1# 2005 September 19 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 left outer joins containing ON 14# clauses that restrict the scope of the left term of the join. 15# 16# $Id: join5.test,v 1.2 2007/06/08 00:20:48 drh Exp $ 17 18set testdir [file dirname $argv0] 19source $testdir/tester.tcl 20 21 22do_test join5-1.1 { 23 execsql { 24 BEGIN; 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); 35 COMMIT; 36 } 37} {} 38do_test join5-1.2 { 39 execsql { 40 select * from t1 left join t2 on t1.b=t2.x and t1.c=1 41 } 42} {1 5 0 {} {} 2 11 2 {} {} 3 12 1 12 t2-12} 43do_test join5-1.3 { 44 execsql { 45 select * from t1 left join t2 on t1.b=t2.x where t1.c=1 46 } 47} {3 12 1 12 t2-12} 48do_test join5-1.4 { 49 execsql { 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 52 } 53} {1 5 0 {} {} {} {} 2 11 2 {} {} 11 t3-11 3 12 1 12 t2-12 {} {}} 54do_test join5-1.5 { 55 execsql { 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 58 } 59} {2 11 2 {} {} 11 t3-11} 60 61# Ticket #2403 62# 63do_test join5-2.1 { 64 execsql { 65 CREATE TABLE ab(a,b); 66 INSERT INTO "ab" VALUES(1,2); 67 INSERT INTO "ab" VALUES(3,NULL); 68 69 CREATE TABLE xy(x,y); 70 INSERT INTO "xy" VALUES(2,3); 71 INSERT INTO "xy" VALUES(NULL,1); 72 } 73 execsql {SELECT * FROM xy LEFT JOIN ab ON 0} 74} {2 3 {} {} {} 1 {} {}} 75do_test join5-2.2 { 76 execsql {SELECT * FROM xy LEFT JOIN ab ON 1} 77} {2 3 1 2 2 3 3 {} {} 1 1 2 {} 1 3 {}} 78do_test join5-2.3 { 79 execsql {SELECT * FROM xy LEFT JOIN ab ON NULL} 80} {2 3 {} {} {} 1 {} {}} 81do_test join5-2.4 { 82 execsql {SELECT * FROM xy LEFT JOIN ab ON 0 WHERE 0} 83} {} 84do_test join5-2.5 { 85 execsql {SELECT * FROM xy LEFT JOIN ab ON 1 WHERE 0} 86} {} 87do_test join5-2.6 { 88 execsql {SELECT * FROM xy LEFT JOIN ab ON NULL WHERE 0} 89} {} 90do_test join5-2.7 { 91 execsql {SELECT * FROM xy LEFT JOIN ab ON 0 WHERE 1} 92} {2 3 {} {} {} 1 {} {}} 93do_test join5-2.8 { 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 {}} 96do_test join5-2.9 { 97 execsql {SELECT * FROM xy LEFT JOIN ab ON NULL WHERE 1} 98} {2 3 {} {} {} 1 {} {}} 99do_test join5-2.10 { 100 execsql {SELECT * FROM xy LEFT JOIN ab ON 0 WHERE NULL} 101} {} 102do_test join5-2.11 { 103 execsql {SELECT * FROM xy LEFT JOIN ab ON 1 WHERE NULL} 104} {} 105do_test join5-2.12 { 106 execsql {SELECT * FROM xy LEFT JOIN ab ON NULL WHERE NULL} 107} {} 108 109# Ticket https://www.sqlite.org/src/tktview/6f2222d550f5b0ee7ed37601 110# Incorrect output on a LEFT JOIN. 111# 112do_execsql_test join5-3.1 { 113 DROP TABLE IF EXISTS t1; 114 DROP TABLE IF EXISTS t2; 115 DROP TABLE IF EXISTS t3; 116 CREATE TABLE x1(a); 117 INSERT INTO x1 VALUES(1); 118 CREATE TABLE x2(b NOT NULL); 119 CREATE TABLE x3(c, d); 120 INSERT INTO x3 VALUES('a', NULL); 121 INSERT INTO x3 VALUES('b', NULL); 122 INSERT INTO x3 VALUES('c', NULL); 123 SELECT * FROM x1 LEFT JOIN x2 LEFT JOIN x3 ON x3.d = x2.b; 124} {1 {} {} {}} 125do_execsql_test join5-3.2 { 126 DROP TABLE IF EXISTS t1; 127 DROP TABLE IF EXISTS t2; 128 DROP TABLE IF EXISTS t3; 129 DROP TABLE IF EXISTS t4; 130 DROP TABLE IF EXISTS t5; 131 CREATE TABLE t1(x text NOT NULL, y text); 132 CREATE TABLE t2(u text NOT NULL, x text NOT NULL); 133 CREATE TABLE t3(w text NOT NULL, v text); 134 CREATE TABLE t4(w text NOT NULL, z text NOT NULL); 135 CREATE TABLE t5(z text NOT NULL, m text); 136 INSERT INTO t1 VALUES('f6d7661f-4efe-4c90-87b5-858e61cd178b',NULL); 137 INSERT INTO t1 VALUES('f6ea82c3-2cad-45ce-ae8f-3ddca4fb2f48',NULL); 138 INSERT INTO t1 VALUES('f6f47499-ecb4-474b-9a02-35be73c235e5',NULL); 139 INSERT INTO t1 VALUES('56f47499-ecb4-474b-9a02-35be73c235e5',NULL); 140 INSERT INTO t3 VALUES('007f2033-cb20-494c-b135-a1e4eb66130c', 141 'f6d7661f-4efe-4c90-87b5-858e61cd178b'); 142 SELECT * 143 FROM t3 144 INNER JOIN t1 ON t1.x= t3.v AND t1.y IS NULL 145 LEFT JOIN t4 ON t4.w = t3.w 146 LEFT JOIN t5 ON t5.z = t4.z 147 LEFT JOIN t2 ON t2.u = t5.m 148 LEFT JOIN t1 xyz ON xyz.y = t2.x; 149} {007f2033-cb20-494c-b135-a1e4eb66130c f6d7661f-4efe-4c90-87b5-858e61cd178b f6d7661f-4efe-4c90-87b5-858e61cd178b {} {} {} {} {} {} {} {} {}} 150do_execsql_test join5-3.3 { 151 DROP TABLE IF EXISTS x1; 152 DROP TABLE IF EXISTS x2; 153 DROP TABLE IF EXISTS x3; 154 CREATE TABLE x1(a); 155 INSERT INTO x1 VALUES(1); 156 CREATE TABLE x2(b NOT NULL); 157 CREATE TABLE x3(c, d); 158 INSERT INTO x3 VALUES('a', NULL); 159 INSERT INTO x3 VALUES('b', NULL); 160 INSERT INTO x3 VALUES('c', NULL); 161 SELECT * FROM x1 LEFT JOIN x2 JOIN x3 WHERE x3.d = x2.b; 162} {} 163 164# Ticket https://www.sqlite.org/src/tktview/c2a19d81652f40568c770c43 on 165# 2015-08-20. LEFT JOIN and the push-down optimization. 166# 167do_execsql_test join6-4.1 { 168 SELECT * 169 FROM ( 170 SELECT 'apple' fruit 171 UNION ALL SELECT 'banana' 172 ) a 173 JOIN ( 174 SELECT 'apple' fruit 175 UNION ALL SELECT 'banana' 176 ) b ON a.fruit=b.fruit 177 LEFT JOIN ( 178 SELECT 1 isyellow 179 ) c ON b.fruit='banana'; 180} {apple apple {} banana banana 1} 181do_execsql_test join6-4.2 { 182 SELECT * 183 FROM (SELECT 'apple' fruit UNION ALL SELECT 'banana') 184 LEFT JOIN (SELECT 1) ON fruit='banana'; 185} {apple {} banana 1} 186 187finish_test 188