# 2005 July 28

 #

 # 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 the use of indices in WHERE clauses

 # when the WHERE clause contains the BETWEEN operator.

 #

 # $Id: between.test,v 1.2 2006/01/17 09:35:02 danielk1977 Exp $

 set testdir [file dirname $argv0]

 source $testdir/tester.tcl

 # Build some test data

 #

 do_test between-1.0 {

   execsql {

     BEGIN;

     CREATE TABLE t1(w int, x int, y int, z int);

   }

   for {set i 1} {$i<=100} {incr i} {

     set w $i

     set x [expr {int(log($i)/log(2))}]

     set y [expr {$i*$i + 2*$i + 1}]

     set z [expr {$x+$y}]

     ifcapable tclvar {

       # Random unplanned test of the $varname variable syntax.

       execsql {INSERT INTO t1 VALUES($::w,$::x,$::y,$::z)}

     } else {

       # If the $varname syntax is not available, use the regular variable

       # declaration syntax.

       execsql {INSERT INTO t1 VALUES(:w,:x,:y,:z)}

     }

   }

   execsql {

     CREATE UNIQUE INDEX i1w ON t1(w);

     CREATE INDEX i1xy ON t1(x,y);

     CREATE INDEX i1zyx ON t1(z,y,x);

     COMMIT;

   }

 } {}

 # This procedure executes the SQL.  Then it appends to the result the

 # "sort" or "nosort" keyword depending on whether or not any sorting

 # is done.  Then it appends the ::sqlite_query_plan variable.

 #

 proc queryplan {sql} {

   set ::sqlite_sort_count 0

   set data [execsql $sql]

   if {$::sqlite_sort_count} {set x sort} {set x nosort}

   lappend data $x

   return [concat $data $::sqlite_query_plan]

 }

 do_test between-1.1.1 {

   queryplan {

     SELECT * FROM t1 WHERE w BETWEEN 5 AND 6 ORDER BY +w

   }

 } {5 2 36 38 6 2 49 51 sort t1 i1w}

 do_test between-1.1.2 {

   queryplan {

     SELECT * FROM t1 WHERE +w BETWEEN 5 AND 6 ORDER BY +w

   }

 } {5 2 36 38 6 2 49 51 sort t1 {}}

 do_test between-1.2.1 {

   queryplan {

     SELECT * FROM t1 WHERE w BETWEEN 5 AND 65-y ORDER BY +w

   }

 } {5 2 36 38 6 2 49 51 sort t1 i1w}

 do_test between-1.2.2 {

   queryplan {

     SELECT * FROM t1 WHERE +w BETWEEN 5 AND 65-y ORDER BY +w

   }

 } {5 2 36 38 6 2 49 51 sort t1 {}}

 do_test between-1.3.1 {

   queryplan {

     SELECT * FROM t1 WHERE w BETWEEN 41-y AND 6 ORDER BY +w

   }

 } {5 2 36 38 6 2 49 51 sort t1 i1w}

 do_test between-1.3.2 {

   queryplan {

     SELECT * FROM t1 WHERE +w BETWEEN 41-y AND 6 ORDER BY +w

   }

 } {5 2 36 38 6 2 49 51 sort t1 {}}

 do_test between-1.4 {

   queryplan {

     SELECT * FROM t1 WHERE w BETWEEN 41-y AND 65-y ORDER BY +w

   }

 } {5 2 36 38 6 2 49 51 sort t1 {}}

 do_test between-1.5.1 {

   queryplan {

     SELECT * FROM t1 WHERE 26 BETWEEN y AND z ORDER BY +w

   }

 } {4 2 25 27 sort t1 i1zyx}

 do_test between-1.5.2 {

   queryplan {

     SELECT * FROM t1 WHERE 26 BETWEEN +y AND z ORDER BY +w

   }

 } {4 2 25 27 sort t1 i1zyx}

 do_test between-1.5.3 {

   queryplan {

     SELECT * FROM t1 WHERE 26 BETWEEN y AND +z ORDER BY +w

   }

 } {4 2 25 27 sort t1 {}}

 finish_test