fixed Mysql update obj

SE/se-lib/Core/Database/Mysql.php

@@ -482,7 +482,7 @@ class Core_Database_Mysql extends Core_Database {
 		$changed = false;
 		foreach (get_object_vars($sql_obj) as $k => $v) {
 			if (strtolower($k) == strtolower($primary)) continue;
-			if ($v == $curr_obj->$k) {// === ?
+			if ((string)$v === (string)$curr_obj->$k) {// TODO: NULL !== ''
 				unset($sql_obj->$k);
 			} else {
 				$changed = true;
@@ -913,7 +913,7 @@ class Core_Database_Mysql extends Core_Database {
 								       							    if(in_array('SKIP-PRIMARY-KEY', $options) && ($PRIMARY_FIELD==$INDEX_OF_CONFIG_TABLE))  {
 								       							    	$sql.=" null ";
 								       							    } else {
-								       							    if($ARR_TABLE['FIELDS'][$INDEX_OF_CONFIG_TABLE]->Null=='NO') $sql.=" not null "; else 
+								       							    if($ARR_TABLE['FIELDS'][$INDEX_OF_CONFIG_TABLE]->Null=='NO') $sql.=" not null "; else
 								       							    if($ARR_TABLE['FIELDS'][$INDEX_OF_CONFIG_TABLE]->Null=='YES') $sql.="  null ";  // else die('917 unknown NULL??? '.$ARR_TABLE['FIELDS'][$INDEX_OF_CONFIG_TABLE]->Null.' . Should be or YES or NO');
 								       							    }
 								       							    $sql.=" ;";
@@ -1178,7 +1178,7 @@ class Core_Database_Mysql extends Core_Database {
 														 } else if($FOUND_INDEX_ARR->Non_unique==1) {
 														    if($FOUND_INDEX_ARR->Sub_part > 0)
 														    	$sql="ALTER TABLE  `".$TABLE."` ADD KEY `".$FOUND_INDEX_ARR->Key_name."`  (  ".$FOUND_INDEX_ARR->Column_name." (".$FOUND_INDEX_ARR->Sub_part.") ) ;" ;
-														    else 
+														    else
 														    	$sql="ALTER TABLE  `".$TABLE."` ADD KEY `".$FOUND_INDEX_ARR->Key_name."`  (  ".$FOUND_INDEX_ARR->Column_name." ) ;" ;
 														    echo "\n ".$sql;
 														    	$result=$this->query($sql) or DEBUG_S(-3,'Problem ze SQL:',$sql,__FILE__, __FUNCTION__, __LINE__)  or die1();