# 2007 June 8

 #

 # 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.  The

 # focus of this file is testing that terms in the ON clause of

 # a LEFT OUTER JOIN are not used with indices.  See ticket #3015.

 #

 # $Id: where6.test,v 1.2 2008/04/17 19:14:02 drh Exp $

 set testdir [file dirname $argv0]

 source $testdir/tester.tcl

 # Build some test data

 #

 do_test where6-1.1 {

   execsql {

     CREATE TABLE t1(a INTEGER PRIMARY KEY,b,c);

     INSERT INTO t1 VALUES(1,3,1);

     INSERT INTO t1 VALUES(2,4,2);

     CREATE TABLE t2(x INTEGER PRIMARY KEY);

     INSERT INTO t2 VALUES(3);

     SELECT * FROM t1 LEFT JOIN t2 ON b=x AND c=1;

   }

 } {1 3 1 3 2 4 2 {}}

 do_test where6-1.2 {

   execsql {

     SELECT * FROM t1 LEFT JOIN t2 ON x=b AND c=1;

   }

 } {1 3 1 3 2 4 2 {}}

 do_test where6-1.3 {

   execsql {

     SELECT * FROM t1 LEFT JOIN t2 ON x=b AND 1=c;

   }

 } {1 3 1 3 2 4 2 {}}

 do_test where6-1.4 {

   execsql {

     SELECT * FROM t1 LEFT JOIN t2 ON b=x AND 1=c;

   }

 } {1 3 1 3 2 4 2 {}}

 ifcapable explain {

   do_test where6-1.5 {

      explain_no_trace {SELECT * FROM t1 LEFT JOIN t2 ON x=b AND 1=c}

   } [explain_no_trace {SELECT * FROM t1 LEFT JOIN t2 ON b=x AND c=1}]

   do_test where6-1.6 {

      explain_no_trace {SELECT * FROM t1 LEFT JOIN t2 ON x=b WHERE 1=c}

   } [explain_no_trace {SELECT * FROM t1 LEFT JOIN t2 ON b=x WHERE c=1}]

 }

 do_test where6-1.11 {

   execsql {

     SELECT * FROM t1 LEFT JOIN t2 ON b=x WHERE c=1;

   }

 } {1 3 1 3}

 do_test where6-1.12 {

   execsql {

     SELECT * FROM t1 LEFT JOIN t2 ON x=b WHERE c=1;

   }

 } {1 3 1 3}

 do_test where6-1.13 {

   execsql {

     SELECT * FROM t1 LEFT JOIN t2 ON b=x WHERE 1=c;

   }

 } {1 3 1 3}

 do_test where6-2.1 {

   execsql {

     CREATE INDEX i1 ON t1(c);

     SELECT * FROM t1 LEFT JOIN t2 ON b=x AND c=1;

   }

 } {1 3 1 3 2 4 2 {}}

 do_test where6-2.2 {

   execsql {

     SELECT * FROM t1 LEFT JOIN t2 ON x=b AND c=1;

   }

 } {1 3 1 3 2 4 2 {}}

 do_test where6-2.3 {

   execsql {

     SELECT * FROM t1 LEFT JOIN t2 ON x=b AND 1=c;

   }

 } {1 3 1 3 2 4 2 {}}

 do_test where6-2.4 {

   execsql {

     SELECT * FROM t1 LEFT JOIN t2 ON b=x AND 1=c;

   }

 } {1 3 1 3 2 4 2 {}}

 ifcapable explain {

   do_test where6-2.5 {

      explain_no_trace {SELECT * FROM t1 LEFT JOIN t2 ON x=b AND 1=c}

   } [explain_no_trace {SELECT * FROM t1 LEFT JOIN t2 ON b=x AND c=1}]

   do_test where6-2.6 {

      explain_no_trace {SELECT * FROM t1 LEFT JOIN t2 ON x=b WHERE 1=c}

   } [explain_no_trace {SELECT * FROM t1 LEFT JOIN t2 ON b=x WHERE c=1}]

 }

 do_test where6-2.11 {

   execsql {

     SELECT * FROM t1 LEFT JOIN t2 ON b=x WHERE c=1;

   }

 } {1 3 1 3}

 do_test where6-2.12 {

   execsql {

     SELECT * FROM t1 LEFT JOIN t2 ON x=b WHERE c=1;

   }

 } {1 3 1 3}

 do_test where6-2.13 {

   execsql {

     SELECT * FROM t1 LEFT JOIN t2 ON x=b WHERE 1=c;

   }

 } {1 3 1 3}

 do_test where6-2.14 {

   execsql {

     SELECT * FROM t1 LEFT JOIN t2 ON b=x WHERE 1=c;

   }

 } {1 3 1 3}

 finish_test