# 2002 May 24

 #

 # 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 joins, including outer joins.

 #

 # $Id: join2.test,v 1.2 2005/01/21 03:12:16 danielk1977 Exp $

 set testdir [file dirname $argv0]

 source $testdir/tester.tcl

 do_test join2-1.1 {

   execsql {

     CREATE TABLE t1(a,b);

     INSERT INTO t1 VALUES(1,11);

     INSERT INTO t1 VALUES(2,22);

     INSERT INTO t1 VALUES(3,33);

     SELECT * FROM t1;

   }  

 } {1 11 2 22 3 33}

 do_test join2-1.2 {

   execsql {

     CREATE TABLE t2(b,c);

     INSERT INTO t2 VALUES(11,111);

     INSERT INTO t2 VALUES(33,333);

     INSERT INTO t2 VALUES(44,444);

     SELECT * FROM t2;

   }  

 } {11 111 33 333 44 444};

 do_test join2-1.3 {

   execsql {

     CREATE TABLE t3(c,d);

     INSERT INTO t3 VALUES(111,1111);

     INSERT INTO t3 VALUES(444,4444);

     INSERT INTO t3 VALUES(555,5555);

     SELECT * FROM t3;

   }  

 } {111 1111 444 4444 555 5555}

 do_test join2-1.4 {

   execsql {

     SELECT * FROM

       t1 NATURAL JOIN t2 NATURAL JOIN t3

   }

 } {1 11 111 1111}

 do_test join2-1.5 {

   execsql {

     SELECT * FROM

       t1 NATURAL JOIN t2 NATURAL LEFT OUTER JOIN t3

   }

 } {1 11 111 1111 3 33 333 {}}

 do_test join2-1.6 {

   execsql {

     SELECT * FROM

       t1 NATURAL LEFT OUTER JOIN t2 NATURAL JOIN t3

   }

 } {1 11 111 1111}

 ifcapable subquery {

   do_test join2-1.7 {

     execsql {

       SELECT * FROM

         t1 NATURAL LEFT OUTER JOIN (t2 NATURAL JOIN t3)

     }

   } {1 11 111 1111 2 22 {} {} 3 33 {} {}}

 }

 finish_test