# 2008 August 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 script is correct code generation of aliased result-set
# values.  See ticket #3343.
#
# $Id: alias.test,v 1.3 2009/04/23 13:22:44 drh Exp $
#
set testdir [file dirname $argv0]
source $testdir/tester.tcl

# Aliases are currently evaluated twice.  We might try to change this
# in the future.  But not now.
return

# A procedure to return a sequence of increasing integers.
#
namespace eval ::seq {
  variable counter 0
  proc value {args} {
    variable counter
    incr counter
    return $counter
  }
  proc reset {} {
    variable counter
    set counter 0
  }
}


do_test alias-1.1 {
  db function sequence ::seq::value
  db eval {
    CREATE TABLE t1(x);
    INSERT INTO t1 VALUES(9);
    INSERT INTO t1 VALUES(8);
    INSERT INTO t1 VALUES(7);
    SELECT x, sequence() FROM t1;
  }
} {9 1 8 2 7 3}
do_test alias-1.2 {
  ::seq::reset
  db eval {
    SELECT x, sequence() AS y FROM t1 WHERE y>0
  }
} {9 1 8 2 7 3}
do_test alias-1.3 {
  ::seq::reset
  db eval {
    SELECT x, sequence() AS y FROM t1 WHERE y>0 AND y0 AND y0 AND y