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1 # 2012 February 02 | |
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 # | |
12 # Test for queries of the form: | |
13 # | |
14 # SELECT p, max(q) FROM t1; | |
15 # | |
16 # Demonstration that the value returned for p is on the same row as | |
17 # the maximum q. | |
18 # | |
19 | |
20 set testdir [file dirname $argv0] | |
21 source $testdir/tester.tcl | |
22 | |
23 ifcapable !compound { | |
24 finish_test | |
25 return | |
26 } | |
27 | |
28 do_test minmax4-1.1 { | |
29 db eval { | |
30 CREATE TABLE t1(p,q); | |
31 SELECT p, max(q) FROM t1; | |
32 } | |
33 } {{} {}} | |
34 do_test minmax4-1.2 { | |
35 db eval { | |
36 SELECT p, min(q) FROM t1; | |
37 } | |
38 } {{} {}} | |
39 do_test minmax4-1.3 { | |
40 db eval { | |
41 INSERT INTO t1 VALUES(1,2); | |
42 SELECT p, max(q) FROM t1; | |
43 } | |
44 } {1 2} | |
45 do_test minmax4-1.4 { | |
46 db eval { | |
47 SELECT p, min(q) FROM t1; | |
48 } | |
49 } {1 2} | |
50 do_test minmax4-1.5 { | |
51 db eval { | |
52 INSERT INTO t1 VALUES(3,4); | |
53 SELECT p, max(q) FROM t1; | |
54 } | |
55 } {3 4} | |
56 do_test minmax4-1.6 { | |
57 db eval { | |
58 SELECT p, min(q) FROM t1; | |
59 SELECT p FROM (SELECT p, min(q) FROM t1); | |
60 } | |
61 } {1 2 1} | |
62 do_test minmax4-1.7 { | |
63 db eval { | |
64 INSERT INTO t1 VALUES(5,0); | |
65 SELECT p, max(q) FROM t1; | |
66 SELECT p FROM (SELECT max(q), p FROM t1); | |
67 } | |
68 } {3 4 3} | |
69 do_test minmax4-1.8 { | |
70 db eval { | |
71 SELECT p, min(q) FROM t1; | |
72 } | |
73 } {5 0} | |
74 do_test minmax4-1.9 { | |
75 db eval { | |
76 INSERT INTO t1 VALUES(6,1); | |
77 SELECT p, max(q) FROM t1; | |
78 SELECT p FROM (SELECT max(q), p FROM t1); | |
79 } | |
80 } {3 4 3} | |
81 do_test minmax4-1.10 { | |
82 db eval { | |
83 SELECT p, min(q) FROM t1; | |
84 } | |
85 } {5 0} | |
86 do_test minmax4-1.11 { | |
87 db eval { | |
88 INSERT INTO t1 VALUES(7,NULL); | |
89 SELECT p, max(q) FROM t1; | |
90 } | |
91 } {3 4} | |
92 do_test minmax4-1.12 { | |
93 db eval { | |
94 SELECT p, min(q) FROM t1; | |
95 } | |
96 } {5 0} | |
97 do_test minmax4-1.13 { | |
98 db eval { | |
99 DELETE FROM t1 WHERE q IS NOT NULL; | |
100 SELECT p, max(q) FROM t1; | |
101 } | |
102 } {7 {}} | |
103 do_test minmax4-1.14 { | |
104 db eval { | |
105 SELECT p, min(q) FROM t1; | |
106 } | |
107 } {7 {}} | |
108 | |
109 do_test minmax4-2.1 { | |
110 db eval { | |
111 CREATE TABLE t2(a,b,c); | |
112 INSERT INTO t2 VALUES | |
113 (1,null,2), | |
114 (1,2,3), | |
115 (1,1,4), | |
116 (2,3,5); | |
117 SELECT a, max(b), c FROM t2 GROUP BY a ORDER BY a; | |
118 } | |
119 } {1 2 3 2 3 5} | |
120 do_test minmax4-2.2 { | |
121 db eval { | |
122 SELECT a, min(b), c FROM t2 GROUP BY a ORDER BY a; | |
123 } | |
124 } {1 1 4 2 3 5} | |
125 do_test minmax4-2.3 { | |
126 db eval { | |
127 SELECT a, min(b), avg(b), count(b), c FROM t2 GROUP BY a ORDER BY a DESC; | |
128 } | |
129 } {2 3 3.0 1 5 1 1 1.5 2 4} | |
130 do_test minmax4-2.4 { | |
131 db eval { | |
132 SELECT a, min(b), max(b), c FROM t2 GROUP BY a ORDER BY a; | |
133 } | |
134 } {1 1 2 3 2 3 3 5} | |
135 do_test minmax4-2.5 { | |
136 db eval { | |
137 SELECT a, max(b), min(b), c FROM t2 GROUP BY a ORDER BY a; | |
138 } | |
139 } {1 2 1 4 2 3 3 5} | |
140 do_test minmax4-2.6 { | |
141 db eval { | |
142 SELECT a, max(b), b, max(c), c FROM t2 GROUP BY a ORDER BY a; | |
143 } | |
144 } {1 2 1 4 4 2 3 3 5 5} | |
145 do_test minmax4-2.7 { | |
146 db eval { | |
147 SELECT a, min(b), b, min(c), c FROM t2 GROUP BY a ORDER BY a; | |
148 } | |
149 } {1 1 {} 2 2 2 3 3 5 5} | |
150 | |
151 | |
152 | |
153 finish_test | |
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