1#
2# 2002 May 24
3#
4# The author disclaims copyright to this source code.  In place of
5# a legal notice, here is a blessing:
6#
7#    May you do good and not evil.
8#    May you find forgiveness for yourself and forgive others.
9#    May you share freely, never taking more than you give.
10#
11#***********************************************************************
12# This file implements regression tests for SQLite library.
13#
14# This file implements tests for joins, including outer joins.
15#
16# $Id: join.test,v 1.11 2003/09/27 13:39:40 drh Exp $
17
18set testdir [file dirname $argv0]
19source $testdir/tester.tcl
20
21do_test join-1.1 {
22  execsql {
23    CREATE TABLE t1(a,b,c);
24    INSERT INTO t1 VALUES(1,2,3);
25    INSERT INTO t1 VALUES(2,3,4);
26    INSERT INTO t1 VALUES(3,4,5);
27    SELECT * FROM t1;
28  }
29} {1 2 3 2 3 4 3 4 5}
30do_test join-1.2 {
31  execsql {
32    CREATE TABLE t2(b,c,d);
33    INSERT INTO t2 VALUES(1,2,3);
34    INSERT INTO t2 VALUES(2,3,4);
35    INSERT INTO t2 VALUES(3,4,5);
36    SELECT * FROM t2;
37  }
38} {1 2 3 2 3 4 3 4 5}
39
40do_test join-1.3 {
41  execsql2 {
42    SELECT * FROM t1 NATURAL JOIN t2;
43  }
44} {t1.a 1 t1.b 2 t1.c 3 t2.d 4 t1.a 2 t1.b 3 t1.c 4 t2.d 5}
45do_test join-1.3.1 {
46  execsql2 {
47    SELECT * FROM t2 NATURAL JOIN t1;
48  }
49} {t2.b 2 t2.c 3 t2.d 4 t1.a 1 t2.b 3 t2.c 4 t2.d 5 t1.a 2}
50do_test join-1.4 {
51  execsql2 {
52    SELECT * FROM t1 INNER JOIN t2 USING(b,c);
53  }
54} {t1.a 1 t1.b 2 t1.c 3 t2.d 4 t1.a 2 t1.b 3 t1.c 4 t2.d 5}
55do_test join-1.5 {
56  execsql2 {
57    SELECT * FROM t1 INNER JOIN t2 USING(b);
58  }
59} {t1.a 1 t1.b 2 t1.c 3 t2.c 3 t2.d 4 t1.a 2 t1.b 3 t1.c 4 t2.c 4 t2.d 5}
60do_test join-1.6 {
61  execsql2 {
62    SELECT * FROM t1 INNER JOIN t2 USING(c);
63  }
64} {t1.a 1 t1.b 2 t1.c 3 t2.b 2 t2.d 4 t1.a 2 t1.b 3 t1.c 4 t2.b 3 t2.d 5}
65do_test join-1.7 {
66  execsql2 {
67    SELECT * FROM t1 INNER JOIN t2 USING(c,b);
68  }
69} {t1.a 1 t1.b 2 t1.c 3 t2.d 4 t1.a 2 t1.b 3 t1.c 4 t2.d 5}
70
71do_test join-1.8 {
72  execsql {
73    SELECT * FROM t1 NATURAL CROSS JOIN t2;
74  }
75} {1 2 3 4 2 3 4 5}
76do_test join-1.9 {
77  execsql {
78    SELECT * FROM t1 CROSS JOIN t2 USING(b,c);
79  }
80} {1 2 3 4 2 3 4 5}
81do_test join-1.10 {
82  execsql {
83    SELECT * FROM t1 NATURAL INNER JOIN t2;
84  }
85} {1 2 3 4 2 3 4 5}
86do_test join-1.11 {
87  execsql {
88    SELECT * FROM t1 INNER JOIN t2 USING(b,c);
89  }
90} {1 2 3 4 2 3 4 5}
91do_test join-1.12 {
92  execsql {
93    SELECT * FROM t1 natural inner join t2;
94  }
95} {1 2 3 4 2 3 4 5}
96do_test join-1.13 {
97  execsql2 {
98    SELECT * FROM t1 NATURAL JOIN
99      (SELECT b as 'c', c as 'd', d as 'e' FROM t2) as t3
100  }
101} {t1.a 1 t1.b 2 t1.c 3 t3.d 4 t3.e 5}
102do_test join-1.14 {
103  execsql2 {
104    SELECT * FROM (SELECT b as 'c', c as 'd', d as 'e' FROM t2) as 'tx'
105        NATURAL JOIN t1
106  }
107} {tx.c 3 tx.d 4 tx.e 5 t1.a 1 t1.b 2}
108
109do_test join-1.15 {
110  execsql {
111    CREATE TABLE t3(c,d,e);
112    INSERT INTO t3 VALUES(2,3,4);
113    INSERT INTO t3 VALUES(3,4,5);
114    INSERT INTO t3 VALUES(4,5,6);
115    SELECT * FROM t3;
116  }
117} {2 3 4 3 4 5 4 5 6}
118do_test join-1.16 {
119  execsql {
120    SELECT * FROM t1 natural join t2 natural join t3;
121  }
122} {1 2 3 4 5 2 3 4 5 6}
123do_test join-1.17 {
124  execsql2 {
125    SELECT * FROM t1 natural join t2 natural join t3;
126  }
127} {t1.a 1 t1.b 2 t1.c 3 t2.d 4 t3.e 5 t1.a 2 t1.b 3 t1.c 4 t2.d 5 t3.e 6}
128do_test join-1.18 {
129  execsql {
130    CREATE TABLE t4(d,e,f);
131    INSERT INTO t4 VALUES(2,3,4);
132    INSERT INTO t4 VALUES(3,4,5);
133    INSERT INTO t4 VALUES(4,5,6);
134    SELECT * FROM t4;
135  }
136} {2 3 4 3 4 5 4 5 6}
137do_test join-1.19 {
138  execsql {
139    SELECT * FROM t1 natural join t2 natural join t4;
140  }
141} {1 2 3 4 5 6}
142do_test join-1.19 {
143  execsql2 {
144    SELECT * FROM t1 natural join t2 natural join t4;
145  }
146} {t1.a 1 t1.b 2 t1.c 3 t2.d 4 t4.e 5 t4.f 6}
147do_test join-1.20 {
148  execsql {
149    SELECT * FROM t1 natural join t2 natural join t3 WHERE t1.a=1
150  }
151} {1 2 3 4 5}
152
153do_test join-2.1 {
154  execsql {
155    SELECT * FROM t1 NATURAL LEFT JOIN t2;
156  }
157} {1 2 3 4 2 3 4 5 3 4 5 {}}
158do_test join-2.2 {
159  execsql {
160    SELECT * FROM t2 NATURAL LEFT OUTER JOIN t1;
161  }
162} {1 2 3 {} 2 3 4 1 3 4 5 2}
163do_test join-2.3 {
164  catchsql {
165    SELECT * FROM t1 NATURAL RIGHT OUTER JOIN t2;
166  }
167} {1 {RIGHT and FULL OUTER JOINs are not currently supported}}
168do_test join-2.4 {
169  execsql {
170    SELECT * FROM t1 LEFT JOIN t2 ON t1.a=t2.d
171  }
172} {1 2 3 {} {} {} 2 3 4 {} {} {} 3 4 5 1 2 3}
173do_test join-2.5 {
174  execsql {
175    SELECT * FROM t1 LEFT JOIN t2 ON t1.a=t2.d WHERE t1.a>1
176  }
177} {2 3 4 {} {} {} 3 4 5 1 2 3}
178do_test join-2.6 {
179  execsql {
180    SELECT * FROM t1 LEFT JOIN t2 ON t1.a=t2.d WHERE t2.b IS NULL OR t2.b>1
181  }
182} {1 2 3 {} {} {} 2 3 4 {} {} {}}
183
184do_test join-3.1 {
185  catchsql {
186    SELECT * FROM t1 NATURAL JOIN t2 ON t1.a=t2.b;
187  }
188} {1 {a NATURAL join may not have an ON or USING clause}}
189do_test join-3.2 {
190  catchsql {
191    SELECT * FROM t1 NATURAL JOIN t2 USING(b);
192  }
193} {1 {a NATURAL join may not have an ON or USING clause}}
194do_test join-3.3 {
195  catchsql {
196    SELECT * FROM t1 JOIN t2 ON t1.a=t2.b USING(b);
197  }
198} {1 {cannot have both ON and USING clauses in the same join}}
199do_test join-3.4 {
200  catchsql {
201    SELECT * FROM t1 JOIN t2 USING(a);
202  }
203} {1 {cannot join using column a - column not present in both tables}}
204do_test join-3.5 {
205  catchsql {
206    SELECT * FROM t1 USING(a);
207  }
208} {0 {1 2 3 2 3 4 3 4 5}}
209do_test join-3.6 {
210  catchsql {
211    SELECT * FROM t1 JOIN t2 ON t3.a=t2.b;
212  }
213} {1 {no such column: t3.a}}
214do_test join-3.7 {
215  catchsql {
216    SELECT * FROM t1 INNER OUTER JOIN t2;
217  }
218} {1 {unknown or unsupported join type: INNER OUTER}}
219do_test join-3.7 {
220  catchsql {
221    SELECT * FROM t1 LEFT BOGUS JOIN t2;
222  }
223} {1 {unknown or unsupported join type: LEFT BOGUS}}
224
225do_test join-4.1 {
226  execsql {
227    BEGIN;
228    CREATE TABLE t5(a INTEGER PRIMARY KEY);
229    CREATE TABLE t6(a INTEGER);
230    INSERT INTO t6 VALUES(NULL);
231    INSERT INTO t6 VALUES(NULL);
232    INSERT INTO t6 SELECT * FROM t6;
233    INSERT INTO t6 SELECT * FROM t6;
234    INSERT INTO t6 SELECT * FROM t6;
235    INSERT INTO t6 SELECT * FROM t6;
236    INSERT INTO t6 SELECT * FROM t6;
237    INSERT INTO t6 SELECT * FROM t6;
238    COMMIT;
239  }
240  execsql {
241    SELECT * FROM t6 NATURAL JOIN t5;
242  }
243} {}
244do_test join-4.2 {
245  execsql {
246    SELECT * FROM t6, t5 WHERE t6.a<t5.a;
247  }
248} {}
249do_test join-4.3 {
250  execsql {
251    SELECT * FROM t6, t5 WHERE t6.a>t5.a;
252  }
253} {}
254do_test join-4.4 {
255  execsql {
256    UPDATE t6 SET a='xyz';
257    SELECT * FROM t6 NATURAL JOIN t5;
258  }
259} {}
260do_test join-4.6 {
261  execsql {
262    SELECT * FROM t6, t5 WHERE t6.a<t5.a;
263  }
264} {}
265do_test join-4.7 {
266  execsql {
267    SELECT * FROM t6, t5 WHERE t6.a>t5.a;
268  }
269} {}
270do_test join-4.8 {
271  execsql {
272    UPDATE t6 SET a=1;
273    SELECT * FROM t6 NATURAL JOIN t5;
274  }
275} {}
276do_test join-4.9 {
277  execsql {
278    SELECT * FROM t6, t5 WHERE t6.a<t5.a;
279  }
280} {}
281do_test join-4.10 {
282  execsql {
283    SELECT * FROM t6, t5 WHERE t6.a>t5.a;
284  }
285} {}
286
287do_test join-5.1 {
288  execsql {
289    BEGIN;
290    create table centros (id integer primary key, centro);
291    INSERT INTO centros VALUES(1,'xxx');
292    create table usuarios (id integer primary key, nombre, apellidos,
293    idcentro integer);
294    INSERT INTO usuarios VALUES(1,'a','aa',1);
295    INSERT INTO usuarios VALUES(2,'b','bb',1);
296    INSERT INTO usuarios VALUES(3,'c','cc',NULL);
297    create index idcentro on usuarios (idcentro);
298    END;
299    select usuarios.id, usuarios.nombre, centros.centro from
300    usuarios left outer join centros on usuarios.idcentro = centros.id;
301  }
302} {1 a xxx 2 b xxx 3 c {}}
303
304# A test for ticket #247.
305#
306do_test join-7.1 {
307  execsql {
308    CREATE TABLE t7 (x, y);
309    INSERT INTO t7 VALUES ("pa1", 1);
310    INSERT INTO t7 VALUES ("pa2", NULL);
311    INSERT INTO t7 VALUES ("pa3", NULL);
312    INSERT INTO t7 VALUES ("pa4", 2);
313    INSERT INTO t7 VALUES ("pa30", 131);
314    INSERT INTO t7 VALUES ("pa31", 130);
315    INSERT INTO t7 VALUES ("pa28", NULL);
316
317    CREATE TABLE t8 (a integer primary key, b);
318    INSERT INTO t8 VALUES (1, "pa1");
319    INSERT INTO t8 VALUES (2, "pa4");
320    INSERT INTO t8 VALUES (3, NULL);
321    INSERT INTO t8 VALUES (4, NULL);
322    INSERT INTO t8 VALUES (130, "pa31");
323    INSERT INTO t8 VALUES (131, "pa30");
324
325    SELECT coalesce(t8.a,999) from t7 LEFT JOIN t8 on y=a;
326  }
327} {1 999 999 2 131 130 999}
328
329# Make sure a left join where the right table is really a view that
330# is itself a join works right.  Ticket #306.
331#
332do_test join-8.1 {
333  execsql {
334    BEGIN;
335    CREATE TABLE t9(a INTEGER PRIMARY KEY, b);
336    INSERT INTO t9 VALUES(1,11);
337    INSERT INTO t9 VALUES(2,22);
338    CREATE TABLE t10(x INTEGER PRIMARY KEY, y);
339    INSERT INTO t10 VALUES(1,2);
340    INSERT INTO t10 VALUES(3,3);
341    CREATE TABLE t11(p INTEGER PRIMARY KEY, q);
342    INSERT INTO t11 VALUES(2,111);
343    INSERT INTO t11 VALUES(3,333);
344    CREATE VIEW v10_11 AS SELECT x, q FROM t10, t11 WHERE t10.y=t11.p;
345    COMMIT;
346    SELECT * FROM t9 LEFT JOIN v10_11 ON( a=x );
347  }
348} {1 11 1 111 2 22 {} {}}
349do_test join-8.2 {
350  execsql {
351    SELECT * FROM t9 LEFT JOIN (SELECT x, q FROM t10, t11 WHERE t10.y=t11.p)
352         ON( a=x);
353  }
354} {1 11 1 111 2 22 {} {}}
355do_test join-8.3 {
356  execsql {
357    SELECT * FROM v10_11 LEFT JOIN t9 ON( a=x );
358  }
359} {1 111 1 11 3 333 {} {}}
360
361# Ticket #350 describes a scenario where LEFT OUTER JOIN does not
362# function correctly if the right table in the join is really
363# subquery.
364#
365# To test the problem, we generate the same LEFT OUTER JOIN in two
366# separate selects but with on using a subquery and the other calling
367# the table directly.  Then connect the two SELECTs using an EXCEPT.
368# Both queries should generate the same results so the answer should
369# be an empty set.
370#
371do_test join-9.1 {
372  execsql {
373    BEGIN;
374    CREATE TABLE t12(a,b);
375    INSERT INTO t12 VALUES(1,11);
376    INSERT INTO t12 VALUES(2,22);
377    CREATE TABLE t13(b,c);
378    INSERT INTO t13 VALUES(22,222);
379    COMMIT;
380    SELECT * FROM t12 NATURAL LEFT JOIN t13
381      EXCEPT
382      SELECT * FROM t12 NATURAL LEFT JOIN (SELECT * FROM t13 WHERE b>0);
383  }
384} {}
385do_test join-9.2 {
386  execsql {
387    CREATE VIEW v13 AS SELECT * FROM t13 WHERE b>0;
388    SELECT * FROM t12 NATURAL LEFT JOIN t13
389      EXCEPT
390      SELECT * FROM t12 NATURAL LEFT JOIN v13;
391  }
392} {}
393
394finish_test
395