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Overview
Comment:When expanding '*' in the result set of a SELECT, quote the expanded identifiers. Fix for #2450. (CVS 4111)
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Files: files | file ages | folders
SHA1: d5b7224f37db1729dd042d48765d7a79247e1bde
User & Date: danielk1977 2007-06-24 06:32:18
Context
2007-06-24
08:00
Add the "(database.)freelist_count" PRAGMA. For querying the size of the database free-list. (CVS 4112) (check-in: 1fb4251a user: danielk1977 tags: trunk)
06:32
When expanding '*' in the result set of a SELECT, quote the expanded identifiers. Fix for #2450. (CVS 4111) (check-in: d5b7224f user: danielk1977 tags: trunk)
2007-06-22
20:17
fix linking failure on OS/2 that happens with the amalgamation and the high memory option enabled (CVS 4110) (check-in: f35e20e1 user: pweilbacher tags: trunk)
Changes
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Changes to src/printf.c. 

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#define etCHARLIT    10 /* Literal characters.  %' */
#define etSQLESCAPE  11 /* Strings with '\'' doubled.  %q */
#define etSQLESCAPE2 12 /* Strings with '\'' doubled and enclosed in '',
                          NULL pointers replaced by SQL NULL.  %Q */
#define etTOKEN      13 /* a pointer to a Token structure */
#define etSRCLIST    14 /* a pointer to a SrcList */
#define etPOINTER    15 /* The %p conversion */



/*
** An "etByte" is an 8-bit unsigned value.
*/
typedef unsigned char etByte;

................................................................................
static const et_info fmtinfo[] = {
  {  'd', 10, 1, etRADIX,      0,  0 },
  {  's',  0, 4, etSTRING,     0,  0 },
  {  'g',  0, 1, etGENERIC,    30, 0 },
  {  'z',  0, 6, etDYNSTRING,  0,  0 },
  {  'q',  0, 4, etSQLESCAPE,  0,  0 },
  {  'Q',  0, 4, etSQLESCAPE2, 0,  0 },

  {  'c',  0, 0, etCHARX,      0,  0 },
  {  'o',  8, 0, etRADIX,      0,  2 },
  {  'u', 10, 0, etRADIX,      0,  0 },
  {  'x', 16, 0, etRADIX,      16, 1 },
  {  'X', 16, 0, etRADIX,      0,  4 },
#ifndef SQLITE_OMIT_FLOATING_POINT
  {  'f',  0, 1, etFLOAT,      0,  0 },
................................................................................
        }else if( xtype==etDYNSTRING ){
          zExtra = bufpt;
        }
        length = strlen(bufpt);
        if( precision>=0 && precision<length ) length = precision;
        break;
      case etSQLESCAPE:
      case etSQLESCAPE2: {

        int i, j, n, ch, isnull;
        int needQuote;

        char *escarg = va_arg(ap,char*);
        isnull = escarg==0;
        if( isnull ) escarg = (xtype==etSQLESCAPE2 ? "NULL" : "(NULL)");
        for(i=n=0; (ch=escarg[i])!=0; i++){
          if( ch=='\'' )  n++;
        }
        needQuote = !isnull && xtype==etSQLESCAPE2;
        n += i + 1 + needQuote*2;
        if( n>etBUFSIZE ){
          bufpt = zExtra = sqliteMalloc( n );
          if( bufpt==0 ) return -1;
        }else{
          bufpt = buf;
        }
        j = 0;
        if( needQuote ) bufpt[j++] = '\'';
        for(i=0; (ch=escarg[i])!=0; i++){
          bufpt[j++] = ch;
          if( ch=='\'' ) bufpt[j++] = ch;
        }
        if( needQuote ) bufpt[j++] = '\'';
        bufpt[j] = 0;
        length = j;
        /* The precision is ignored on %q and %Q */
        /* if( precision>=0 && precision<length ) length = precision; */
        break;
      }
      case etTOKEN: {








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#define etCHARLIT    10 /* Literal characters.  %' */
#define etSQLESCAPE  11 /* Strings with '\'' doubled.  %q */
#define etSQLESCAPE2 12 /* Strings with '\'' doubled and enclosed in '',
                          NULL pointers replaced by SQL NULL.  %Q */
#define etTOKEN      13 /* a pointer to a Token structure */
#define etSRCLIST    14 /* a pointer to a SrcList */
#define etPOINTER    15 /* The %p conversion */
#define etSQLESCAPE3 16 /* %w -> Strings with '\"' doubled */


/*
** An "etByte" is an 8-bit unsigned value.
*/
typedef unsigned char etByte;

................................................................................
static const et_info fmtinfo[] = {
  {  'd', 10, 1, etRADIX,      0,  0 },
  {  's',  0, 4, etSTRING,     0,  0 },
  {  'g',  0, 1, etGENERIC,    30, 0 },
  {  'z',  0, 6, etDYNSTRING,  0,  0 },
  {  'q',  0, 4, etSQLESCAPE,  0,  0 },
  {  'Q',  0, 4, etSQLESCAPE2, 0,  0 },
  {  'w',  0, 4, etSQLESCAPE3, 0,  0 },
  {  'c',  0, 0, etCHARX,      0,  0 },
  {  'o',  8, 0, etRADIX,      0,  2 },
  {  'u', 10, 0, etRADIX,      0,  0 },
  {  'x', 16, 0, etRADIX,      16, 1 },
  {  'X', 16, 0, etRADIX,      0,  4 },
#ifndef SQLITE_OMIT_FLOATING_POINT
  {  'f',  0, 1, etFLOAT,      0,  0 },
................................................................................
        }else if( xtype==etDYNSTRING ){
          zExtra = bufpt;
        }
        length = strlen(bufpt);
        if( precision>=0 && precision<length ) length = precision;
        break;
      case etSQLESCAPE:
      case etSQLESCAPE2:
      case etSQLESCAPE3: {
        int i, j, n, ch, isnull;
        int needQuote;
        char q = ((xtype==etSQLESCAPE3)?'"':'\'');   /* Quote character */
        char *escarg = va_arg(ap,char*);
        isnull = escarg==0;
        if( isnull ) escarg = (xtype==etSQLESCAPE2 ? "NULL" : "(NULL)");
        for(i=n=0; (ch=escarg[i])!=0; i++){
          if( ch==q )  n++;
        }
        needQuote = !isnull && xtype==etSQLESCAPE2;
        n += i + 1 + needQuote*2;
        if( n>etBUFSIZE ){
          bufpt = zExtra = sqliteMalloc( n );
          if( bufpt==0 ) return -1;
        }else{
          bufpt = buf;
        }
        j = 0;
        if( needQuote ) bufpt[j++] = q;
        for(i=0; (ch=escarg[i])!=0; i++){
          bufpt[j++] = ch;
          if( ch==q ) bufpt[j++] = ch;
        }
        if( needQuote ) bufpt[j++] = q;
        bufpt[j] = 0;
        length = j;
        /* The precision is ignored on %q and %Q */
        /* if( precision>=0 && precision<length ) length = precision; */
        break;
      }
      case etTOKEN: {

Changes to src/select.c. 

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**    May you find forgiveness for yourself and forgive others.
**    May you share freely, never taking more than you give.
**
*************************************************************************
** This file contains C code routines that are called by the parser
** to handle SELECT statements in SQLite.
**
** $Id: select.c,v 1.351 2007/06/15 15:31:50 drh Exp $
*/
#include "sqliteInt.h"


/*
** Delete all the content of a Select structure but do not deallocate
** the select structure itself.
................................................................................
** Set the value of a token to a '\000'-terminated string.
*/
static void setToken(Token *p, const char *z){
  p->z = (u8*)z;
  p->n = z ? strlen(z) : 0;
  p->dyn = 0;
}















/*
** Create an expression node for an identifier with the name of zName
*/
Expr *sqlite3CreateIdExpr(const char *zName){
  Token dummy;
  setToken(&dummy, zName);
................................................................................
                /* In a join with a USING clause, omit columns in the
                ** using clause from the table on the right. */
                continue;
              }
            }
            pRight = sqlite3Expr(TK_ID, 0, 0, 0);
            if( pRight==0 ) break;
            setToken(&pRight->token, zName);
            if( zTabName && (longNames || pTabList->nSrc>1) ){
              Expr *pLeft = sqlite3Expr(TK_ID, 0, 0, 0);
              pExpr = sqlite3Expr(TK_DOT, pLeft, pRight, 0);
              if( pExpr==0 ) break;
              setToken(&pLeft->token, zTabName);
              setToken(&pExpr->span, sqlite3MPrintf("%s.%s", zTabName, zName));
              pExpr->span.dyn = 1;
              pExpr->token.z = 0;
              pExpr->token.n = 0;
              pExpr->token.dyn = 0;
            }else{
              pExpr = pRight;
              pExpr->span = pExpr->token;

            }
            if( longNames ){
              pNew = sqlite3ExprListAppend(pNew, pExpr, &pExpr->span);
            }else{
              pNew = sqlite3ExprListAppend(pNew, pExpr, &pRight->token);
            }
          }
................................................................................
    }
    sqlite3ExprListDelete(pEList);
    p->pEList = pNew;
  }
  if( p->pEList && p->pEList->nExpr>SQLITE_MAX_COLUMN ){
    sqlite3ErrorMsg(pParse, "too many columns in result set");
    rc = SQLITE_ERROR;



  }
  return rc;
}

#ifndef SQLITE_OMIT_COMPOUND_SELECT
/*
** This routine associates entries in an ORDER BY expression list with








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**    May you find forgiveness for yourself and forgive others.
**    May you share freely, never taking more than you give.
**
*************************************************************************
** This file contains C code routines that are called by the parser
** to handle SELECT statements in SQLite.
**
** $Id: select.c,v 1.352 2007/06/24 06:32:18 danielk1977 Exp $
*/
#include "sqliteInt.h"


/*
** Delete all the content of a Select structure but do not deallocate
** the select structure itself.
................................................................................
** Set the value of a token to a '\000'-terminated string.
*/
static void setToken(Token *p, const char *z){
  p->z = (u8*)z;
  p->n = z ? strlen(z) : 0;
  p->dyn = 0;
}

/*
** Set the token to the double-quoted and escaped version of the string pointed
** to by z. For example;
**
**    {a"bc}  ->  {"a""bc"}
*/
static void setQuotedToken(Token *p, const char *z){
  p->z = (u8 *)sqlite3MPrintf("\"%w\"", z);
  p->dyn = 1;
  if( p->z ){
    p->n = strlen((char *)p->z);
  }
}

/*
** Create an expression node for an identifier with the name of zName
*/
Expr *sqlite3CreateIdExpr(const char *zName){
  Token dummy;
  setToken(&dummy, zName);
................................................................................
                /* In a join with a USING clause, omit columns in the
                ** using clause from the table on the right. */
                continue;
              }
            }
            pRight = sqlite3Expr(TK_ID, 0, 0, 0);
            if( pRight==0 ) break;
            setQuotedToken(&pRight->token, zName);
            if( zTabName && (longNames || pTabList->nSrc>1) ){
              Expr *pLeft = sqlite3Expr(TK_ID, 0, 0, 0);
              pExpr = sqlite3Expr(TK_DOT, pLeft, pRight, 0);
              if( pExpr==0 ) break;
              setQuotedToken(&pLeft->token, zTabName);
              setToken(&pExpr->span, sqlite3MPrintf("%s.%s", zTabName, zName));
              pExpr->span.dyn = 1;
              pExpr->token.z = 0;
              pExpr->token.n = 0;
              pExpr->token.dyn = 0;
            }else{
              pExpr = pRight;
              pExpr->span = pExpr->token;
              pExpr->span.dyn = 0;
            }
            if( longNames ){
              pNew = sqlite3ExprListAppend(pNew, pExpr, &pExpr->span);
            }else{
              pNew = sqlite3ExprListAppend(pNew, pExpr, &pRight->token);
            }
          }
................................................................................
    }
    sqlite3ExprListDelete(pEList);
    p->pEList = pNew;
  }
  if( p->pEList && p->pEList->nExpr>SQLITE_MAX_COLUMN ){
    sqlite3ErrorMsg(pParse, "too many columns in result set");
    rc = SQLITE_ERROR;
  }
  if( sqlite3MallocFailed() ){
    rc = SQLITE_NOMEM;
  }
  return rc;
}

#ifndef SQLITE_OMIT_COMPOUND_SELECT
/*
** This routine associates entries in an ORDER BY expression list with

Added test/tkt2450.test. 



































































































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# 2007 June 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 is to test that ticket #2450 has been fixed.
#
# $Id: tkt2450.test,v 1.1 2007/06/24 06:32:18 danielk1977 Exp $
#

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

do_test tkt2450-1 {
  execsql {
    CREATE TABLE "t a" ("""cb""");
    INSERT INTO "t a" ("""cb""") VALUES (1);
    SELECT """cb""" FROM "t a";
  }
} {1}

do_test tkt2450-2 {
  execsql {
    SELECT * FROM "t a";
  }
} {1}

do_test tkt2450-3 {
  execsql {
    SELECT "t a".* FROM "t a";
  }
} {1}

do_test tkt2450-3 {
  execsql {
    CREATE TABLE t1(a);
    INSERT INTO t1 VALUES(2);
    SELECT * FROM "t a", t1;
  }
} {1 2}

finish_test

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