# 2001 September 15
#
# 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 UNION, INTERSECT and EXCEPT operators
# in SELECT statements.
#
# $Id: select4.test,v 1.4 2001/09/16 00:13:28 drh Exp $
set testdir [file dirname $argv0]
source $testdir/tester.tcl
# Build some test data
#
set fd [open data1.txt w]
for {set i 1} {$i<32} {incr i} {
for {set j 0} {pow(2,$j)<$i} {incr j} {}
puts $fd "$i\t$j"
}
close $fd
execsql {
CREATE TABLE t1(n int, log int);
COPY t1 FROM 'data1.txt'
}
file delete data1.txt
do_test select4-1.0 {
execsql {SELECT DISTINCT log FROM t1 ORDER BY log}
} {0 1 2 3 4 5}
# Union All operator
#
do_test select4-1.1a {
lsort [execsql {SELECT DISTINCT log FROM t1}]
} {0 1 2 3 4 5}
do_test select4-1.1b {
lsort [execsql {SELECT n FROM t1 WHERE log=3}]
} {5 6 7 8}
do_test select4-1.1c {
execsql {
SELECT DISTINCT log FROM t1
UNION ALL
SELECT n FROM t1 WHERE log=3
ORDER BY log;
}
} {0 1 2 3 4 5 5 6 7 8}
do_test select4-1.2 {
execsql {
SELECT log FROM t1 WHERE n IN
(SELECT DISTINCT log FROM t1 UNION ALL
SELECT n FROM t1 WHERE log=3)
ORDER BY log;
}
} {0 1 2 2 3 3 3 3}
do_test select4-1.3 {
set v [catch {execsql {
SELECT DISTINCT log FROM t1 ORDER BY log
UNION ALL
SELECT n FROM t1 WHERE log=3
ORDER BY log;
}} msg]
lappend v $msg
} {1 {ORDER BY clause should come after UNION ALL not before}}
# Union operator
#
do_test select4-2.1 {
execsql {
SELECT DISTINCT log FROM t1
UNION
SELECT n FROM t1 WHERE log=3
ORDER BY log;
}
} {0 1 2 3 4 5 6 7 8}
do_test select4-2.2 {
execsql {
SELECT log FROM t1 WHERE n IN
(SELECT DISTINCT log FROM t1 UNION
SELECT n FROM t1 WHERE log=3)
ORDER BY log;
}
} {0 1 2 2 3 3 3 3}
do_test select4-2.3 {
set v [catch {execsql {
SELECT DISTINCT log FROM t1 ORDER BY log
UNION
SELECT n FROM t1 WHERE log=3
ORDER BY log;
}} msg]
lappend v $msg
} {1 {ORDER BY clause should come after UNION not before}}
# Except operator
#
do_test select4-3.1 {
execsql {
SELECT DISTINCT log FROM t1
EXCEPT
SELECT n FROM t1 WHERE log=3
ORDER BY log;
}
} {0 1 2 3 4}
do_test select4-3.2 {
execsql {
SELECT log FROM t1 WHERE n IN
(SELECT DISTINCT log FROM t1 EXCEPT
SELECT n FROM t1 WHERE log=3)
ORDER BY log;
}
} {0 1 2 2}
do_test select4-3.3 {
set v [catch {execsql {
SELECT DISTINCT log FROM t1 ORDER BY log
EXCEPT
SELECT n FROM t1 WHERE log=3
ORDER BY log;
}} msg]
lappend v $msg
} {1 {ORDER BY clause should come after EXCEPT not before}}
# Intersect operator
#
do_test select4-4.1 {
execsql {
SELECT DISTINCT log FROM t1
INTERSECT
SELECT n FROM t1 WHERE log=3
ORDER BY log;
}
} {5}
do_test select4-4.2 {
execsql {
SELECT log FROM t1 WHERE n IN
(SELECT DISTINCT log FROM t1 INTERSECT
SELECT n FROM t1 WHERE log=3)
ORDER BY log;
}
} {3}
do_test select4-4.3 {
set v [catch {execsql {
SELECT DISTINCT log FROM t1 ORDER BY log
INTERSECT
SELECT n FROM t1 WHERE log=3
ORDER BY log;
}} msg]
lappend v $msg
} {1 {ORDER BY clause should come after INTERSECT not before}}
# Various error messages while processing UNION or INTERSECT
#
do_test select4-5.1 {
set v [catch {execsql {
SELECT DISTINCT log FROM t2
UNION ALL
SELECT n FROM t1 WHERE log=3
ORDER BY log;
}} msg]
lappend v $msg
} {1 {no such table: t2}}
do_test select4-5.2 {
set v [catch {execsql {
SELECT DISTINCT log AS "xyzzy" FROM t1
UNION ALL
SELECT n FROM t1 WHERE log=3
ORDER BY xyzzy;
}} msg]
lappend v $msg
} {0 {0 1 2 3 4 5 5 6 7 8}}
do_test select4-5.2b {
set v [catch {execsql {
SELECT DISTINCT log xyzzy FROM t1
UNION ALL
SELECT n FROM t1 WHERE log=3
ORDER BY 'xyzzy';
}} msg]
lappend v $msg
} {0 {0 1 2 3 4 5 5 6 7 8}}
do_test select4-5.2c {
set v [catch {execsql {
SELECT DISTINCT log FROM t1
UNION ALL
SELECT n FROM t1 WHERE log=3
ORDER BY 'xyzzy';
}} msg]
lappend v $msg
} {1 {ORDER BY term number 1 does not match any result column}}
do_test select4-5.2d {
set v [catch {execsql {
SELECT DISTINCT log FROM t1
INTERSECT
SELECT n FROM t1 WHERE log=3
ORDER BY 'xyzzy';
}} msg]
lappend v $msg
} {1 {ORDER BY term number 1 does not match any result column}}
do_test select4-5.2e {
set v [catch {execsql {
SELECT DISTINCT log FROM t1
UNION ALL
SELECT n FROM t1 WHERE log=3
ORDER BY n;
}} msg]
lappend v $msg
} {0 {0 1 2 3 4 5 5 6 7 8}}
do_test select4-5.3 {
set v [catch {execsql {
SELECT DISTINCT log, n FROM t1
UNION ALL
SELECT n FROM t1 WHERE log=3
ORDER BY log;
}} msg]
lappend v $msg
} {1 {SELECTs to the left and right of UNION ALL do not have the same number of result columns}}
do_test select4-5.4 {
set v [catch {execsql {
SELECT log FROM t1 WHERE n=2
UNION ALL
SELECT log FROM t1 WHERE n=3
UNION ALL
SELECT log FROM t1 WHERE n=4
UNION ALL
SELECT log FROM t1 WHERE n=5
ORDER BY log;
}} msg]
lappend v $msg
} {0 {1 2 2 3}}
do_test select4-6.1 {
execsql {
SELECT log, count(*) as cnt FROM t1 GROUP BY log
UNION
SELECT log, n FROM t1 WHERE n=7
ORDER BY cnt, log;
}
} {0 1 1 1 2 2 3 4 3 7 4 8 5 15}
do_test select4-6.2 {
execsql {
SELECT log, count(*) FROM t1 GROUP BY log
UNION
SELECT log, n FROM t1 WHERE n=7
ORDER BY count(*), log;
}
} {0 1 1 1 2 2 3 4 3 7 4 8 5 15}
finish_test