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1 # 2002 May 24
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.
12 #
13 # This file implements tests for joins, including outer joins.
14 #
15 # $Id: join.test,v 1.20 2005/06/06 17:11:46 drh Exp $
17 set testdir [file dirname $argv0]
18 source $testdir/tester.tcl
20 do_test join-1.1 {
21 execsql {
22 CREATE TABLE t1(a,b,c);
23 INSERT INTO t1 VALUES(1,2,3);
24 INSERT INTO t1 VALUES(2,3,4);
25 INSERT INTO t1 VALUES(3,4,5);
26 SELECT * FROM t1;
27 }
28 } {1 2 3 2 3 4 3 4 5}
29 do_test join-1.2 {
30 execsql {
31 CREATE TABLE t2(b,c,d);
32 INSERT INTO t2 VALUES(1,2,3);
33 INSERT INTO t2 VALUES(2,3,4);
34 INSERT INTO t2 VALUES(3,4,5);
35 SELECT * FROM t2;
36 }
37 } {1 2 3 2 3 4 3 4 5}
39 do_test join-1.3 {
40 execsql2 {
41 SELECT * FROM t1 NATURAL JOIN t2;
42 }
43 } {a 1 b 2 c 3 d 4 a 2 b 3 c 4 d 5}
44 do_test join-1.3.1 {
45 execsql2 {
46 SELECT * FROM t2 NATURAL JOIN t1;
47 }
48 } {b 2 c 3 d 4 a 1 b 3 c 4 d 5 a 2}
49 do_test join-1.3.2 {
50 execsql2 {
51 SELECT * FROM t2 AS x NATURAL JOIN t1;
52 }
53 } {b 2 c 3 d 4 a 1 b 3 c 4 d 5 a 2}
54 do_test join-1.3.3 {
55 execsql2 {
56 SELECT * FROM t2 NATURAL JOIN t1 AS y;
57 }
58 } {b 2 c 3 d 4 a 1 b 3 c 4 d 5 a 2}
59 do_test join-1.3.4 {
60 execsql {
61 SELECT b FROM t1 NATURAL JOIN t2;
62 }
63 } {2 3}
64 do_test join-1.4.1 {
65 execsql2 {
66 SELECT * FROM t1 INNER JOIN t2 USING(b,c);
67 }
68 } {a 1 b 2 c 3 d 4 a 2 b 3 c 4 d 5}
69 do_test join-1.4.2 {
70 execsql2 {
71 SELECT * FROM t1 AS x INNER JOIN t2 USING(b,c);
72 }
73 } {a 1 b 2 c 3 d 4 a 2 b 3 c 4 d 5}
74 do_test join-1.4.3 {
75 execsql2 {
76 SELECT * FROM t1 INNER JOIN t2 AS y USING(b,c);
77 }
78 } {a 1 b 2 c 3 d 4 a 2 b 3 c 4 d 5}
79 do_test join-1.4.4 {
80 execsql2 {
81 SELECT * FROM t1 AS x INNER JOIN t2 AS y USING(b,c);
82 }
83 } {a 1 b 2 c 3 d 4 a 2 b 3 c 4 d 5}
84 do_test join-1.4.5 {
85 execsql {
86 SELECT b FROM t1 JOIN t2 USING(b);
87 }
88 } {2 3}
89 do_test join-1.5 {
90 execsql2 {
91 SELECT * FROM t1 INNER JOIN t2 USING(b);
92 }
93 } {a 1 b 2 c 3 c 3 d 4 a 2 b 3 c 4 c 4 d 5}
94 do_test join-1.6 {
95 execsql2 {
96 SELECT * FROM t1 INNER JOIN t2 USING(c);
97 }
98 } {a 1 b 2 c 3 b 2 d 4 a 2 b 3 c 4 b 3 d 5}
99 do_test join-1.7 {
100 execsql2 {
101 SELECT * FROM t1 INNER JOIN t2 USING(c,b);
102 }
103 } {a 1 b 2 c 3 d 4 a 2 b 3 c 4 d 5}
105 do_test join-1.8 {
106 execsql {
107 SELECT * FROM t1 NATURAL CROSS JOIN t2;
108 }
109 } {1 2 3 4 2 3 4 5}
110 do_test join-1.9 {
111 execsql {
112 SELECT * FROM t1 CROSS JOIN t2 USING(b,c);
113 }
114 } {1 2 3 4 2 3 4 5}
115 do_test join-1.10 {
116 execsql {
117 SELECT * FROM t1 NATURAL INNER JOIN t2;
118 }
119 } {1 2 3 4 2 3 4 5}
120 do_test join-1.11 {
121 execsql {
122 SELECT * FROM t1 INNER JOIN t2 USING(b,c);
123 }
124 } {1 2 3 4 2 3 4 5}
125 do_test join-1.12 {
126 execsql {
127 SELECT * FROM t1 natural inner join t2;
128 }
129 } {1 2 3 4 2 3 4 5}
131 ifcapable subquery {
132 do_test join-1.13 {
133 execsql2 {
134 SELECT * FROM t1 NATURAL JOIN
135 (SELECT b as 'c', c as 'd', d as 'e' FROM t2) as t3
136 }
137 } {a 1 b 2 c 3 d 4 e 5}
138 do_test join-1.14 {
139 execsql2 {
140 SELECT * FROM (SELECT b as 'c', c as 'd', d as 'e' FROM t2) as 'tx'
141 NATURAL JOIN t1
142 }
143 } {c 3 d 4 e 5 a 1 b 2}
144 }
146 do_test join-1.15 {
147 execsql {
148 CREATE TABLE t3(c,d,e);
149 INSERT INTO t3 VALUES(2,3,4);
150 INSERT INTO t3 VALUES(3,4,5);
151 INSERT INTO t3 VALUES(4,5,6);
152 SELECT * FROM t3;
153 }
154 } {2 3 4 3 4 5 4 5 6}
155 do_test join-1.16 {
156 execsql {
157 SELECT * FROM t1 natural join t2 natural join t3;
158 }
159 } {1 2 3 4 5 2 3 4 5 6}
160 do_test join-1.17 {
161 execsql2 {
162 SELECT * FROM t1 natural join t2 natural join t3;
163 }
164 } {a 1 b 2 c 3 d 4 e 5 a 2 b 3 c 4 d 5 e 6}
165 do_test join-1.18 {
166 execsql {
167 CREATE TABLE t4(d,e,f);
168 INSERT INTO t4 VALUES(2,3,4);
169 INSERT INTO t4 VALUES(3,4,5);
170 INSERT INTO t4 VALUES(4,5,6);
171 SELECT * FROM t4;
172 }
173 } {2 3 4 3 4 5 4 5 6}
174 do_test join-1.19.1 {
175 execsql {
176 SELECT * FROM t1 natural join t2 natural join t4;
177 }
178 } {1 2 3 4 5 6}
179 do_test join-1.19.2 {
180 execsql2 {
181 SELECT * FROM t1 natural join t2 natural join t4;
182 }
183 } {a 1 b 2 c 3 d 4 e 5 f 6}
184 do_test join-1.20 {
185 execsql {
186 SELECT * FROM t1 natural join t2 natural join t3 WHERE t1.a=1
187 }
188 } {1 2 3 4 5}
190 do_test join-2.1 {
191 execsql {
192 SELECT * FROM t1 NATURAL LEFT JOIN t2;
193 }
194 } {1 2 3 4 2 3 4 5 3 4 5 {}}
195 do_test join-2.2 {
196 execsql {
197 SELECT * FROM t2 NATURAL LEFT OUTER JOIN t1;
198 }
199 } {1 2 3 {} 2 3 4 1 3 4 5 2}
200 do_test join-2.3 {
201 catchsql {
202 SELECT * FROM t1 NATURAL RIGHT OUTER JOIN t2;
203 }
204 } {1 {RIGHT and FULL OUTER JOINs are not currently supported}}
205 do_test join-2.4 {
206 execsql {
207 SELECT * FROM t1 LEFT JOIN t2 ON t1.a=t2.d
208 }
209 } {1 2 3 {} {} {} 2 3 4 {} {} {} 3 4 5 1 2 3}
210 do_test join-2.5 {
211 execsql {
212 SELECT * FROM t1 LEFT JOIN t2 ON t1.a=t2.d WHERE t1.a>1
213 }
214 } {2 3 4 {} {} {} 3 4 5 1 2 3}
215 do_test join-2.6 {
216 execsql {
217 SELECT * FROM t1 LEFT JOIN t2 ON t1.a=t2.d WHERE t2.b IS NULL OR t2.b>1
218 }
219 } {1 2 3 {} {} {} 2 3 4 {} {} {}}
221 do_test join-3.1 {
222 catchsql {
223 SELECT * FROM t1 NATURAL JOIN t2 ON t1.a=t2.b;
224 }
225 } {1 {a NATURAL join may not have an ON or USING clause}}
226 do_test join-3.2 {
227 catchsql {
228 SELECT * FROM t1 NATURAL JOIN t2 USING(b);
229 }
230 } {1 {a NATURAL join may not have an ON or USING clause}}
231 do_test join-3.3 {
232 catchsql {
233 SELECT * FROM t1 JOIN t2 ON t1.a=t2.b USING(b);
234 }
235 } {1 {cannot have both ON and USING clauses in the same join}}
236 do_test join-3.4 {
237 catchsql {
238 SELECT * FROM t1 JOIN t2 USING(a);
239 }
240 } {1 {cannot join using column a - column not present in both tables}}
241 do_test join-3.5 {
242 catchsql {
243 SELECT * FROM t1 USING(a);
244 }
245 } {0 {1 2 3 2 3 4 3 4 5}}
246 do_test join-3.6 {
247 catchsql {
248 SELECT * FROM t1 JOIN t2 ON t3.a=t2.b;
249 }
250 } {1 {no such column: t3.a}}
251 do_test join-3.7 {
252 catchsql {
253 SELECT * FROM t1 INNER OUTER JOIN t2;
254 }
255 } {1 {unknown or unsupported join type: INNER OUTER}}
256 do_test join-3.7 {
257 catchsql {
258 SELECT * FROM t1 LEFT BOGUS JOIN t2;
259 }
260 } {1 {unknown or unsupported join type: LEFT BOGUS}}
262 do_test join-4.1 {
263 execsql {
264 BEGIN;
265 CREATE TABLE t5(a INTEGER PRIMARY KEY);
266 CREATE TABLE t6(a INTEGER);
267 INSERT INTO t6 VALUES(NULL);
268 INSERT INTO t6 VALUES(NULL);
269 INSERT INTO t6 SELECT * FROM t6;
270 INSERT INTO t6 SELECT * FROM t6;
271 INSERT INTO t6 SELECT * FROM t6;
272 INSERT INTO t6 SELECT * FROM t6;
273 INSERT INTO t6 SELECT * FROM t6;
274 INSERT INTO t6 SELECT * FROM t6;
275 COMMIT;
276 }
277 execsql {
278 SELECT * FROM t6 NATURAL JOIN t5;
279 }
280 } {}
281 do_test join-4.2 {
282 execsql {
283 SELECT * FROM t6, t5 WHERE t6.a<t5.a;
284 }
285 } {}
286 do_test join-4.3 {
287 execsql {
288 SELECT * FROM t6, t5 WHERE t6.a>t5.a;
289 }
290 } {}
291 do_test join-4.4 {
292 execsql {
293 UPDATE t6 SET a='xyz';
294 SELECT * FROM t6 NATURAL JOIN t5;
295 }
296 } {}
297 do_test join-4.6 {
298 execsql {
299 SELECT * FROM t6, t5 WHERE t6.a<t5.a;
300 }
301 } {}
302 do_test join-4.7 {
303 execsql {
304 SELECT * FROM t6, t5 WHERE t6.a>t5.a;
305 }
306 } {}
307 do_test join-4.8 {
308 execsql {
309 UPDATE t6 SET a=1;
310 SELECT * FROM t6 NATURAL JOIN t5;
311 }
312 } {}
313 do_test join-4.9 {
314 execsql {
315 SELECT * FROM t6, t5 WHERE t6.a<t5.a;
316 }
317 } {}
318 do_test join-4.10 {
319 execsql {
320 SELECT * FROM t6, t5 WHERE t6.a>t5.a;
321 }
322 } {}
324 do_test join-5.1 {
325 execsql {
326 BEGIN;
327 create table centros (id integer primary key, centro);
328 INSERT INTO centros VALUES(1,'xxx');
329 create table usuarios (id integer primary key, nombre, apellidos,
330 idcentro integer);
331 INSERT INTO usuarios VALUES(1,'a','aa',1);
332 INSERT INTO usuarios VALUES(2,'b','bb',1);
333 INSERT INTO usuarios VALUES(3,'c','cc',NULL);
334 create index idcentro on usuarios (idcentro);
335 END;
336 select usuarios.id, usuarios.nombre, centros.centro from
337 usuarios left outer join centros on usuarios.idcentro = centros.id;
338 }
339 } {1 a xxx 2 b xxx 3 c {}}
341 # A test for ticket #247.
342 #
343 do_test join-7.1 {
344 execsql {
345 CREATE TABLE t7 (x, y);
346 INSERT INTO t7 VALUES ("pa1", 1);
347 INSERT INTO t7 VALUES ("pa2", NULL);
348 INSERT INTO t7 VALUES ("pa3", NULL);
349 INSERT INTO t7 VALUES ("pa4", 2);
350 INSERT INTO t7 VALUES ("pa30", 131);
351 INSERT INTO t7 VALUES ("pa31", 130);
352 INSERT INTO t7 VALUES ("pa28", NULL);
354 CREATE TABLE t8 (a integer primary key, b);
355 INSERT INTO t8 VALUES (1, "pa1");
356 INSERT INTO t8 VALUES (2, "pa4");
357 INSERT INTO t8 VALUES (3, NULL);
358 INSERT INTO t8 VALUES (4, NULL);
359 INSERT INTO t8 VALUES (130, "pa31");
360 INSERT INTO t8 VALUES (131, "pa30");
362 SELECT coalesce(t8.a,999) from t7 LEFT JOIN t8 on y=a;
363 }
364 } {1 999 999 2 131 130 999}
366 # Make sure a left join where the right table is really a view that
367 # is itself a join works right. Ticket #306.
368 #
369 ifcapable view {
370 do_test join-8.1 {
371 execsql {
372 BEGIN;
373 CREATE TABLE t9(a INTEGER PRIMARY KEY, b);
374 INSERT INTO t9 VALUES(1,11);
375 INSERT INTO t9 VALUES(2,22);
376 CREATE TABLE t10(x INTEGER PRIMARY KEY, y);
377 INSERT INTO t10 VALUES(1,2);
378 INSERT INTO t10 VALUES(3,3);
379 CREATE TABLE t11(p INTEGER PRIMARY KEY, q);
380 INSERT INTO t11 VALUES(2,111);
381 INSERT INTO t11 VALUES(3,333);
382 CREATE VIEW v10_11 AS SELECT x, q FROM t10, t11 WHERE t10.y=t11.p;
383 COMMIT;
384 SELECT * FROM t9 LEFT JOIN v10_11 ON( a=x );
385 }
386 } {1 11 1 111 2 22 {} {}}
387 ifcapable subquery {
388 do_test join-8.2 {
389 execsql {
390 SELECT * FROM t9 LEFT JOIN (SELECT x, q FROM t10, t11 WHERE t10.y=t11.p)
391 ON( a=x);
392 }
393 } {1 11 1 111 2 22 {} {}}
394 }
395 do_test join-8.3 {
396 execsql {
397 SELECT * FROM v10_11 LEFT JOIN t9 ON( a=x );
398 }
399 } {1 111 1 11 3 333 {} {}}
400 } ;# ifcapable view
402 # Ticket #350 describes a scenario where LEFT OUTER JOIN does not
403 # function correctly if the right table in the join is really
404 # subquery.
405 #
406 # To test the problem, we generate the same LEFT OUTER JOIN in two
407 # separate selects but with on using a subquery and the other calling
408 # the table directly. Then connect the two SELECTs using an EXCEPT.
409 # Both queries should generate the same results so the answer should
410 # be an empty set.
411 #
412 ifcapable compound {
413 do_test join-9.1 {
414 execsql {
415 BEGIN;
416 CREATE TABLE t12(a,b);
417 INSERT INTO t12 VALUES(1,11);
418 INSERT INTO t12 VALUES(2,22);
419 CREATE TABLE t13(b,c);
420 INSERT INTO t13 VALUES(22,222);
421 COMMIT;
422 }
423 } {}
425 ifcapable subquery {
426 do_test join-9.1.1 {
427 execsql {
428 SELECT * FROM t12 NATURAL LEFT JOIN t13
429 EXCEPT
430 SELECT * FROM t12 NATURAL LEFT JOIN (SELECT * FROM t13 WHERE b>0);
431 }
432 } {}
433 }
434 ifcapable view {
435 do_test join-9.2 {
436 execsql {
437 CREATE VIEW v13 AS SELECT * FROM t13 WHERE b>0;
438 SELECT * FROM t12 NATURAL LEFT JOIN t13
439 EXCEPT
440 SELECT * FROM t12 NATURAL LEFT JOIN v13;
441 }
442 } {}
443 } ;# ifcapable view
444 } ;# ifcapable compound
446 finish_test