**    May you find forgiveness for yourself and forgive others.
**    May you share freely, never taking more than you give.
**
*************************************************************************
** This file contains routines used for analyzing expressions and
** for generating VDBE code that evaluates expressions in SQLite.
**
** $Id: expr.c,v 1.381 2008/06/27 00:52:45 drh Exp $
*/
#include "sqliteInt.h"
#include <ctype.h>

/*
** Return the 'affinity' of the expression pExpr if any.
**
................................................................................
    pParse->aTempReg[i] = pParse->aTempReg[i+1];
  }
  pParse->nTempReg--;
  return r;
}
void sqlite3ReleaseTempReg(Parse *pParse, int iReg){
  if( iReg && pParse->nTempReg<ArraySize(pParse->aTempReg) ){

    pParse->aTempReg[pParse->nTempReg++] = iReg;
  }
}

/*
** Allocate or deallocate a block of nReg consecutive registers
*/

**    May you find forgiveness for yourself and forgive others.
**    May you share freely, never taking more than you give.
**
*************************************************************************
** This file contains routines used for analyzing expressions and
** for generating VDBE code that evaluates expressions in SQLite.
**
** $Id: expr.c,v 1.382 2008/07/04 09:15:11 danielk1977 Exp $
*/
#include "sqliteInt.h"
#include <ctype.h>

/*
** Return the 'affinity' of the expression pExpr if any.
**
................................................................................
    pParse->aTempReg[i] = pParse->aTempReg[i+1];
  }
  pParse->nTempReg--;
  return r;
}
void sqlite3ReleaseTempReg(Parse *pParse, int iReg){
  if( iReg && pParse->nTempReg<ArraySize(pParse->aTempReg) ){
    sqlite3ExprWritableRegister(pParse, iReg, iReg);
    pParse->aTempReg[pParse->nTempReg++] = iReg;
  }
}

/*
** Allocate or deallocate a block of nReg consecutive registers
*/

# 2008 July 4
#
# 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. 
# Specifically, it tests that bug #3201 has been fixed.
#
# $Id: tkt3201.test,v 1.1 2008/07/04 09:15:11 danielk1977 Exp $

set testdir [file dirname $argv0]
source $testdir/tester.tcl

do_test tkt3201-1 {
  execsql {
    CREATE TABLE t1(a INTEGER PRIMARY KEY, b TEXT);
    INSERT INTO t1 VALUES(1, 'one');
    INSERT INTO t1 VALUES(2, 'two');
  }
} {}

do_test tkt3201-2 {
  execsql {
    SELECT l.a, r.a FROM t1 AS l, t1 AS r WHERE l.a < r.a;
  }
} {1 2}

do_test tkt3201-3 {
  execsql {
    CREATE TABLE t2(a INTEGER PRIMARY KEY, b TEXT);
    INSERT INTO t2 VALUES(2, 'two');
  }
  execsql {
    SELECT l.a, r.a FROM t1 AS l, t2 AS r WHERE l.a < r.a;
  }
} {1 2}

do_test tkt3201-4 {
  execsql {
    DELETE FROM t1 WHERE a = 2;
  }
  execsql {
    SELECT l.a, r.a FROM t1 AS l, t2 AS r WHERE l.a < r.a;
  }
} {1 2}

do_test tkt3201-5 {
  execsql {
    DELETE FROM t1 WHERE a = 2;
  }
  execsql {
    SELECT t1.a, t1.b, t2.a, t2.b FROM t1, t2;
  }
} {1 one 2 two}

do_test tkt3201-6 {
  execsql {
    CREATE TABLE t3(c INTEGER PRIMARY KEY, d TEXT);
    INSERT INTO t3 VALUES(2, 'two');
  }
  execsql { SELECT a, b, c, d FROM t1, t3 }
} {1 one 2 two}

do_test tkt3201-7 {
  explain { SELECT a, b, c, d FROM t1, t3 WHERE a < c }
  execsql { SELECT a, b, c, d FROM t1, t3 WHERE a < c }
} {1 one 2 two}

finish_test