# 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 left outer joins containing WHERE

# clauses that restrict the scope of the left term of the join.

#

# $Id: join4.test,v 1.4 2005/03/29 03:11:00 danielk1977 Exp $

set testdir [file dirname $argv0]

source $testdir/tester.tcl

ifcapable tempdb {

  do_test join4-1.1 {

    execsql {

      create temp table t1(a integer, b varchar(10));

      insert into t1 values(1,'one');

      insert into t1 values(2,'two');

      insert into t1 values(3,'three');

      insert into t1 values(4,'four');

      create temp table t2(x integer, y varchar(10), z varchar(10));

      insert into t2 values(2,'niban','ok');

      insert into t2 values(4,'yonban','err');

    }

    execsql {

      select * from t1 left outer join t2 on t1.a=t2.x where t2.z='ok'

    }

  } {2 two 2 niban ok}

} else {

  do_test join4-1.1 {

    execsql {

      create table t1(a integer, b varchar(10));

      insert into t1 values(1,'one');

      insert into t1 values(2,'two');

      insert into t1 values(3,'three');

      insert into t1 values(4,'four');

      create table t2(x integer, y varchar(10), z varchar(10));

      insert into t2 values(2,'niban','ok');

      insert into t2 values(4,'yonban','err');

    }

    execsql {

      select * from t1 left outer join t2 on t1.a=t2.x where t2.z='ok'

    }

  } {2 two 2 niban ok}

}

do_test join4-1.2 {

  execsql {

    select * from t1 left outer join t2 on t1.a=t2.x and t2.z='ok'

  }

} {1 one {} {} {} 2 two 2 niban ok 3 three {} {} {} 4 four {} {} {}}

do_test join4-1.3 {

  execsql {

    create index i2 on t2(z);

  }

  execsql {

    select * from t1 left outer join t2 on t1.a=t2.x where t2.z='ok'

  }

} {2 two 2 niban ok}

do_test join4-1.4 {

  execsql {

    select * from t1 left outer join t2 on t1.a=t2.x and t2.z='ok'

  }

} {1 one {} {} {} 2 two 2 niban ok 3 three {} {} {} 4 four {} {} {}}

do_test join4-1.5 {

  execsql {

    select * from t1 left outer join t2 on t1.a=t2.x where t2.z>='ok'

  }

} {2 two 2 niban ok}

do_test join4-1.4 {

  execsql {

    select * from t1 left outer join t2 on t1.a=t2.x and t2.z>='ok'

  }

} {1 one {} {} {} 2 two 2 niban ok 3 three {} {} {} 4 four {} {} {}}

ifcapable subquery {

  do_test join4-1.6 {

    execsql {

      select * from t1 left outer join t2 on t1.a=t2.x where t2.z IN ('ok')

    }

  } {2 two 2 niban ok}

  do_test join4-1.7 {

    execsql {

      select * from t1 left outer join t2 on t1.a=t2.x and t2.z IN ('ok')

    }

  } {1 one {} {} {} 2 two 2 niban ok 3 three {} {} {} 4 four {} {} {}}

}

finish_test