# 2005 September 19 # # The author disclaims copyright to this source code. In place of # a legal notice, here is a blessing: # # May you do good and not evil. # May you find forgiveness for yourself and forgive others. # May you share freely, never taking more than you give. # #*********************************************************************** # This file implements regression tests for SQLite library. # # This file implements tests for left outer joins containing ON # clauses that restrict the scope of the left term of the join. # # $Id: join5.test,v 1.2 2007/06/08 00:20:48 drh Exp $ set testdir [file dirname $argv0] source $testdir/tester.tcl do_test join5-1.1 { execsql { BEGIN; CREATE TABLE t1(a integer primary key, b integer, c integer); CREATE TABLE t2(x integer primary key, y); CREATE TABLE t3(p integer primary key, q); INSERT INTO t3 VALUES(11,'t3-11'); INSERT INTO t3 VALUES(12,'t3-12'); INSERT INTO t2 VALUES(11,'t2-11'); INSERT INTO t2 VALUES(12,'t2-12'); INSERT INTO t1 VALUES(1, 5, 0); INSERT INTO t1 VALUES(2, 11, 2); INSERT INTO t1 VALUES(3, 12, 1); COMMIT; } } {} do_test join5-1.2 { execsql { select * from t1 left join t2 on t1.b=t2.x and t1.c=1 } } {1 5 0 {} {} 2 11 2 {} {} 3 12 1 12 t2-12} do_test join5-1.3 { execsql { select * from t1 left join t2 on t1.b=t2.x where t1.c=1 } } {3 12 1 12 t2-12} do_test join5-1.4 { execsql { select * from t1 left join t2 on t1.b=t2.x and t1.c=1 left join t3 on t1.b=t3.p and t1.c=2 } } {1 5 0 {} {} {} {} 2 11 2 {} {} 11 t3-11 3 12 1 12 t2-12 {} {}} do_test join5-1.5 { execsql { select * from t1 left join t2 on t1.b=t2.x and t1.c=1 left join t3 on t1.b=t3.p where t1.c=2 } } {2 11 2 {} {} 11 t3-11} # Ticket #2403 # do_test join5-2.1 { execsql { CREATE TABLE ab(a,b); INSERT INTO "ab" VALUES(1,2); INSERT INTO "ab" VALUES(3,NULL); CREATE TABLE xy(x,y); INSERT INTO "xy" VALUES(2,3); INSERT INTO "xy" VALUES(NULL,1); } execsql {SELECT * FROM xy LEFT JOIN ab ON 0} } {2 3 {} {} {} 1 {} {}} do_test join5-2.2 { execsql {SELECT * FROM xy LEFT JOIN ab ON 1} } {2 3 1 2 2 3 3 {} {} 1 1 2 {} 1 3 {}} do_test join5-2.3 { execsql {SELECT * FROM xy LEFT JOIN ab ON NULL} } {2 3 {} {} {} 1 {} {}} do_test join5-2.4 { execsql {SELECT * FROM xy LEFT JOIN ab ON 0 WHERE 0} } {} do_test join5-2.5 { execsql {SELECT * FROM xy LEFT JOIN ab ON 1 WHERE 0} } {} do_test join5-2.6 { execsql {SELECT * FROM xy LEFT JOIN ab ON NULL WHERE 0} } {} do_test join5-2.7 { execsql {SELECT * FROM xy LEFT JOIN ab ON 0 WHERE 1} } {2 3 {} {} {} 1 {} {}} do_test join5-2.8 { execsql {SELECT * FROM xy LEFT JOIN ab ON 1 WHERE 1} } {2 3 1 2 2 3 3 {} {} 1 1 2 {} 1 3 {}} do_test join5-2.9 { execsql {SELECT * FROM xy LEFT JOIN ab ON NULL WHERE 1} } {2 3 {} {} {} 1 {} {}} do_test join5-2.10 { execsql {SELECT * FROM xy LEFT JOIN ab ON 0 WHERE NULL} } {} do_test join5-2.11 { execsql {SELECT * FROM xy LEFT JOIN ab ON 1 WHERE NULL} } {} do_test join5-2.12 { execsql {SELECT * FROM xy LEFT JOIN ab ON NULL WHERE NULL} } {} finish_test