wasCSharpSQLite – Blame information for rev 7

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1 office 1 # 2009 December 9
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 N-way joins (N>2) which make
14 # use of USING or NATURAL JOIN. For such joins, the USING and
15 # NATURAL JOIN processing needs to search all tables to the left
16 # of the join looking for a match. See ticket [f74beaabde]
17 # for additional information.
18 #
19  
20 set testdir [file dirname $argv0]
21 source $testdir/tester.tcl
22  
23  
24 # The problem as initially reported on the mailing list:
25 #
26 do_test join6-1.1 {
27 execsql {
28 CREATE TABLE t1(a);
29 CREATE TABLE t2(a);
30 CREATE TABLE t3(a,b);
31 INSERT INTO t1 VALUES(1);
32 INSERT INTO t3 VALUES(1,2);
33  
34 SELECT * FROM t1 LEFT JOIN t2 USING(a) LEFT JOIN t3 USING(a);
35 }
36 } {1 2}
37 do_test join6-1.2 {
38 execsql {
39 SELECT t1.a, t3.b
40 FROM t1 LEFT JOIN t2 ON t1.a=t2.a LEFT JOIN t3 ON t2.a=t3.a;
41 }
42 } {1 {}}
43 do_test join6-1.3 {
44 execsql {
45 SELECT t1.a, t3.b
46 FROM t1 LEFT JOIN t2 ON t1.a=t2.a LEFT JOIN t3 ON t1.a=t3.a;
47 }
48 } {1 2}
49  
50  
51 do_test join6-2.1 {
52 execsql {
53 DROP TABLE t1;
54 DROP TABLE t2;
55 DROP TABLE t3;
56  
57 CREATE TABLE t1(x,y);
58 CREATE TABLE t2(y,z);
59 CREATE TABLE t3(x,z);
60  
61 INSERT INTO t1 VALUES(1,2);
62 INSERT INTO t1 VALUES(3,4);
63  
64 INSERT INTO t2 VALUES(2,3);
65 INSERT INTO t2 VALUES(4,5);
66  
67 INSERT INTO t3 VALUES(1,3);
68 INSERT INTO t3 VALUES(3,5);
69  
70 SELECT * FROM t1 JOIN t2 USING (y) JOIN t3 USING(x);
71 }
72 } {1 2 3 3 3 4 5 5}
73 do_test join6-2.2 {
74 execsql {
75 SELECT * FROM t1 NATURAL JOIN t2 NATURAL JOIN t3;
76 }
77 } {1 2 3 3 4 5}
78  
79  
80 do_test join6-3.1 {
81 execsql {
82 DROP TABLE t1;
83 DROP TABLE t2;
84 DROP TABLE t3;
85  
86 CREATE TABLE t1(a,x,y);
87 INSERT INTO t1 VALUES(1,91,92);
88 INSERT INTO t1 VALUES(2,93,94);
89  
90 CREATE TABLE t2(b,y,z);
91 INSERT INTO t2 VALUES(3,92,93);
92 INSERT INTO t2 VALUES(4,94,95);
93  
94 CREATE TABLE t3(c,x,z);
95 INSERT INTO t3 VALUES(5,91,93);
96 INSERT INTO t3 VALUES(6,99,95);
97  
98 SELECT * FROM t1 NATURAL JOIN t2 NATURAL JOIN t3;
99 }
100 } {1 91 92 3 93 5}
101 do_test join6-3.2 {
102 execsql {
103 SELECT * FROM t1 JOIN t2 NATURAL JOIN t3;
104 }
105 } {1 91 92 3 92 93 5}
106 do_test join6-3.3 {
107 execsql {
108 SELECT * FROM t1 JOIN t2 USING(y) NATURAL JOIN t3;
109 }
110 } {1 91 92 3 93 5}
111 do_test join6-3.4 {
112 execsql {
113 SELECT * FROM t1 NATURAL JOIN t2 JOIN t3 USING(x,z);
114 }
115 } {1 91 92 3 93 5}
116 do_test join6-3.5 {
117 execsql {
118 SELECT * FROM t1 NATURAL JOIN t2 JOIN t3 USING(x);
119 }
120 } {1 91 92 3 93 5 93}
121 do_test join6-3.6 {
122 execsql {
123 SELECT * FROM t1 NATURAL JOIN t2 JOIN t3 USING(z);
124 }
125 } {1 91 92 3 93 5 91 2 93 94 4 95 6 99}
126  
127 do_test join6-4.1 {
128 execsql {
129 SELECT * FROM
130 (SELECT 1 AS a, 91 AS x, 92 AS y UNION SELECT 2, 93, 94)
131 NATURAL JOIN t2 NATURAL JOIN t3
132 }
133 } {1 91 92 3 93 5}
134 do_test join6-4.2 {
135 execsql {
136 SELECT * FROM t1 NATURAL JOIN
137 (SELECT 3 AS b, 92 AS y, 93 AS z UNION SELECT 4, 94, 95)
138 NATURAL JOIN t3
139 }
140 } {1 91 92 3 93 5}
141 do_test join6-4.3 {
142 execsql {
143 SELECT * FROM t1 NATURAL JOIN t2 NATURAL JOIN
144 (SELECT 5 AS c, 91 AS x, 93 AS z UNION SELECT 6, 99, 95)
145 }
146 } {1 91 92 3 93 5}
147  
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157  
158 finish_test