3 # The author disclaims copyright to this source code. In place of
4 # a legal notice, here is a blessing:
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.
10 #***********************************************************************
11 # This file implements regression tests for SQLite library.
13 # This file implements tests for left outer joins containing ON
14 # clauses that restrict the scope of the left term of the join.
16 # $Id: join5.test,v 1.2 2007/06/08 00:20:48 drh Exp $
18 set testdir [file dirname $argv0]
19 source $testdir/tester.tcl
25 CREATE TABLE t1(a integer primary key, b integer, c integer);
26 CREATE TABLE t2(x integer primary key, y);
27 CREATE TABLE t3(p integer primary key, q);
28 INSERT INTO t3 VALUES(11,'t3-11');
29 INSERT INTO t3 VALUES(12,'t3-12');
30 INSERT INTO t2 VALUES(11,'t2-11');
31 INSERT INTO t2 VALUES(12,'t2-12');
32 INSERT INTO t1 VALUES(1, 5, 0);
33 INSERT INTO t1 VALUES(2, 11, 2);
34 INSERT INTO t1 VALUES(3, 12, 1);
40 select * from t1 left join t2 on t1.b=t2.x and t1.c=1
42 } {1 5 0 {} {} 2 11 2 {} {} 3 12 1 12 t2-12}
45 select * from t1 left join t2 on t1.b=t2.x where t1.c=1
50 select * from t1 left join t2 on t1.b=t2.x and t1.c=1
51 left join t3 on t1.b=t3.p and t1.c=2
53 } {1 5 0 {} {} {} {} 2 11 2 {} {} 11 t3-11 3 12 1 12 t2-12 {} {}}
56 select * from t1 left join t2 on t1.b=t2.x and t1.c=1
57 left join t3 on t1.b=t3.p where t1.c=2
59 } {2 11 2 {} {} 11 t3-11}
66 INSERT INTO "ab" VALUES(1,2);
67 INSERT INTO "ab" VALUES(3,NULL);
70 INSERT INTO "xy" VALUES(2,3);
71 INSERT INTO "xy" VALUES(NULL,1);
73 execsql {SELECT * FROM xy LEFT JOIN ab ON 0}
74 } {2 3 {} {} {} 1 {} {}}
76 execsql {SELECT * FROM xy LEFT JOIN ab ON 1}
77 } {2 3 1 2 2 3 3 {} {} 1 1 2 {} 1 3 {}}
79 execsql {SELECT * FROM xy LEFT JOIN ab ON NULL}
80 } {2 3 {} {} {} 1 {} {}}
82 execsql {SELECT * FROM xy LEFT JOIN ab ON 0 WHERE 0}
85 execsql {SELECT * FROM xy LEFT JOIN ab ON 1 WHERE 0}
88 execsql {SELECT * FROM xy LEFT JOIN ab ON NULL WHERE 0}
91 execsql {SELECT * FROM xy LEFT JOIN ab ON 0 WHERE 1}
92 } {2 3 {} {} {} 1 {} {}}
94 execsql {SELECT * FROM xy LEFT JOIN ab ON 1 WHERE 1}
95 } {2 3 1 2 2 3 3 {} {} 1 1 2 {} 1 3 {}}
97 execsql {SELECT * FROM xy LEFT JOIN ab ON NULL WHERE 1}
98 } {2 3 {} {} {} 1 {} {}}
100 execsql {SELECT * FROM xy LEFT JOIN ab ON 0 WHERE NULL}
103 execsql {SELECT * FROM xy LEFT JOIN ab ON 1 WHERE NULL}
106 execsql {SELECT * FROM xy LEFT JOIN ab ON NULL WHERE NULL}