SQLite

**    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 1.288 2007/05/09 11:37:23 danielk1977 Exp $
*/
#include "sqliteInt.h"
#include <ctype.h>

/*
** Return the 'affinity' of the expression pExpr if any.
**

      }
      if( !sqlite3MallocFailed() ){
        assert( pParse->apVarExpr!=0 );
        pParse->apVarExpr[pParse->nVarExpr++] = pExpr;
      }
    }
  } 
  if( !pParse->nErr && pParse->nVar>SQLITE_MAX_VARIABLE_NUMBER ){
    sqlite3ErrorMsg(pParse, "too many SQL variables");
  }
}

/*
** Recursively delete an expression tree.
*/
void sqlite3ExprDelete(Expr *p){
  if( p==0 ) return;

** 
** This file contains code used for testing the SQLite system.
** None of the code in this file goes into a deliverable build.
** 
** The focus of this file is providing the TCL testing layer
** access to compile-time constants.
**
** $Id: test_config.c,v 1.3 2007/05/09 11:37:23 danielk1977 Exp $
*/
#include "sqliteInt.h"
#include "tcl.h"
#include "os.h"
#include <stdlib.h>
#include <string.h>

           (char*)&sqlite_default_file_format, TCL_LINK_INT|TCL_LINK_READ_ONLY);
  }
  {
    static int sqlite_max_like_pattern = SQLITE_MAX_LIKE_PATTERN_LENGTH;
    Tcl_LinkVar(interp, "SQLITE_MAX_LIKE_PATTERN_LENGTH",
           (char*)&sqlite_max_like_pattern, TCL_LINK_INT|TCL_LINK_READ_ONLY);
  }
  {
    static int sqlite_max_attached = SQLITE_MAX_ATTACHED;
    Tcl_LinkVar(interp, "SQLITE_MAX_ATTACHED",
           (char*)&sqlite_max_attached, TCL_LINK_INT|TCL_LINK_READ_ONLY);
  }
}


/*
** Register commands with the TCL interpreter.
*/
int Sqliteconfig_Init(Tcl_Interp *interp){
  set_options(interp);
  return TCL_OK;
}

# 2003 September 6
#
# 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 testing the sqlite_bind API.
#
# $Id: bind.test,v 1.39 2007/05/09 11:37:23 danielk1977 Exp $
#

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

proc sqlite_step {stmt N VALS COLS} {
  upvar VALS vals

  ]
  sqlite3_bind_parameter_count $VM
} {999}
catch {sqlite3_finalize $VM}
do_test bind-9.4 {
  set VM [
    sqlite3_prepare $DB {
      INSERT INTO t2(a,b,c,d) VALUES(?1,?997,?,?)
    } -1 TAIL
  ]
  sqlite3_bind_parameter_count $VM
} {999}
do_test bind-9.5 {
  sqlite3_bind_int $VM 1 1
  sqlite3_bind_int $VM 997 999
  sqlite3_bind_int $VM 998 1000
  sqlite3_bind_int $VM 999 1001
  sqlite3_step $VM
} SQLITE_DONE
do_test bind-9.6 {
  sqlite3_finalize $VM
} SQLITE_OK
do_test bind-9.7 {
  execsql {SELECT * FROM t2}

#    May you share freely, never taking more than you give.
#
#***********************************************************************
#
# This file contains tests to verify that the limits defined in
# sqlite source file limits.h are enforced.
#
# $Id: sqllimits1.test,v 1.5 2007/05/09 11:37:23 danielk1977 Exp $

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

# Test organization:
#
#     sqllimits-1.*:  SQLITE_MAX_LENGTH
#     sqllimits-2.*:  SQLITE_MAX_SQL_LENGTH
#     sqllimits-3.*:  SQLITE_MAX_PAGE_COUNT
#     sqllimits-4.*:  SQLITE_MAX_COLUMN
#

#


#     sqllimits-7.*:   SQLITE_MAX_FUNCTION_ARG  
#     sqllimits-8.*:   SQLITE_MAX_ATTACHED
#     sqllimits-9.*:   SQLITE_MAX_VARIABLE_NUMBER
#     sqllimits-10.*:  SQLITE_MAX_PAGE_SIZE
#     sqllimits-11.*:  SQLITE_MAX_LIKE_PATTERN_LENGTH
#
# Todo:
#
#     sqllimits-5.*:   SQLITE_MAX_EXPR_LENGTH           (sqlite todo)
#     sqllimits-6.*:   SQLITE_MAX_VDBE_OP               (sqlite todo)
#

#--------------------------------------------------------------------
# Test cases sqllimits-1.* test that the SQLITE_MAX_LENGTH limit
# is enforced.
#
do_test sqllimits-1.1 {

} {1 {too many columns in result set}}

#--------------------------------------------------------------------
# These tests - sqllimits-5.* - test that the SQLITE_MAX_EXPR_LENGTH
# limit is enforced. The limit refers to the number of terms in 
# the expression.
#
# TODO

#--------------------------------------------------------------------
# Test cases sqllimits-6.* test that the SQLITE_MAX_VDBE_OP
# limit works as expected. The limit refers to the number of opcodes
# in a single VDBE program.
#
# TODO

#--------------------------------------------------------------------
# Test the SQLITE_MAX_FUNCTION_ARG limit works. Test case names
# match the pattern "sqllimits-7.*".
#
do_test sqllimits-1.7.1 {
  set max $::SQLITE_MAX_FUNCTION_ARG
  set vals [list]
  for {set i 0} {$i < $SQLITE_MAX_FUNCTION_ARG} {incr i} {
    lappend vals $i
  }
  catchsql "SELECT max([join $vals ,])"
} "0 [expr {$::SQLITE_MAX_FUNCTION_ARG - 1}]"
do_test sqllimits-1.7.2 {
  set max $::SQLITE_MAX_FUNCTION_ARG
  set vals [list]
  for {set i 0} {$i <= $SQLITE_MAX_FUNCTION_ARG} {incr i} {
    lappend vals $i
  }
  catchsql "SELECT max([join $vals ,])"
} {1 {too many arguments on function max}}

# Test that it is SQLite, and not the implementation of the
# user function that is throwing the error.
proc myfunc {args} {error "I don't like to be called!"}
do_test sqllimits-1.7.2 {
  db function myfunc myfunc
  set max $::SQLITE_MAX_FUNCTION_ARG
  set vals [list]
  for {set i 0} {$i <= $SQLITE_MAX_FUNCTION_ARG} {incr i} {
    lappend vals $i
  }
  catchsql "SELECT myfunc([join $vals ,])"
} {1 {too many arguments on function myfunc}}

#--------------------------------------------------------------------
# Test cases sqllimits-8.*: Test the SQLITE_MAX_ATTACHED limit.
#
# TODO
do_test sqllimits-1.8.1 {
  set max $::SQLITE_MAX_ATTACHED
  for {set i 0} {$i < ($max)} {incr i} {
    execsql "ATTACH 'test${i}.db' AS aux${i}"
  }
  catchsql "ATTACH 'test${i}.db' AS aux${i}"
} "1 {too many attached databases - max $::SQLITE_MAX_ATTACHED}"
do_test sqllimits-1.8.2 {
  set max $::SQLITE_MAX_ATTACHED
  for {set i 0} {$i < ($max)} {incr i} {
    execsql "DETACH aux${i}"
  }
} {}

#--------------------------------------------------------------------
# Test cases sqllimits-9.*: Check that the SQLITE_MAX_VARIABLE_NUMBER 
# limit works.
#
do_test sqllimits-1.9.1 {
  set max $::SQLITE_MAX_VARIABLE_NUMBER
  catchsql "SELECT ?[expr {$max+1}] FROM t1"
} "1 {variable number must be between ?1 and ?$::SQLITE_MAX_VARIABLE_NUMBER}"
do_test sqllimits-1.9.2 {
  set max $::SQLITE_MAX_VARIABLE_NUMBER
  set vals [list]
  for {set i 0} {$i < ($max+3)} {incr i} {
    lappend vals ?
  }
  catchsql "SELECT [join $vals ,] FROM t1"
} "1 {too many SQL variables}"


#--------------------------------------------------------------------
# sqllimits-10.*:  Test the SQLITE_MAX_PAGE_SIZE define is enforced. 
# This is probably tested elsewhere too (pagerX.test). Attempts
# to raise the page size above this limit are silently ignored.
#
do_test sqllimits-1.10.1 {
  db close
  file delete -force test.db test.db-journal
  sqlite3 db test.db
  set max $::SQLITE_MAX_PAGE_SIZE
  catchsql "PRAGMA page_size = [expr {$max*2}]"
} {0 {}}
do_test sqllimits-1.10.2 {
  catchsql "PRAGMA page_size"
} {0 1024}
do_test sqllimits-1.10.3 {
  set max $::SQLITE_MAX_PAGE_SIZE
  catchsql "PRAGMA page_size = $max"
} {0 {}}
do_test sqllimits-1.10.4 {
  execsql "pragma page_size"
} $::SQLITE_MAX_PAGE_SIZE
do_test sqllimits-1.10.5 {
  set max $::SQLITE_MAX_PAGE_SIZE
  execsql "pragma page_size = [expr {$max - 5}]"
  execsql "pragma page_size"
} $::SQLITE_MAX_PAGE_SIZE

#--------------------------------------------------------------------
# Test cases sqllimits-11.* verify that the 
# SQLITE_MAX_LIKE_PATTERN_LENGTH limit is enforced. This limit only
# applies to the built-in LIKE operator, supplying an external 
# implementation by overriding the like() scalar function bypasses
# this limitation.
#
# These tests check that the limit is not incorrectly applied to
# the left-hand-side of the LIKE operator (the string being tested
# against the pattern).
#
do_test sqllimits-1.11.1 {
  set max $::SQLITE_MAX_LIKE_PATTERN_LENGTH
  set ::pattern [string repeat "A%" [expr $max/2]]
  set ::string  [string repeat "A" [expr {$max*2}]]
  execsql {
    SELECT $::string LIKE $::pattern;
  }
} {1}
do_test sqllimits-1.11.2 {
  set max $::SQLITE_MAX_LIKE_PATTERN_LENGTH
  set ::pattern [string repeat "A%" [expr {($max/2) + 1}]]
  set ::string  [string repeat "A" [expr {$max*2}]]
  catchsql {
    SELECT $::string LIKE $::pattern;
  }
} {1 {LIKE or GLOB pattern too complex}}

finish_test