| OLD | NEW |
| (Empty) |
| 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 ifcapable compound { | |
| 128 do_test join6-4.1 { | |
| 129 execsql { | |
| 130 SELECT * FROM | |
| 131 (SELECT 1 AS a, 91 AS x, 92 AS y UNION SELECT 2, 93, 94) | |
| 132 NATURAL JOIN t2 NATURAL JOIN t3 | |
| 133 } | |
| 134 } {1 91 92 3 93 5} | |
| 135 do_test join6-4.2 { | |
| 136 execsql { | |
| 137 SELECT * FROM t1 NATURAL JOIN | |
| 138 (SELECT 3 AS b, 92 AS y, 93 AS z UNION SELECT 4, 94, 95) | |
| 139 NATURAL JOIN t3 | |
| 140 } | |
| 141 } {1 91 92 3 93 5} | |
| 142 do_test join6-4.3 { | |
| 143 execsql { | |
| 144 SELECT * FROM t1 NATURAL JOIN t2 NATURAL JOIN | |
| 145 (SELECT 5 AS c, 91 AS x, 93 AS z UNION SELECT 6, 99, 95) | |
| 146 } | |
| 147 } {1 91 92 3 93 5} | |
| 148 } | |
| 149 | |
| 150 | |
| 151 | |
| 152 | |
| 153 | |
| 154 | |
| 155 | |
| 156 | |
| 157 | |
| 158 | |
| 159 | |
| 160 finish_test | |
| OLD | NEW |