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1 # 2001 September 15 | |
2 # | |
3 # The author disclaims copyright to this source code. In place of | |
4 # a legal notice, here is a blessing: | |
5 # | |
6 # May you do good and not evil. | |
7 # May you find forgiveness for yourself and forgive others. | |
8 # May you share freely, never taking more than you give. | |
9 # | |
10 #*********************************************************************** | |
11 # This file implements regression tests for SQLite library. The | |
12 # focus of this file is testing aggregate functions and the | |
13 # GROUP BY and HAVING clauses of SELECT statements. | |
14 # | |
15 # $Id: select5.test,v 1.20 2008/08/21 14:15:59 drh Exp $ | |
16 | |
17 set testdir [file dirname $argv0] | |
18 source $testdir/tester.tcl | |
19 | |
20 # Build some test data | |
21 # | |
22 execsql { | |
23 CREATE TABLE t1(x int, y int); | |
24 BEGIN; | |
25 } | |
26 for {set i 1} {$i<32} {incr i} { | |
27 for {set j 0} {(1<<$j)<$i} {incr j} {} | |
28 execsql "INSERT INTO t1 VALUES([expr {32-$i}],[expr {10-$j}])" | |
29 } | |
30 execsql { | |
31 COMMIT | |
32 } | |
33 | |
34 do_test select5-1.0 { | |
35 execsql {SELECT DISTINCT y FROM t1 ORDER BY y} | |
36 } {5 6 7 8 9 10} | |
37 | |
38 # Sort by an aggregate function. | |
39 # | |
40 do_test select5-1.1 { | |
41 execsql {SELECT y, count(*) FROM t1 GROUP BY y ORDER BY y} | |
42 } {5 15 6 8 7 4 8 2 9 1 10 1} | |
43 do_test select5-1.2 { | |
44 execsql {SELECT y, count(*) FROM t1 GROUP BY y ORDER BY count(*), y} | |
45 } {9 1 10 1 8 2 7 4 6 8 5 15} | |
46 do_test select5-1.3 { | |
47 execsql {SELECT count(*), y FROM t1 GROUP BY y ORDER BY count(*), y} | |
48 } {1 9 1 10 2 8 4 7 8 6 15 5} | |
49 | |
50 # Some error messages associated with aggregates and GROUP BY | |
51 # | |
52 do_test select5-2.1.1 { | |
53 catchsql { | |
54 SELECT y, count(*) FROM t1 GROUP BY z ORDER BY y | |
55 } | |
56 } {1 {no such column: z}} | |
57 do_test select5-2.1.2 { | |
58 catchsql { | |
59 SELECT y, count(*) FROM t1 GROUP BY temp.t1.y ORDER BY y | |
60 } | |
61 } {1 {no such column: temp.t1.y}} | |
62 do_test select5-2.2 { | |
63 set v [catch {execsql { | |
64 SELECT y, count(*) FROM t1 GROUP BY z(y) ORDER BY y | |
65 }} msg] | |
66 lappend v $msg | |
67 } {1 {no such function: z}} | |
68 do_test select5-2.3 { | |
69 set v [catch {execsql { | |
70 SELECT y, count(*) FROM t1 GROUP BY y HAVING count(*)<3 ORDER BY y | |
71 }} msg] | |
72 lappend v $msg | |
73 } {0 {8 2 9 1 10 1}} | |
74 do_test select5-2.4 { | |
75 set v [catch {execsql { | |
76 SELECT y, count(*) FROM t1 GROUP BY y HAVING z(y)<3 ORDER BY y | |
77 }} msg] | |
78 lappend v $msg | |
79 } {1 {no such function: z}} | |
80 do_test select5-2.5 { | |
81 set v [catch {execsql { | |
82 SELECT y, count(*) FROM t1 GROUP BY y HAVING count(*)<z ORDER BY y | |
83 }} msg] | |
84 lappend v $msg | |
85 } {1 {no such column: z}} | |
86 | |
87 # Get the Agg function to rehash in vdbe.c | |
88 # | |
89 do_test select5-3.1 { | |
90 execsql { | |
91 SELECT x, count(*), avg(y) FROM t1 GROUP BY x HAVING x<4 ORDER BY x | |
92 } | |
93 } {1 1 5.0 2 1 5.0 3 1 5.0} | |
94 | |
95 # Run various aggregate functions when the count is zero. | |
96 # | |
97 do_test select5-4.1 { | |
98 execsql { | |
99 SELECT avg(x) FROM t1 WHERE x>100 | |
100 } | |
101 } {{}} | |
102 do_test select5-4.2 { | |
103 execsql { | |
104 SELECT count(x) FROM t1 WHERE x>100 | |
105 } | |
106 } {0} | |
107 do_test select5-4.3 { | |
108 execsql { | |
109 SELECT min(x) FROM t1 WHERE x>100 | |
110 } | |
111 } {{}} | |
112 do_test select5-4.4 { | |
113 execsql { | |
114 SELECT max(x) FROM t1 WHERE x>100 | |
115 } | |
116 } {{}} | |
117 do_test select5-4.5 { | |
118 execsql { | |
119 SELECT sum(x) FROM t1 WHERE x>100 | |
120 } | |
121 } {{}} | |
122 | |
123 # Some tests for queries with a GROUP BY clause but no aggregate functions. | |
124 # | |
125 # Note: The query in test cases 5.1 through 5.5 are not legal SQL. So if the | |
126 # implementation changes in the future and it returns different results, | |
127 # this is not such a big deal. | |
128 # | |
129 do_test select5-5.1 { | |
130 execsql { | |
131 CREATE TABLE t2(a, b, c); | |
132 INSERT INTO t2 VALUES(1, 2, 3); | |
133 INSERT INTO t2 VALUES(1, 4, 5); | |
134 INSERT INTO t2 VALUES(6, 4, 7); | |
135 CREATE INDEX t2_idx ON t2(a); | |
136 } | |
137 } {} | |
138 do_test select5-5.2 { | |
139 execsql { | |
140 SELECT a FROM t2 GROUP BY a; | |
141 } | |
142 } {1 6} | |
143 do_test select5-5.3 { | |
144 execsql { | |
145 SELECT a FROM t2 WHERE a>2 GROUP BY a; | |
146 } | |
147 } {6} | |
148 do_test select5-5.4 { | |
149 execsql { | |
150 SELECT a, b FROM t2 GROUP BY a, b; | |
151 } | |
152 } {1 2 1 4 6 4} | |
153 do_test select5-5.5 { | |
154 execsql { | |
155 SELECT a, b FROM t2 GROUP BY a; | |
156 } | |
157 } {1 4 6 4} | |
158 | |
159 # Test rendering of columns for the GROUP BY clause. | |
160 # | |
161 do_test select5-5.11 { | |
162 execsql { | |
163 SELECT max(c), b*a, b, a FROM t2 GROUP BY b*a, b, a | |
164 } | |
165 } {3 2 2 1 5 4 4 1 7 24 4 6} | |
166 | |
167 # NULL compare equal to each other for the purposes of processing | |
168 # the GROUP BY clause. | |
169 # | |
170 do_test select5-6.1 { | |
171 execsql { | |
172 CREATE TABLE t3(x,y); | |
173 INSERT INTO t3 VALUES(1,NULL); | |
174 INSERT INTO t3 VALUES(2,NULL); | |
175 INSERT INTO t3 VALUES(3,4); | |
176 SELECT count(x), y FROM t3 GROUP BY y ORDER BY 1 | |
177 } | |
178 } {1 4 2 {}} | |
179 do_test select5-6.2 { | |
180 execsql { | |
181 CREATE TABLE t4(x,y,z); | |
182 INSERT INTO t4 VALUES(1,2,NULL); | |
183 INSERT INTO t4 VALUES(2,3,NULL); | |
184 INSERT INTO t4 VALUES(3,NULL,5); | |
185 INSERT INTO t4 VALUES(4,NULL,6); | |
186 INSERT INTO t4 VALUES(4,NULL,6); | |
187 INSERT INTO t4 VALUES(5,NULL,NULL); | |
188 INSERT INTO t4 VALUES(5,NULL,NULL); | |
189 INSERT INTO t4 VALUES(6,7,8); | |
190 SELECT max(x), count(x), y, z FROM t4 GROUP BY y, z ORDER BY 1 | |
191 } | |
192 } {1 1 2 {} 2 1 3 {} 3 1 {} 5 4 2 {} 6 5 2 {} {} 6 1 7 8} | |
193 | |
194 do_test select5-7.2 { | |
195 execsql { | |
196 SELECT count(*), count(x) as cnt FROM t4 GROUP BY y ORDER BY cnt; | |
197 } | |
198 } {1 1 1 1 1 1 5 5} | |
199 | |
200 # See ticket #3324. | |
201 # | |
202 do_test select5-8.1 { | |
203 execsql { | |
204 CREATE TABLE t8a(a,b); | |
205 CREATE TABLE t8b(x); | |
206 INSERT INTO t8a VALUES('one', 1); | |
207 INSERT INTO t8a VALUES('one', 2); | |
208 INSERT INTO t8a VALUES('two', 3); | |
209 INSERT INTO t8a VALUES('one', NULL); | |
210 INSERT INTO t8b(rowid,x) VALUES(1,111); | |
211 INSERT INTO t8b(rowid,x) VALUES(2,222); | |
212 INSERT INTO t8b(rowid,x) VALUES(3,333); | |
213 SELECT a, count(b) FROM t8a, t8b WHERE b=t8b.rowid GROUP BY a ORDER BY a; | |
214 } | |
215 } {one 2 two 1} | |
216 do_test select5-8.2 { | |
217 execsql { | |
218 SELECT a, count(b) FROM t8a, t8b WHERE b=+t8b.rowid GROUP BY a ORDER BY a; | |
219 } | |
220 } {one 2 two 1} | |
221 do_test select5-8.3 { | |
222 execsql { | |
223 SELECT t8a.a, count(t8a.b) FROM t8a, t8b WHERE t8a.b=t8b.rowid | |
224 GROUP BY 1 ORDER BY 1; | |
225 } | |
226 } {one 2 two 1} | |
227 do_test select5-8.4 { | |
228 execsql { | |
229 SELECT a, count(*) FROM t8a, t8b WHERE b=+t8b.rowid GROUP BY a ORDER BY a; | |
230 } | |
231 } {one 2 two 1} | |
232 do_test select5-8.5 { | |
233 execsql { | |
234 SELECT a, count(b) FROM t8a, t8b WHERE b<x GROUP BY a ORDER BY a; | |
235 } | |
236 } {one 6 two 3} | |
237 do_test select5-8.6 { | |
238 execsql { | |
239 SELECT a, count(t8a.b) FROM t8a, t8b WHERE b=t8b.rowid | |
240 GROUP BY a ORDER BY 2; | |
241 } | |
242 } {two 1 one 2} | |
243 do_test select5-8.7 { | |
244 execsql { | |
245 SELECT a, count(b) FROM t8a, t8b GROUP BY a ORDER BY 2; | |
246 } | |
247 } {two 3 one 6} | |
248 do_test select5-8.8 { | |
249 execsql { | |
250 SELECT a, count(*) FROM t8a, t8b GROUP BY a ORDER BY 2; | |
251 } | |
252 } {two 3 one 9} | |
253 | |
254 | |
255 | |
256 | |
257 finish_test | |
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