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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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