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<?php
/**
* MSSQL driver via ODBC
*
* This file is part of ADOdb, a Database Abstraction Layer library for PHP.
*
* @package ADOdb
* @link https://adodb.org Project's web site and documentation
* @link https://github.com/ADOdb/ADOdb Source code and issue tracker
*
* The ADOdb Library is dual-licensed, released under both the BSD 3-Clause
* and the GNU Lesser General Public Licence (LGPL) v2.1 or, at your option,
* any later version. This means you can use it in proprietary products.
* See the LICENSE.md file distributed with this source code for details.
* @license BSD-3-Clause
* @license LGPL-2.1-or-later
*
* @copyright 2000-2013 John Lim
* @copyright 2014 Damien Regad, Mark Newnham and the ADOdb community
*/
// security - hide paths
if (!defined('ADODB_DIR')) die();
if (!defined('_ADODB_ODBC_LAYER')) {
include_once(ADODB_DIR."/drivers/adodb-odbc.inc.php");
}
class ADODB_odbc_mssql extends ADODB_odbc {
var $databaseType = 'odbc_mssql';
var $fmtDate = "'Y-m-d'";
var $fmtTimeStamp = "'Y-m-d\TH:i:s'";
var $_bindInputArray = true;
var $metaDatabasesSQL = "select name from sysdatabases where name <> 'master'";
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'))";
var $metaColumnsSQL = # xtype==61 is datetime
"select c.name,t.name,c.length,c.isnullable, c.status,
(case when c.xusertype=61 then 0 else c.xprec end),
(case when c.xusertype=61 then 0 else c.xscale end)
from syscolumns c join systypes t on t.xusertype=c.xusertype join sysobjects o on o.id=c.id where o.name='%s'";
var $hasTop = 'top'; // support mssql/interbase SELECT TOP 10 * FROM TABLE
var $sysDate = 'GetDate()';
var $sysTimeStamp = 'GetDate()';
var $leftOuter = '*=';
var $rightOuter = '=*';
var $substr = 'substring';
var $length = 'len';
var $ansiOuter = true; // for mssql7 or later
var $identitySQL = 'select SCOPE_IDENTITY()'; // 'select SCOPE_IDENTITY'; # for mssql 2000
var $hasInsertID = true;
var $connectStmt = 'SET CONCAT_NULL_YIELDS_NULL OFF'; # When SET CONCAT_NULL_YIELDS_NULL is ON,
# concatenating a null value with a string yields a NULL result
// crashes php...
function ServerInfo()
{
global $ADODB_FETCH_MODE;
$save = $ADODB_FETCH_MODE;
$ADODB_FETCH_MODE = ADODB_FETCH_NUM;
$row = $this->GetRow("execute sp_server_info 2");
$ADODB_FETCH_MODE = $save;
if (!is_array($row)) return false;
$arr['description'] = $row[2];
$arr['version'] = ADOConnection::_findvers($arr['description']);
return $arr;
}
function IfNull( $field, $ifNull )
{
return " ISNULL($field, $ifNull) "; // if MS SQL Server
}
protected function _insertID($table = '', $column = '')
{
// SCOPE_IDENTITY()
// Returns the last IDENTITY value inserted into an IDENTITY column in
// the same scope. A scope is a module -- a stored procedure, trigger,
// function, or batch. Thus, two statements are in the same scope if
// they are in the same stored procedure, function, or batch.
return $this->GetOne($this->identitySQL);
}
public function metaForeignKeys($table, $owner = '', $upper = false, $associative = false)
{
global $ADODB_FETCH_MODE;
$save = $ADODB_FETCH_MODE;
$ADODB_FETCH_MODE = ADODB_FETCH_NUM;
$table = $this->qstr(strtoupper($table));
$sql =
"select object_name(constid) as constraint_name,
col_name(fkeyid, fkey) as column_name,
object_name(rkeyid) as referenced_table_name,
col_name(rkeyid, rkey) as referenced_column_name
from sysforeignkeys
where upper(object_name(fkeyid)) = $table
order by constraint_name, referenced_table_name, keyno";
$constraints = $this->GetArray($sql);
$ADODB_FETCH_MODE = $save;
$arr = false;
foreach($constraints as $constr) {
//print_r($constr);
$arr[$constr[0]][$constr[2]][] = $constr[1].'='.$constr[3];
}
if (!$arr) return false;
$arr2 = false;
foreach($arr as $k => $v) {
foreach($v as $a => $b) {
if ($upper) $a = strtoupper($a);
$arr2[$a] = $b;
}
}
return $arr2;
}
function MetaTables($ttype=false,$showSchema=false,$mask=false)
{
if ($mask) {//$this->debug=1;
$save = $this->metaTablesSQL;
$mask = $this->qstr($mask);
$this->metaTablesSQL .= " AND name like $mask";
}
$ret = ADOConnection::MetaTables($ttype,$showSchema);
if ($mask) {
$this->metaTablesSQL = $save;
}
return $ret;
}
function MetaColumns($table, $normalize=true)
{
$this->_findschema($table,$schema);
if ($schema) {
$dbName = $this->database;
$this->SelectDB($schema);
}
global $ADODB_FETCH_MODE;
$save = $ADODB_FETCH_MODE;
$ADODB_FETCH_MODE = ADODB_FETCH_NUM;
if ($this->fetchMode !== false) $savem = $this->SetFetchMode(false);
$rs = $this->Execute(sprintf($this->metaColumnsSQL,$table));
if ($schema) {
$this->SelectDB($dbName);
}
if (isset($savem)) $this->SetFetchMode($savem);
$ADODB_FETCH_MODE = $save;
if (!is_object($rs)) {
$false = false;
return $false;
}
$retarr = array();
while (!$rs->EOF){
$fld = new ADOFieldObject();
$fld->name = $rs->fields[0];
$fld->type = $rs->fields[1];
$fld->not_null = (!$rs->fields[3]);
$fld->auto_increment = ($rs->fields[4] == 128); // sys.syscolumns status field. 0x80 = 128 ref: http://msdn.microsoft.com/en-us/library/ms186816.aspx
if (isset($rs->fields[5]) && $rs->fields[5]) {
if ($rs->fields[5]>0) $fld->max_length = $rs->fields[5];
$fld->scale = $rs->fields[6];
if ($fld->scale>0) $fld->max_length += 1;
} else
$fld->max_length = $rs->fields[2];
if ($save == ADODB_FETCH_NUM) {
$retarr[] = $fld;
} else {
$retarr[strtoupper($fld->name)] = $fld;
}
$rs->MoveNext();
}
$rs->Close();
return $retarr;
}
function MetaIndexes($table,$primary=false, $owner=false)
{
$table = $this->qstr($table);
$sql = "SELECT i.name AS ind_name, C.name AS col_name, USER_NAME(O.uid) AS Owner, c.colid, k.Keyno,
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,
CASE WHEN I.status & 2 = 2 THEN 1 ELSE 0 END AS IsUnique
FROM dbo.sysobjects o INNER JOIN dbo.sysindexes I ON o.id = i.id
INNER JOIN dbo.sysindexkeys K ON I.id = K.id AND I.Indid = K.Indid
INNER JOIN dbo.syscolumns c ON K.id = C.id AND K.colid = C.Colid
WHERE LEFT(i.name, 8) <> '_WA_Sys_' AND o.status >= 0 AND O.Name LIKE $table
ORDER BY O.name, I.Name, K.keyno";
global $ADODB_FETCH_MODE;
$save = $ADODB_FETCH_MODE;
$ADODB_FETCH_MODE = ADODB_FETCH_NUM;
if ($this->fetchMode !== FALSE) {
$savem = $this->SetFetchMode(FALSE);
}
$rs = $this->Execute($sql);
if (isset($savem)) {
$this->SetFetchMode($savem);
}
$ADODB_FETCH_MODE = $save;
if (!is_object($rs)) {
return FALSE;
}
$indexes = array();
while ($row = $rs->FetchRow()) {
if (!$primary && $row[5]) continue;
$indexes[$row[0]]['unique'] = $row[6];
$indexes[$row[0]]['columns'][] = $row[1];
}
return $indexes;
}
function _query($sql,$inputarr=false)
{
if (is_string($sql)) $sql = str_replace('||','+',$sql);
return ADODB_odbc::_query($sql,$inputarr);
}
function SetTransactionMode( $transaction_mode )
{
$this->_transmode = $transaction_mode;
if (empty($transaction_mode)) {
$this->Execute('SET TRANSACTION ISOLATION LEVEL READ COMMITTED');
return;
}
if (!stristr($transaction_mode,'isolation')) $transaction_mode = 'ISOLATION LEVEL '.$transaction_mode;
$this->Execute("SET TRANSACTION ".$transaction_mode);
}
// "Stein-Aksel Basma" <basma@accelero.no>
// tested with MSSQL 2000
function MetaPrimaryKeys($table, $owner = false)
{
global $ADODB_FETCH_MODE;
$schema = '';
$this->_findschema($table,$schema);
//if (!$schema) $schema = $this->database;
if ($schema) $schema = "and k.table_catalog like '$schema%'";
$sql = "select distinct k.column_name,ordinal_position from information_schema.key_column_usage k,
information_schema.table_constraints tc
where tc.constraint_name = k.constraint_name and tc.constraint_type =
'PRIMARY KEY' and k.table_name = '$table' $schema order by ordinal_position ";
$savem = $ADODB_FETCH_MODE;
$ADODB_FETCH_MODE = ADODB_FETCH_ASSOC;
$a = $this->GetCol($sql);
$ADODB_FETCH_MODE = $savem;
if ($a && sizeof($a)>0) return $a;
$false = false;
return $false;
}
function SelectLimit($sql,$nrows=-1,$offset=-1, $inputarr=false,$secs2cache=0)
{
$nrows = (int) $nrows;
$offset = (int) $offset;
if ($nrows > 0 && $offset <= 0) {
$sql = preg_replace(
'/(^\s*select\s+(distinctrow|distinct)?)/i','\\1 '.$this->hasTop." $nrows ",$sql);
$rs = $this->Execute($sql,$inputarr);
} else
$rs = ADOConnection::SelectLimit($sql,$nrows,$offset,$inputarr,$secs2cache);
return $rs;
}
// Format date column in sql string given an input format that understands Y M D
function SQLDate($fmt, $col=false)
{
if (!$col) $col = $this->sysTimeStamp;
$s = '';
$len = strlen($fmt);
for ($i=0; $i < $len; $i++) {
if ($s) $s .= '+';
$ch = $fmt[$i];
switch($ch) {
case 'Y':
case 'y':
$s .= "datename(yyyy,$col)";
break;
case 'M':
$s .= "convert(char(3),$col,0)";
break;
case 'm':
$s .= "replace(str(month($col),2),' ','0')";
break;
case 'Q':
case 'q':
$s .= "datename(quarter,$col)";
break;
case 'D':
case 'd':
$s .= "replace(str(day($col),2),' ','0')";
break;
case 'h':
$s .= "substring(convert(char(14),$col,0),13,2)";
break;
case 'H':
$s .= "replace(str(datepart(hh,$col),2),' ','0')";
break;
case 'i':
$s .= "replace(str(datepart(mi,$col),2),' ','0')";
break;
case 's':
$s .= "replace(str(datepart(ss,$col),2),' ','0')";
break;
case 'a':
case 'A':
$s .= "substring(convert(char(19),$col,0),18,2)";
break;
default:
if ($ch == '\\') {
$i++;
$ch = substr($fmt,$i,1);
}
$s .= $this->qstr($ch);
break;
}
}
return $s;
}
/**
* Returns a substring of a varchar type field
*
* The SQL server version varies because the length is mandatory, so
* we append a reasonable string length
*
* @param string $fld The field to sub-string
* @param int $start The start point
* @param int $length An optional length
*
* @return The SQL text
*/
function substr($fld,$start,$length=0)
{
if ($length == 0)
/*
* The length available to varchar is 2GB, but that makes no
* sense in a substring, so I'm going to arbitrarily limit
* the length to 1K, but you could change it if you want
*/
$length = 1024;
$text = "SUBSTRING($fld,$start,$length)";
return $text;
}
/**
* Returns the maximum size of a MetaType C field. Because of the
* database design, SQL Server places no limits on the size of data inserted
* Although the actual limit is 2^31-1 bytes.
*
* @return int
*/
function charMax()
{
return ADODB_STRINGMAX_NOLIMIT;
}
/**
* Returns the maximum size of a MetaType X field. Because of the
* database design, SQL Server places no limits on the size of data inserted
* Although the actual limit is 2^31-1 bytes.
*
* @return int
*/
function textMax()
{
return ADODB_STRINGMAX_NOLIMIT;
}
// returns concatenated string
// MSSQL requires integers to be cast as strings
// automatically cast every datatype to VARCHAR(255)
// @author David Rogers (introspectshun)
function Concat()
{
$s = "";
$arr = func_get_args();
// Split single record on commas, if possible
if (sizeof($arr) == 1) {
foreach ($arr as $arg) {
$args = explode(',', $arg);
}
$arr = $args;
}
array_walk(
$arr,
function(&$value, $key) {
$value = "CAST(" . $value . " AS VARCHAR(255))";
}
);
$s = implode('+',$arr);
if (sizeof($arr) > 0) return "$s";
return '';
}
}
class ADORecordSet_odbc_mssql extends ADORecordSet_odbc {
var $databaseType = 'odbc_mssql';
}
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