wasCSharpSQLite – Blame information for rev 1

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1 office 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 SELECT statements that contain
13 # aggregate min() and max() functions and which are handled as
14 # as a special case.
15 #
16 # $Id: minmax.test,v 1.21 2008/07/08 18:05:26 drh Exp $
17  
18 set testdir [file dirname $argv0]
19 source $testdir/tester.tcl
20  
21 do_test minmax-1.0 {
22 execsql {
23 BEGIN;
24 CREATE TABLE t1(x, y);
25 INSERT INTO t1 VALUES(1,1);
26 INSERT INTO t1 VALUES(2,2);
27 INSERT INTO t1 VALUES(3,2);
28 INSERT INTO t1 VALUES(4,3);
29 INSERT INTO t1 VALUES(5,3);
30 INSERT INTO t1 VALUES(6,3);
31 INSERT INTO t1 VALUES(7,3);
32 INSERT INTO t1 VALUES(8,4);
33 INSERT INTO t1 VALUES(9,4);
34 INSERT INTO t1 VALUES(10,4);
35 INSERT INTO t1 VALUES(11,4);
36 INSERT INTO t1 VALUES(12,4);
37 INSERT INTO t1 VALUES(13,4);
38 INSERT INTO t1 VALUES(14,4);
39 INSERT INTO t1 VALUES(15,4);
40 INSERT INTO t1 VALUES(16,5);
41 INSERT INTO t1 VALUES(17,5);
42 INSERT INTO t1 VALUES(18,5);
43 INSERT INTO t1 VALUES(19,5);
44 INSERT INTO t1 VALUES(20,5);
45 COMMIT;
46 SELECT DISTINCT y FROM t1 ORDER BY y;
47 }
48 } {1 2 3 4 5}
49  
50 do_test minmax-1.1 {
51 set sqlite_search_count 0
52 execsql {SELECT min(x) FROM t1}
53 } {1}
54 do_test minmax-1.2 {
55 set sqlite_search_count
56 } {19}
57 do_test minmax-1.3 {
58 set sqlite_search_count 0
59 execsql {SELECT max(x) FROM t1}
60 } {20}
61 do_test minmax-1.4 {
62 set sqlite_search_count
63 } {19}
64 do_test minmax-1.5 {
65 execsql {CREATE INDEX t1i1 ON t1(x)}
66 set sqlite_search_count 0
67 execsql {SELECT min(x) FROM t1}
68 } {1}
69 do_test minmax-1.6 {
70 set sqlite_search_count
71 } {1}
72 do_test minmax-1.7 {
73 set sqlite_search_count 0
74 execsql {SELECT max(x) FROM t1}
75 } {20}
76 do_test minmax-1.8 {
77 set sqlite_search_count
78 } {0}
79 do_test minmax-1.9 {
80 set sqlite_search_count 0
81 execsql {SELECT max(y) FROM t1}
82 } {5}
83 do_test minmax-1.10 {
84 set sqlite_search_count
85 } {19}
86  
87 do_test minmax-1.21 {
88 execsql {SELECT min(x) FROM t1 WHERE x=5}
89 } {5}
90 do_test minmax-1.22 {
91 execsql {SELECT min(x) FROM t1 WHERE x>=5}
92 } {5}
93 do_test minmax-1.23 {
94 execsql {SELECT min(x) FROM t1 WHERE x>=4.5}
95 } {5}
96 do_test minmax-1.24 {
97 execsql {SELECT min(x) FROM t1 WHERE x<4.5}
98 } {1}
99  
100 do_test minmax-2.0 {
101 execsql {
102 CREATE TABLE t2(a INTEGER PRIMARY KEY, b);
103 INSERT INTO t2 SELECT * FROM t1;
104 }
105 set sqlite_search_count 0
106 execsql {SELECT min(a) FROM t2}
107 } {1}
108 do_test minmax-2.1 {
109 set sqlite_search_count
110 } {0}
111 do_test minmax-2.2 {
112 set sqlite_search_count 0
113 execsql {SELECT max(a) FROM t2}
114 } {20}
115 do_test minmax-2.3 {
116 set sqlite_search_count
117 } {0}
118  
119 do_test minmax-3.0 {
120 ifcapable subquery {
121 execsql {INSERT INTO t2 VALUES((SELECT max(a) FROM t2)+1,999)}
122 } else {
123 db function max_a_t2 {execsql {SELECT max(a) FROM t2}}
124 execsql {INSERT INTO t2 VALUES(max_a_t2()+1,999)}
125 }
126 set sqlite_search_count 0
127 execsql {SELECT max(a) FROM t2}
128 } {21}
129 do_test minmax-3.1 {
130 set sqlite_search_count
131 } {0}
132 do_test minmax-3.2 {
133 ifcapable subquery {
134 execsql {INSERT INTO t2 VALUES((SELECT max(a) FROM t2)+1,999)}
135 } else {
136 db function max_a_t2 {execsql {SELECT max(a) FROM t2}}
137 execsql {INSERT INTO t2 VALUES(max_a_t2()+1,999)}
138 }
139 set sqlite_search_count 0
140 ifcapable subquery {
141 execsql { SELECT b FROM t2 WHERE a=(SELECT max(a) FROM t2) }
142 } else {
143 execsql { SELECT b FROM t2 WHERE a=max_a_t2() }
144 }
145 } {999}
146 do_test minmax-3.3 {
147 set sqlite_search_count
148 } {0}
149  
150 ifcapable {compound && subquery} {
151 do_test minmax-4.1 {
152 execsql {
153 SELECT coalesce(min(x+0),-1), coalesce(max(x+0),-1) FROM
154 (SELECT * FROM t1 UNION SELECT NULL as 'x', NULL as 'y')
155 }
156 } {1 20}
157 do_test minmax-4.2 {
158 execsql {
159 SELECT y, coalesce(sum(x),0) FROM
160 (SELECT null AS x, y+1 AS y FROM t1 UNION SELECT * FROM t1)
161 GROUP BY y ORDER BY y;
162 }
163 } {1 1 2 5 3 22 4 92 5 90 6 0}
164 do_test minmax-4.3 {
165 execsql {
166 SELECT y, count(x), count(*) FROM
167 (SELECT null AS x, y+1 AS y FROM t1 UNION SELECT * FROM t1)
168 GROUP BY y ORDER BY y;
169 }
170 } {1 1 1 2 2 3 3 4 5 4 8 9 5 5 6 6 0 1}
171 } ;# ifcapable compound
172  
173 # Make sure the min(x) and max(x) optimizations work on empty tables
174 # including empty tables with indices. Ticket #296.
175 #
176 do_test minmax-5.1 {
177 execsql {
178 CREATE TABLE t3(x INTEGER UNIQUE NOT NULL);
179 SELECT coalesce(min(x),999) FROM t3;
180 }
181 } {999}
182 do_test minmax-5.2 {
183 execsql {
184 SELECT coalesce(min(rowid),999) FROM t3;
185 }
186 } {999}
187 do_test minmax-5.3 {
188 execsql {
189 SELECT coalesce(max(x),999) FROM t3;
190 }
191 } {999}
192 do_test minmax-5.4 {
193 execsql {
194 SELECT coalesce(max(rowid),999) FROM t3;
195 }
196 } {999}
197 do_test minmax-5.5 {
198 execsql {
199 SELECT coalesce(max(rowid),999) FROM t3 WHERE rowid<25;
200 }
201 } {999}
202  
203 # Make sure the min(x) and max(x) optimizations work when there
204 # is a LIMIT clause. Ticket #396.
205 #
206 do_test minmax-6.1 {
207 execsql {
208 SELECT min(a) FROM t2 LIMIT 1
209 }
210 } {1}
211 do_test minmax-6.2 {
212 execsql {
213 SELECT max(a) FROM t2 LIMIT 3
214 }
215 } {22}
216 do_test minmax-6.3 {
217 execsql {
218 SELECT min(a) FROM t2 LIMIT 0,100
219 }
220 } {1}
221 do_test minmax-6.4 {
222 execsql {
223 SELECT max(a) FROM t2 LIMIT 1,100
224 }
225 } {}
226 do_test minmax-6.5 {
227 execsql {
228 SELECT min(x) FROM t3 LIMIT 1
229 }
230 } {{}}
231 do_test minmax-6.6 {
232 execsql {
233 SELECT max(x) FROM t3 LIMIT 0
234 }
235 } {}
236 do_test minmax-6.7 {
237 execsql {
238 SELECT max(a) FROM t2 LIMIT 0
239 }
240 } {}
241  
242 # Make sure the max(x) and min(x) optimizations work for nested
243 # queries. Ticket #587.
244 #
245 do_test minmax-7.1 {
246 execsql {
247 SELECT max(x) FROM t1;
248 }
249 } 20
250 ifcapable subquery {
251 do_test minmax-7.2 {
252 execsql {
253 SELECT * FROM (SELECT max(x) FROM t1);
254 }
255 } 20
256 }
257 do_test minmax-7.3 {
258 execsql {
259 SELECT min(x) FROM t1;
260 }
261 } 1
262 ifcapable subquery {
263 do_test minmax-7.4 {
264 execsql {
265 SELECT * FROM (SELECT min(x) FROM t1);
266 }
267 } 1
268 }
269  
270 # Make sure min(x) and max(x) work correctly when the datatype is
271 # TEXT instead of NUMERIC. Ticket #623.
272 #
273 do_test minmax-8.1 {
274 execsql {
275 CREATE TABLE t4(a TEXT);
276 INSERT INTO t4 VALUES('1234');
277 INSERT INTO t4 VALUES('234');
278 INSERT INTO t4 VALUES('34');
279 SELECT min(a), max(a) FROM t4;
280 }
281 } {1234 34}
282 do_test minmax-8.2 {
283 execsql {
284 CREATE TABLE t5(a INTEGER);
285 INSERT INTO t5 VALUES('1234');
286 INSERT INTO t5 VALUES('234');
287 INSERT INTO t5 VALUES('34');
288 SELECT min(a), max(a) FROM t5;
289 }
290 } {34 1234}
291  
292 # Ticket #658: Test the min()/max() optimization when the FROM clause
293 # is a subquery.
294 #
295 ifcapable {compound && subquery} {
296 do_test minmax-9.1 {
297 execsql {
298 SELECT max(rowid) FROM (
299 SELECT max(rowid) FROM t4 UNION SELECT max(rowid) FROM t5
300 )
301 }
302 } {1}
303 do_test minmax-9.2 {
304 execsql {
305 SELECT max(rowid) FROM (
306 SELECT max(rowid) FROM t4 EXCEPT SELECT max(rowid) FROM t5
307 )
308 }
309 } {{}}
310 } ;# ifcapable compound&&subquery
311  
312 # If there is a NULL in an aggregate max() or min(), ignore it. An
313 # aggregate min() or max() will only return NULL if all values are NULL.
314 #
315 do_test minmax-10.1 {
316 execsql {
317 CREATE TABLE t6(x);
318 INSERT INTO t6 VALUES(1);
319 INSERT INTO t6 VALUES(2);
320 INSERT INTO t6 VALUES(NULL);
321 SELECT coalesce(min(x),-1) FROM t6;
322 }
323 } {1}
324 do_test minmax-10.2 {
325 execsql {
326 SELECT max(x) FROM t6;
327 }
328 } {2}
329 do_test minmax-10.3 {
330 execsql {
331 CREATE INDEX i6 ON t6(x);
332 SELECT coalesce(min(x),-1) FROM t6;
333 }
334 } {1}
335 do_test minmax-10.4 {
336 execsql {
337 SELECT max(x) FROM t6;
338 }
339 } {2}
340 do_test minmax-10.5 {
341 execsql {
342 DELETE FROM t6 WHERE x NOT NULL;
343 SELECT count(*) FROM t6;
344 }
345 } 1
346 do_test minmax-10.6 {
347 execsql {
348 SELECT count(x) FROM t6;
349 }
350 } 0
351 ifcapable subquery {
352 do_test minmax-10.7 {
353 execsql {
354 SELECT (SELECT min(x) FROM t6), (SELECT max(x) FROM t6);
355 }
356 } {{} {}}
357 }
358 do_test minmax-10.8 {
359 execsql {
360 SELECT min(x), max(x) FROM t6;
361 }
362 } {{} {}}
363 do_test minmax-10.9 {
364 execsql {
365 INSERT INTO t6 SELECT * FROM t6;
366 INSERT INTO t6 SELECT * FROM t6;
367 INSERT INTO t6 SELECT * FROM t6;
368 INSERT INTO t6 SELECT * FROM t6;
369 INSERT INTO t6 SELECT * FROM t6;
370 INSERT INTO t6 SELECT * FROM t6;
371 INSERT INTO t6 SELECT * FROM t6;
372 INSERT INTO t6 SELECT * FROM t6;
373 INSERT INTO t6 SELECT * FROM t6;
374 INSERT INTO t6 SELECT * FROM t6;
375 SELECT count(*) FROM t6;
376 }
377 } 1024
378 do_test minmax-10.10 {
379 execsql {
380 SELECT count(x) FROM t6;
381 }
382 } 0
383 ifcapable subquery {
384 do_test minmax-10.11 {
385 execsql {
386 SELECT (SELECT min(x) FROM t6), (SELECT max(x) FROM t6);
387 }
388 } {{} {}}
389 }
390 do_test minmax-10.12 {
391 execsql {
392 SELECT min(x), max(x) FROM t6;
393 }
394 } {{} {}}
395  
396  
397 do_test minmax-11.1 {
398 execsql {
399 CREATE INDEX t1i2 ON t1(y,x);
400 SELECT min(x) FROM t1 WHERE y=5;
401 }
402 } {16}
403 do_test minmax-11.2 {
404 execsql {
405 SELECT max(x) FROM t1 WHERE y=5;
406 }
407 } {20}
408 do_test minmax-11.3 {
409 execsql {
410 SELECT min(x) FROM t1 WHERE y=6;
411 }
412 } {{}}
413 do_test minmax-11.4 {
414 execsql {
415 SELECT max(x) FROM t1 WHERE y=6;
416 }
417 } {{}}
418 do_test minmax-11.5 {
419 execsql {
420 SELECT min(x) FROM t1 WHERE y=1;
421 }
422 } {1}
423 do_test minmax-11.6 {
424 execsql {
425 SELECT max(x) FROM t1 WHERE y=1;
426 }
427 } {1}
428 do_test minmax-11.7 {
429 execsql {
430 SELECT min(x) FROM t1 WHERE y=0;
431 }
432 } {{}}
433 do_test minmax-11.8 {
434 execsql {
435 SELECT max(x) FROM t1 WHERE y=0;
436 }
437 } {{}}
438 do_test minmax-11.9 {
439 execsql {
440 SELECT min(x) FROM t1 WHERE y=5 AND x>=17.5;
441 }
442 } {18}
443 do_test minmax-11.10 {
444 execsql {
445 SELECT max(x) FROM t1 WHERE y=5 AND x>=17.5;
446 }
447 } {20}
448  
449 do_test minmax-12.1 {
450 execsql {
451 CREATE TABLE t7(a,b,c);
452 INSERT INTO t7 SELECT y, x, x*y FROM t1;
453 INSERT INTO t7 SELECT y, x, x*y+1000 FROM t1;
454 CREATE INDEX t7i1 ON t7(a,b,c);
455 SELECT min(a) FROM t7;
456 }
457 } {1}
458 do_test minmax-12.2 {
459 execsql {
460 SELECT max(a) FROM t7;
461 }
462 } {5}
463 do_test minmax-12.3 {
464 execsql {
465 SELECT max(a) FROM t7 WHERE a=5;
466 }
467 } {5}
468 do_test minmax-12.4 {
469 execsql {
470 SELECT min(b) FROM t7 WHERE a=5;
471 }
472 } {16}
473 do_test minmax-12.5 {
474 execsql {
475 SELECT max(b) FROM t7 WHERE a=5;
476 }
477 } {20}
478 do_test minmax-12.6 {
479 execsql {
480 SELECT min(b) FROM t7 WHERE a=4;
481 }
482 } {8}
483 do_test minmax-12.7 {
484 execsql {
485 SELECT max(b) FROM t7 WHERE a=4;
486 }
487 } {15}
488 do_test minmax-12.8 {
489 execsql {
490 SELECT min(c) FROM t7 WHERE a=4 AND b=10;
491 }
492 } {40}
493 do_test minmax-12.9 {
494 execsql {
495 SELECT max(c) FROM t7 WHERE a=4 AND b=10;
496 }
497 } {1040}
498 do_test minmax-12.10 {
499 execsql {
500 SELECT min(rowid) FROM t7;
501 }
502 } {1}
503 do_test minmax-12.11 {
504 execsql {
505 SELECT max(rowid) FROM t7;
506 }
507 } {40}
508 do_test minmax-12.12 {
509 execsql {
510 SELECT min(rowid) FROM t7 WHERE a=3;
511 }
512 } {4}
513 do_test minmax-12.13 {
514 execsql {
515 SELECT max(rowid) FROM t7 WHERE a=3;
516 }
517 } {27}
518 do_test minmax-12.14 {
519 execsql {
520 SELECT min(rowid) FROM t7 WHERE a=3 AND b=5;
521 }
522 } {5}
523 do_test minmax-12.15 {
524 execsql {
525 SELECT max(rowid) FROM t7 WHERE a=3 AND b=5;
526 }
527 } {25}
528 do_test minmax-12.16 {
529 execsql {
530 SELECT min(rowid) FROM t7 WHERE a=3 AND b=5 AND c=1015;
531 }
532 } {25}
533 do_test minmax-12.17 {
534 execsql {
535 SELECT max(rowid) FROM t7 WHERE a=3 AND b=5 AND c=15;
536 }
537 } {5}
538  
539  
540  
541  
542 finish_test