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   1  <?php
   2  /* 
   3  V5.11 5 May 2010   (c) 2000-2010 John Lim (jlim#natsoft.com). All rights reserved.
   4    Released under both BSD license and Lesser GPL library license. 
   5    Whenever there is any discrepancy between the two licenses, 
   6    the BSD license will take precedence. 
   7  Set tabs to 4 for best viewing.
   8    
   9    Latest version is available at http://adodb.sourceforge.net
  10    
  11    MSSQL support via ODBC. Requires ODBC. Works on Windows and Unix. 
  12    For Unix configuration, see http://phpbuilder.com/columns/alberto20000919.php3
  13  */
  14  
  15  // security - hide paths
  16  if (!defined('ADODB_DIR')) die();
  17  
  18  if (!defined('_ADODB_ODBC_LAYER')) {
  19      include(ADODB_DIR."/drivers/adodb-odbc.inc.php");
  20  }
  21  
  22   
  23  class  ADODB_odbc_mssql extends ADODB_odbc {    
  24      var $databaseType = 'odbc_mssql';
  25      var $fmtDate = "'Y-m-d'";
  26      var $fmtTimeStamp = "'Y-m-d H:i:s'";
  27      var $_bindInputArray = true;
  28      var $metaDatabasesSQL = "select name from sysdatabases where name <> 'master'";
  29      var $metaTablesSQL="select name,case when type='U' then 'T' else 'V' end from sysobjects where (type='U' or type='V') and (name not in ('sysallocations','syscolumns','syscomments','sysdepends','sysfilegroups','sysfiles','sysfiles1','sysforeignkeys','sysfulltextcatalogs','sysindexes','sysindexkeys','sysmembers','sysobjects','syspermissions','sysprotects','sysreferences','systypes','sysusers','sysalternates','sysconstraints','syssegments','REFERENTIAL_CONSTRAINTS','CHECK_CONSTRAINTS','CONSTRAINT_TABLE_USAGE','CONSTRAINT_COLUMN_USAGE','VIEWS','VIEW_TABLE_USAGE','VIEW_COLUMN_USAGE','SCHEMATA','TABLES','TABLE_CONSTRAINTS','TABLE_PRIVILEGES','COLUMNS','COLUMN_DOMAIN_USAGE','COLUMN_PRIVILEGES','DOMAINS','DOMAIN_CONSTRAINTS','KEY_COLUMN_USAGE'))";
  30      var $metaColumnsSQL = "select c.name,t.name,c.length from syscolumns c join systypes t on t.xusertype=c.xusertype join sysobjects o on o.id=c.id where o.name='%s'";
  31      var $hasTop = 'top';        // support mssql/interbase SELECT TOP 10 * FROM TABLE
  32      var $sysDate = 'GetDate()';
  33      var $sysTimeStamp = 'GetDate()';
  34      var $leftOuter = '*=';
  35      var $rightOuter = '=*';
  36      var $substr = 'substring';
  37      var $length = 'len';
  38      var $ansiOuter = true; // for mssql7 or later
  39      var $identitySQL = 'select SCOPE_IDENTITY()'; // 'select SCOPE_IDENTITY'; # for mssql 2000
  40      var $hasInsertID = true;
  41      var $connectStmt = 'SET CONCAT_NULL_YIELDS_NULL OFF'; # When SET CONCAT_NULL_YIELDS_NULL is ON, 
  42                                                            # concatenating a null value with a string yields a NULL result
  43      
  44  	function ADODB_odbc_mssql()
  45      {
  46          $this->ADODB_odbc();
  47          //$this->curmode = SQL_CUR_USE_ODBC;    
  48      }
  49  
  50      // crashes php...
  51  	function ServerInfo()
  52      {
  53      global $ADODB_FETCH_MODE;
  54          $save = $ADODB_FETCH_MODE;
  55          $ADODB_FETCH_MODE = ADODB_FETCH_NUM;
  56          $row = $this->GetRow("execute sp_server_info 2");
  57          $ADODB_FETCH_MODE = $save;
  58          if (!is_array($row)) return false;
  59          $arr['description'] = $row[2];
  60          $arr['version'] = ADOConnection::_findvers($arr['description']);
  61          return $arr;
  62      }
  63  
  64  	function IfNull( $field, $ifNull ) 
  65      {
  66          return " ISNULL($field, $ifNull) "; // if MS SQL Server
  67      }
  68      
  69  	function _insertid()
  70      {
  71      // SCOPE_IDENTITY()
  72      // Returns the last IDENTITY value inserted into an IDENTITY column in 
  73      // the same scope. A scope is a module -- a stored procedure, trigger, 
  74      // function, or batch. Thus, two statements are in the same scope if 
  75      // they are in the same stored procedure, function, or batch.
  76              return $this->GetOne($this->identitySQL);
  77      }
  78      
  79      
  80  	function MetaForeignKeys($table, $owner=false, $upper=false)
  81      {
  82      global $ADODB_FETCH_MODE;
  83      
  84          $save = $ADODB_FETCH_MODE;
  85          $ADODB_FETCH_MODE = ADODB_FETCH_NUM;
  86          $table = $this->qstr(strtoupper($table));
  87          
  88          $sql = 
  89  "select object_name(constid) as constraint_name,
  90      col_name(fkeyid, fkey) as column_name,
  91      object_name(rkeyid) as referenced_table_name,
  92         col_name(rkeyid, rkey) as referenced_column_name
  93  from sysforeignkeys
  94  where upper(object_name(fkeyid)) = $table
  95  order by constraint_name, referenced_table_name, keyno";
  96          
  97          $constraints = $this->GetArray($sql);
  98          
  99          $ADODB_FETCH_MODE = $save;
 100          
 101          $arr = false;
 102          foreach($constraints as $constr) {
 103              //print_r($constr);
 104              $arr[$constr[0]][$constr[2]][] = $constr[1].'='.$constr[3]; 
 105          }
 106          if (!$arr) return false;
 107          
 108          $arr2 = false;
 109          
 110          foreach($arr as $k => $v) {
 111              foreach($v as $a => $b) {
 112                  if ($upper) $a = strtoupper($a);
 113                  $arr2[$a] = $b;
 114              }
 115          }
 116          return $arr2;
 117      }
 118      
 119  	function MetaTables($ttype=false,$showSchema=false,$mask=false) 
 120      {
 121          if ($mask) {$this->debug=1;
 122              $save = $this->metaTablesSQL;
 123              $mask = $this->qstr($mask);
 124              $this->metaTablesSQL .= " AND name like $mask";
 125          }
 126          $ret = ADOConnection::MetaTables($ttype,$showSchema);
 127          
 128          if ($mask) {
 129              $this->metaTablesSQL = $save;
 130          }
 131          return $ret;
 132      }
 133      
 134  	function MetaColumns($table, $normalize=true)
 135      {
 136          $arr = ADOConnection::MetaColumns($table);
 137          return $arr;
 138      }
 139      
 140      
 141  	function MetaIndexes($table,$primary=false, $owner=false)
 142      {
 143          $table = $this->qstr($table);
 144  
 145          $sql = "SELECT i.name AS ind_name, C.name AS col_name, USER_NAME(O.uid) AS Owner, c.colid, k.Keyno, 
 146              CASE WHEN I.indid BETWEEN 1 AND 254 AND (I.status & 2048 = 2048 OR I.Status = 16402 AND O.XType = 'V') THEN 1 ELSE 0 END AS IsPK,
 147              CASE WHEN I.status & 2 = 2 THEN 1 ELSE 0 END AS IsUnique
 148              FROM dbo.sysobjects o INNER JOIN dbo.sysindexes I ON o.id = i.id 
 149              INNER JOIN dbo.sysindexkeys K ON I.id = K.id AND I.Indid = K.Indid 
 150              INNER JOIN dbo.syscolumns c ON K.id = C.id AND K.colid = C.Colid
 151              WHERE LEFT(i.name, 8) <> '_WA_Sys_' AND o.status >= 0 AND O.Name LIKE $table
 152              ORDER BY O.name, I.Name, K.keyno";
 153  
 154          global $ADODB_FETCH_MODE;
 155          $save = $ADODB_FETCH_MODE;
 156          $ADODB_FETCH_MODE = ADODB_FETCH_NUM;
 157          if ($this->fetchMode !== FALSE) {
 158              $savem = $this->SetFetchMode(FALSE);
 159          }
 160          
 161          $rs = $this->Execute($sql);
 162          if (isset($savem)) {
 163              $this->SetFetchMode($savem);
 164          }
 165          $ADODB_FETCH_MODE = $save;
 166  
 167          if (!is_object($rs)) {
 168              return FALSE;
 169          }
 170  
 171          $indexes = array();
 172          while ($row = $rs->FetchRow()) {
 173              if (!$primary && $row[5]) continue;
 174              
 175              $indexes[$row[0]]['unique'] = $row[6];
 176              $indexes[$row[0]]['columns'][] = $row[1];
 177          }
 178          return $indexes;
 179      }
 180      
 181  	function _query($sql,$inputarr=false)
 182      {
 183          if (is_string($sql)) $sql = str_replace('||','+',$sql);
 184          return ADODB_odbc::_query($sql,$inputarr);
 185      }
 186      
 187  	function SetTransactionMode( $transaction_mode ) 
 188      {
 189          $this->_transmode  = $transaction_mode;
 190          if (empty($transaction_mode)) {
 191              $this->Execute('SET TRANSACTION ISOLATION LEVEL READ COMMITTED');
 192              return;
 193          }
 194          if (!stristr($transaction_mode,'isolation')) $transaction_mode = 'ISOLATION LEVEL '.$transaction_mode;
 195          $this->Execute("SET TRANSACTION ".$transaction_mode);
 196      }
 197      
 198      // "Stein-Aksel Basma" <basma@accelero.no>
 199      // tested with MSSQL 2000
 200  	function MetaPrimaryKeys($table)
 201      {
 202      global $ADODB_FETCH_MODE;
 203      
 204          $schema = '';
 205          $this->_findschema($table,$schema);
 206          //if (!$schema) $schema = $this->database;
 207          if ($schema) $schema = "and k.table_catalog like '$schema%'"; 
 208      
 209          $sql = "select distinct k.column_name,ordinal_position from information_schema.key_column_usage k,
 210          information_schema.table_constraints tc 
 211          where tc.constraint_name = k.constraint_name and tc.constraint_type =
 212          'PRIMARY KEY' and k.table_name = '$table' $schema order by ordinal_position ";
 213          
 214          $savem = $ADODB_FETCH_MODE;
 215          $ADODB_FETCH_MODE = ADODB_FETCH_ASSOC;
 216          $a = $this->GetCol($sql);
 217          $ADODB_FETCH_MODE = $savem;
 218          
 219          if ($a && sizeof($a)>0) return $a;
 220          $false = false;
 221          return $false;      
 222      }
 223      
 224  	function SelectLimit($sql,$nrows=-1,$offset=-1, $inputarr=false,$secs2cache=0)
 225      {
 226          if ($nrows > 0 && $offset <= 0) {
 227              $sql = preg_replace(
 228                  '/(^\s*select\s+(distinctrow|distinct)?)/i','\\1 '.$this->hasTop." $nrows ",$sql);
 229              $rs = $this->Execute($sql,$inputarr);
 230          } else
 231              $rs = ADOConnection::SelectLimit($sql,$nrows,$offset,$inputarr,$secs2cache);
 232              
 233          return $rs;
 234      }
 235      
 236      // Format date column in sql string given an input format that understands Y M D
 237  	function SQLDate($fmt, $col=false)
 238      {    
 239          if (!$col) $col = $this->sysTimeStamp;
 240          $s = '';
 241          
 242          $len = strlen($fmt);
 243          for ($i=0; $i < $len; $i++) {
 244              if ($s) $s .= '+';
 245              $ch = $fmt[$i];
 246              switch($ch) {
 247              case 'Y':
 248              case 'y':
 249                  $s .= "datename(yyyy,$col)";
 250                  break;
 251              case 'M':
 252                  $s .= "convert(char(3),$col,0)";
 253                  break;
 254              case 'm':
 255                  $s .= "replace(str(month($col),2),' ','0')";
 256                  break;
 257              case 'Q':
 258              case 'q':
 259                  $s .= "datename(quarter,$col)";
 260                  break;
 261              case 'D':
 262              case 'd':
 263                  $s .= "replace(str(day($col),2),' ','0')";
 264                  break;
 265              case 'h':
 266                  $s .= "substring(convert(char(14),$col,0),13,2)";
 267                  break;
 268              
 269              case 'H':
 270                  $s .= "replace(str(datepart(hh,$col),2),' ','0')";
 271                  break;
 272                  
 273              case 'i':
 274                  $s .= "replace(str(datepart(mi,$col),2),' ','0')";
 275                  break;
 276              case 's':
 277                  $s .= "replace(str(datepart(ss,$col),2),' ','0')";
 278                  break;
 279              case 'a':
 280              case 'A':
 281                  $s .= "substring(convert(char(19),$col,0),18,2)";
 282                  break;
 283                  
 284              default:
 285                  if ($ch == '\\') {
 286                      $i++;
 287                      $ch = substr($fmt,$i,1);
 288                  }
 289                  $s .= $this->qstr($ch);
 290                  break;
 291              }
 292          }
 293          return $s;
 294      }
 295  
 296  } 
 297   
 298  class  ADORecordSet_odbc_mssql extends ADORecordSet_odbc {    
 299      
 300      var $databaseType = 'odbc_mssql';
 301      
 302  	function ADORecordSet_odbc_mssql($id,$mode=false)
 303      {
 304          return $this->ADORecordSet_odbc($id,$mode);
 305      }    
 306  }
 307  ?>