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