {
db eval {
PRAGMA reverse_unordered_selects=1;
SELECT * FROM t1 WHERE b>0;
}
} {2 hello world 3 4.53 {} 1 2 3}
do_test whereA-3.3 {
db eval {
PRAGMA reverse_unordered_selects=1;
SELECT * FROM t1 WHERE b>0 ORDER BY b;
}
} {1 2 3 3 4.53 {} 2 hello world}
do_test whereA-4.1 {
db eval {
CREATE TABLE t2(x);
INSERT INTO t2 VALUES(1);
INSERT INTO t2 VALUES(2);
SELECT x FROM t2;
}
} {2 1}
# Do an SQL statement. Append the search count to the end of the result.
#
proc count sql {
set ::sqlite_sort_count 0
return [concat [execsql $sql] $::sqlite_sort_count]
}
do_test whereA-4.2 { ;# Ticket #3904
db eval {
CREATE INDEX t2x ON t2(x);
}
count {
SELECT x FROM t2;
}
} {2 1 0}
do_test whereA-4.3 {
count {
SELECT x FROM t2 ORDER BY x;
}
} {1 2 0}
do_test whereA-4.4 {
count {
SELECT x FROM t2 ORDER BY x DESC;
}
} {2 1 0}
do_test whereA-4.5 {
db eval {DROP INDEX t2x;}
count {
SELECT x FROM t2 ORDER BY x;
}
} {1 2 1}
do_test whereA-4.6 {
count {
SELECT x FROM t2 ORDER BY x DESC;
}
} {2 1 1}
# Ticket https://sqlite.org/src/tktview/cb91bf4290c211 2017-08-01
# Assertion fault following PRAGMA reverse_unordered_selects=ON.
#
do_execsql_test whereA-5.1 {
PRAGMA reverse_unordered_selects=on;
DROP TABLE IF EXISTS t1;
CREATE TABLE t1(a,b);
INSERT INTO t1 VALUES(1,2);
CREATE INDEX t1b ON t1(b);
SELECT a FROM t1 WHERE b=-99 OR b>1;
} {1}
# 2020-10-02 OSSFuzz find for an issue introduced by a check-in
# on the previous day.
#
reset_db
do_execsql_test whereA-6.1 {
CREATE TABLE t1(a, b);
CREATE INDEX t1aa ON t1(a,a);
INSERT INTO t1 VALUES(1,2);
ANALYZE;
UPDATE sqlite_stat1 SET stat='27 3 3' WHERE idx='t1aa';
ANALYZE sqlite_schema;
PRAGMA reverse_unordered_selects (1) ;
SELECT a FROM t1 WHERE a=1 OR a=2;
} {1}
finish_test
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