Removed unnecessary joins for global attributes (#1309)

Author: Sekiphp

app/code/core/Mage/Catalog/Model/Resource/Abstract.php

@@ -601,6 +601,7 @@ public function getAttributeRawValue($entityId, $attribute, $store)
         $typedAttributes    = array();
         $staticTable        = null;
         $adapter            = $this->_getReadAdapter();
+        $getPerStore        = false;
 
         foreach ($attribute as $_attribute) {
             /* @var Mage_Catalog_Model_Entity_Attribute $attribute */
@@ -612,6 +613,10 @@ public function getAttributeRawValue($entityId, $attribute, $store)
             $attrTable     = $_attribute->getBackend()->getTable();
             $isStatic      = $_attribute->getBackend()->isStatic();
 
+            if (!$getPerStore && $_attribute->getIsGlobal() != Mage_Catalog_Model_Resource_Eav_Attribute::SCOPE_GLOBAL) {
+                $getPerStore = true;
+            }
+
             if ($isStatic) {
                 $staticAttributes[] = $attributeCode;
                 $staticTable = $attrTable;
@@ -654,7 +659,7 @@ public function getAttributeRawValue($entityId, $attribute, $store)
                     'entity_id'      => $entityId,
                 );
 
-                if ($store != $this->getDefaultStoreId()) {
+                if ($getPerStore && $store != $this->getDefaultStoreId()) {
                     $valueExpr = $adapter->getCheckSql(
                         'store_value.value IS NULL',
                         'default_value.value',