diff --git a/module/chart/model.php b/module/chart/model.php
index 9192c34b29..4495d5a0e1 100644
--- a/module/chart/model.php
+++ b/module/chart/model.php
@@ -696,5 +696,110 @@ class chartModel extends model
 
         return $filterFormat;
     }
+
+    /**
+     * Get tables.
+     *
+     * @param  string $sql
+     * @access public
+     * @return array
+     */
+    public function getTables($sql)
+    {
+        $processedSql = trim($sql, ';');
+        $processedSql = str_replace(array("\r\n", "\n"), ' ', $processedSql);
+        $processedSql = str_replace('`', '', $processedSql);
+        preg_match_all('/^select (.+) from (.+)$/i', $processedSql, $selectAndFrom);
+        if(empty($selectAndFrom[2][0])) return false;
+
+        $selectSql = $selectAndFrom[1][0];
+        $tableSql  = $fromSql = $selectAndFrom[2][0];
+        if(stripos($fromSql, 'where') !== false)    $tableSql = trim(substr($fromSql, 0, stripos($fromSql, 'where')));
+        if(stripos($fromSql, 'limit') !== false)    $tableSql = trim(substr($fromSql, 0, stripos($fromSql, 'limit')));
+        if(stripos($fromSql, 'having') !== false)   $tableSql = trim(substr($fromSql, 0, stripos($fromSql, 'having')));
+        if(stripos($fromSql, 'group by') !== false) $tableSql = trim(substr($fromSql, 0, stripos($fromSql, 'group by')));
+
+        /* Remove such as "left join|right join|join", "on (t1.id=t2.id)", result like t1, t2 as t3. */
+        $tableSql .= ' ';
+        if(stripos($tableSql, 'join') !== false) $tableSql = preg_replace(array('/join\s+([A-Z]+_\w+ .*)on/Ui', '/,\s*on\s+[^,]+/i'), array(',$1,on', ''), $tableSql);
+
+        /* Match t2 as t3 */
+        preg_match_all('/(\w+) +as +(\w+)/i', $tableSql, $out);
+
+        $fields = explode(',', $selectSql);
+        foreach($fields as $i => $field)
+        {
+            if($field) $asField = '';
+            if(strrpos($field, ' as ') !== false) list($field, $asField) = explode(' as ', $field);
+            if(strrpos($field, ' AS ') !== false) list($field, $asField) = explode(' AS ', $field);
+
+            $field     = trim($field);
+            $asField   = trim($asField);
+            $fieldName = $field;
+            if(strrpos($field, '.') !== false)
+            {
+                $table     = substr($field, 0, strrpos($field, '.'));
+                $fieldName = substr($field, strrpos($field, '.') + 1);
+                if(!empty($out[0]) and in_array($table, $out[2]))
+                {
+                    $realTable = $out[1][array_search($table, $out[2])];
+                    $tableFieldName = str_replace($table . '.', $realTable . '.', $field);
+
+                    if(isset($fields[$fieldName]) && !$asField)
+                    {
+                        $fieldName = str_replace('.', '', $field);
+
+                        $sql = preg_replace(array("/$field/", "/`$field`/"), array("$field AS $fieldName", "`$field` AS $fieldName"), $sql, 1);
+
+                        $field = $tableFieldName;
+                    }
+                }
+
+                if($fieldName == '*') $fieldName = $field;
+            }
+
+            $fieldName = $asField ? $asField : $fieldName;
+
+            $fields[$fieldName] = $field;
+            unset($fields[$i]);
+        }
+
+        $tableSql = preg_replace('/as +\w+/i', ' ', $tableSql);
+        $tableSql = trim(str_replace(array('(', ')', ','), ' ', $tableSql));
+        $tableSql = preg_replace('/ +/', ' ', $tableSql);
+
+        $tables = explode(' ', $tableSql);
+
+        return array('sql' => $sql, 'tables' => $tables, 'fields' => $fields);
+    }
+
+    /**
+     * Parse variables to null string in sql.
+     *
+     * @param string $sql
+     * @access public
+     * @return string
+     */
+    public function parseSqlVars($sql, $filters)
+    {
+        if($filters)
+        {
+            foreach($filters as $filter)
+            {
+                if(!isset($filter['default'])) continue;
+                if(isset($filter['from']) and $filter['from'] == 'query')
+                {
+                    $default = "'{$filter['default']}'";
+                    $sql     = str_replace('$' . $filter['field'], $default, $sql);
+                }
+            }
+        }
+        if(preg_match_all("/[\$]+[a-zA-Z0-9]+/", $sql, $out))
+        {
+            foreach($out[0] as $match) $sql = str_replace($match, "''", $sql);
+        }
+
+        return $sql;
+    }
 }
 
diff --git a/module/pivot/control.php b/module/pivot/control.php
index 8a364763a5..d06bd6b986 100644
--- a/module/pivot/control.php
+++ b/module/pivot/control.php
@@ -71,7 +71,7 @@ class pivot extends control
             
             $pivot->sql = $sql;
 
-            $processSqlData = $this->loadModel('dataview')->getTables($sql);
+            $processSqlData = $this->loadModel('chart')->getTables($sql);
             $sql = $processSqlData['sql'];
 
             list($data, $configs) = $this->pivot->genSheet(json_decode(json_encode($pivot->fieldSettings), true), $pivot->settings, $sql, $filterFormat, json_decode($pivot->langs, true));
diff --git a/module/pivot/view/show.html.php b/module/pivot/view/show.html.php
index bcf7238fdf..2d688e3073 100644
--- a/module/pivot/view/show.html.php
+++ b/module/pivot/view/show.html.php
@@ -46,7 +46,7 @@
       <?php endif;?>
     </div>
     <div id='datagirdInfo' class='datagrid datagrid-padding'>
-      <?php $sql = $this->loadModel('dataview')->parseSqlVars($pivot->sql, $pivot->filters);?>
+      <?php $sql = $this->loadModel('chart')->parseSqlVars($pivot->sql, $pivot->filters);?>
       <?php $this->pivot->buildPivotTable($data, $configs, json_decode(json_encode($pivot->fieldSettings), true), $sql);?>
     </div>
   </div>