115 lines
3.3 KiB
Plaintext
115 lines
3.3 KiB
Plaintext
# Copyright (c) 1999, 2000 D. Richard Hipp
|
|
#
|
|
# This program is free software; you can redistribute it and/or
|
|
# modify it under the terms of the GNU General Public
|
|
# License as published by the Free Software Foundation; either
|
|
# version 2 of the License, or (at your option) any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
# General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public
|
|
# License along with this library; if not, write to the
|
|
# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
# Boston, MA 02111-1307, USA.
|
|
#
|
|
# Author contact information:
|
|
# drh@hwaci.com
|
|
# http://www.hwaci.com/drh/
|
|
#
|
|
#***********************************************************************
|
|
# This file implements regression tests for SQLite library. The
|
|
# focus of this file is testing aggregate functions and the
|
|
# GROUP BY and HAVING clauses of SELECT statements.
|
|
#
|
|
# $Id: select3.test,v 1.1 2000/06/06 18:00:16 drh Exp $
|
|
|
|
set testdir [file dirname $argv0]
|
|
source $testdir/tester.tcl
|
|
|
|
# Build some test data
|
|
#
|
|
do_test select3-1.0 {
|
|
set fd [open data1.txt w]
|
|
for {set i 1} {$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
|
|
execsql {SELECT DISTINCT log FROM t1 ORDER BY log}
|
|
} {0 1 2 3 4 5}
|
|
|
|
# Basic aggregate functions.
|
|
#
|
|
do_test select3-1.1 {
|
|
execsql {SELECT count(*) FROM t1}
|
|
} {31}
|
|
do_test select3-1.2 {
|
|
execsql {
|
|
SELECT min(n),min(log),max(n),max(log),sum(n),sum(log),avg(n),avg(log)
|
|
FROM t1
|
|
}
|
|
} {1 0 31 5 496 124 16 4}
|
|
do_test select3-1.3 {
|
|
execsql {SELECT max(n)/avg(n), max(log)/avg(log) FROM t1}
|
|
} {1.9375 1.25}
|
|
|
|
# Try some basic GROUP BY clauses
|
|
#
|
|
do_test select3-2.1 {
|
|
execsql {SELECT log, count(*) FROM t1 GROUP BY log ORDER BY log}
|
|
} {0 1 1 1 2 2 3 4 4 8 5 15}
|
|
do_test select3-2.2 {
|
|
execsql {SELECT log, min(n) FROM t1 GROUP BY log ORDER BY log}
|
|
} {0 1 1 2 2 3 3 5 4 9 5 17}
|
|
do_test select3-2.3 {
|
|
execsql {SELECT log, avg(n) FROM t1 GROUP BY log ORDER BY log}
|
|
} {0 1 1 2 2 3.5 3 6.5 4 12.5 5 24}
|
|
do_test select3-2.3 {
|
|
execsql {SELECT log, avg(n)+1 FROM t1 GROUP BY log ORDER BY log}
|
|
} {0 2 1 3 2 4.5 3 7.5 4 13.5 5 25}
|
|
do_test select3-2.4 {
|
|
execsql {SELECT log, avg(n)-min(n) FROM t1 GROUP BY log ORDER BY log}
|
|
} {0 0 1 0 2 0.5 3 1.5 4 3.5 5 7}
|
|
do_test select3-2.5 {
|
|
execsql {SELECT log*2+1, avg(n)-min(n) FROM t1 GROUP BY log ORDER BY log}
|
|
} {1 0 3 0 5 0.5 7 1.5 9 3.5 11 7}
|
|
|
|
# Cannot have a HAVING without a GROUP BY
|
|
#
|
|
do_test select3-3.1 {
|
|
set v [catch {execsql {SELECT log, count(*) FROM t1 HAVING log>=4}} msg]
|
|
lappend v $msg
|
|
} {1 {a GROUP BY clause is required before HAVING}}
|
|
|
|
# Toss in some HAVING clauses
|
|
#
|
|
do_test select3-4.1 {
|
|
execsql {SELECT log, count(*) FROM t1 GROUP BY log HAVING log>=4 ORDER BY log}
|
|
} {4 8 5 15}
|
|
do_test select3-4.2 {
|
|
execsql {
|
|
SELECT log, count(*) FROM t1
|
|
GROUP BY log
|
|
HAVING count(*)>=4
|
|
ORDER BY log
|
|
}
|
|
} {3 4 4 8 5 15}
|
|
do_test select3-4.3 {
|
|
execsql {
|
|
SELECT log, count(*) FROM t1
|
|
GROUP BY log
|
|
HAVING count(*)>=4
|
|
ORDER BY max(n)
|
|
}
|
|
} {3 4 4 8 5 15}
|
|
|
|
finish_test
|