xref: /sqlite-3.40.0/test/select5.test (revision c837e709) 
1# Copyright (c) 1999, 2000 D. Richard Hipp
2#
3# This program is free software; you can redistribute it and/or
4# modify it under the terms of the GNU General Public
5# License as published by the Free Software Foundation; either
6# version 2 of the License, or (at your option) any later version.
7#
8# This program is distributed in the hope that it will be useful,
9# but WITHOUT ANY WARRANTY; without even the implied warranty of
10# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
11# General Public License for more details.
12#
13# You should have received a copy of the GNU General Public
14# License along with this library; if not, write to the
15# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
16# Boston, MA  02111-1307, USA.
17#
18# Author contact information:
19#   [email protected]
20#   http://www.hwaci.com/drh/
21#
22#***********************************************************************
23# This file implements regression tests for SQLite library.  The
24# focus of this file is testing aggregate functions and the
25# GROUP BY and HAVING clauses of SELECT statements.
26#
27# $Id: select5.test,v 1.3 2000/06/08 16:26:25 drh Exp $
28
29set testdir [file dirname $argv0]
30source $testdir/tester.tcl
31
32# Build some test data
33#
34set fd [open data1.txt w]
35for {set i 1} {$i<32} {incr i} {
36  for {set j 0} {pow(2,$j)<$i} {incr j} {}
37  puts $fd "[expr {32-$i}]\t[expr {10-$j}]"
38}
39close $fd
40execsql {
41  CREATE TABLE t1(x int, y int);
42  COPY t1 FROM 'data1.txt'
43}
44file delete data1.txt
45
46do_test select5-1.0 {
47  execsql {SELECT DISTINCT y FROM t1 ORDER BY y}
48} {5 6 7 8 9 10}
49
50# Sort by an aggregate function.
51#
52do_test select5-1.1 {
53  execsql {SELECT y, count(*) FROM t1 GROUP BY y ORDER BY y}
54} {5 15 6 8 7 4 8 2 9 1 10 1}
55do_test select5-1.2 {
56  execsql {SELECT y, count(*) FROM t1 GROUP BY y ORDER BY count(*), y}
57} {9 1 10 1 8 2 7 4 6 8 5 15}
58do_test select5-1.3 {
59  execsql {SELECT count(*), y FROM t1 GROUP BY y ORDER BY count(*), y}
60} {1 9 1 10 2 8 4 7 8 6 15 5}
61
62# Some error messages associated with aggregates and GROUP BY
63#
64do_test select5-2.1 {
65  set v [catch {execsql {
66    SELECT y, count(*) FROM t1 GROUP BY z ORDER BY y
67  }} msg]
68  lappend v $msg
69} {1 {no such field: z}}
70do_test select5-2.2 {
71  set v [catch {execsql {
72    SELECT y, count(*) FROM t1 GROUP BY z(y) ORDER BY y
73  }} msg]
74  lappend v $msg
75} {1 {no such function: z}}
76do_test select5-2.3 {
77  set v [catch {execsql {
78    SELECT y, count(*) FROM t1 GROUP BY y HAVING count(*)<3 ORDER BY y
79  }} msg]
80  lappend v $msg
81} {0 {8 2 9 1 10 1}}
82do_test select5-2.4 {
83  set v [catch {execsql {
84    SELECT y, count(*) FROM t1 GROUP BY y HAVING z(y)<3 ORDER BY y
85  }} msg]
86  lappend v $msg
87} {1 {no such function: z}}
88do_test select5-2.5 {
89  set v [catch {execsql {
90    SELECT y, count(*) FROM t1 GROUP BY y HAVING count(*)<z ORDER BY y
91  }} msg]
92  lappend v $msg
93} {1 {no such field: z}}
94
95# Get the Agg function to rehash in vdbe.c
96#
97do_test select5-3.1 {
98  execsql {
99    SELECT x, count(*), avg(y) FROM t1 GROUP BY x HAVING x<4 ORDER BY x
100  }
101} {1 1 5 2 1 5 3 1 5}
102
103# Run the AVG() function when the count is zero.
104#
105do_test select5-4.1 {
106  execsql {
107    SELECT avg(x) FROM t1 WHERE x>100
108  }
109} {}
110
111finish_test
112