# 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: select5.test,v 1.4 2000/06/21 13:59:13 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 $fd "[expr {32-$i}]\t[expr {10-$j}]"
}
close $fd
execsql {
CREATE TABLE t1(x int, y int);
COPY t1 FROM 'data1.txt'
}
file delete data1.txt
do_test select5-1.0 {
execsql {SELECT DISTINCT y FROM t1 ORDER BY y}
} {5 6 7 8 9 10}
# Sort by an aggregate function.
#
do_test select5-1.1 {
execsql {SELECT y, count(*) FROM t1 GROUP BY y ORDER BY y}
} {5 15 6 8 7 4 8 2 9 1 10 1}
do_test select5-1.2 {
execsql {SELECT y, count(*) FROM t1 GROUP BY y ORDER BY count(*), y}
} {9 1 10 1 8 2 7 4 6 8 5 15}
do_test select5-1.3 {
execsql {SELECT count(*), y FROM t1 GROUP BY y ORDER BY count(*), y}
} {1 9 1 10 2 8 4 7 8 6 15 5}
# Some error messages associated with aggregates and GROUP BY
#
do_test select5-2.1 {
set v [catch {execsql {
SELECT y, count(*) FROM t1 GROUP BY z ORDER BY y
}} msg]
lappend v $msg
} {1 {no such column: z}}
do_test select5-2.2 {
set v [catch {execsql {
SELECT y, count(*) FROM t1 GROUP BY z(y) ORDER BY y
}} msg]
lappend v $msg
} {1 {no such function: z}}
do_test select5-2.3 {
set v [catch {execsql {
SELECT y, count(*) FROM t1 GROUP BY y HAVING count(*)<3 ORDER BY y
}} msg]
lappend v $msg
} {0 {8 2 9 1 10 1}}
do_test select5-2.4 {
set v [catch {execsql {
SELECT y, count(*) FROM t1 GROUP BY y HAVING z(y)<3 ORDER BY y
}} msg]
lappend v $msg
} {1 {no such function: z}}
do_test select5-2.5 {
set v [catch {execsql {
SELECT y, count(*) FROM t1 GROUP BY y HAVING count(*)<z ORDER BY y
}} msg]
lappend v $msg
} {1 {no such column: z}}
# Get the Agg function to rehash in vdbe.c
#
do_test select5-3.1 {
execsql {
SELECT x, count(*), avg(y) FROM t1 GROUP BY x HAVING x<4 ORDER BY x
}
} {1 1 5 2 1 5 3 1 5}
# Run the AVG() function when the count is zero.
#
do_test select5-4.1 {
execsql {
SELECT avg(x) FROM t1 WHERE x>100
}
} {}
finish_test