diff --git a/lib/Doctrine/ORM/Persisters/AbstractEntityInheritancePersister.php b/lib/Doctrine/ORM/Persisters/AbstractEntityInheritancePersister.php
index 670cf11e7..84540a337 100644
--- a/lib/Doctrine/ORM/Persisters/AbstractEntityInheritancePersister.php
+++ b/lib/Doctrine/ORM/Persisters/AbstractEntityInheritancePersister.php
@@ -62,7 +62,7 @@ abstract class AbstractEntityInheritancePersister extends BasicEntityPersister
     {
         $columnName = $class->columnNames[$field];
         $sql = $this->_getSQLTableAlias($class->name, $alias == 'r' ? '' : $alias) . '.' . $class->getQuotedColumnName($field, $this->_platform);
-        $columnAlias = $this->_platform->getSQLResultCasing($columnName . $this->_sqlAliasCounter++);
+        $columnAlias = $this->getSQLColumnAlias($columnName);
         $this->_rsm->addFieldResult($alias, $columnAlias, $field, $class->name);
 
         return $sql . ' AS ' . $columnAlias;
@@ -70,10 +70,9 @@ abstract class AbstractEntityInheritancePersister extends BasicEntityPersister
 
     protected function getSelectJoinColumnSQL($tableAlias, $joinColumnName, $className)
     {
-        $columnAlias = $joinColumnName . $this->_sqlAliasCounter++;
-        $resultColumnName = $this->_platform->getSQLResultCasing($columnAlias);
-        $this->_rsm->addMetaResult('r', $resultColumnName, $joinColumnName);
+        $columnAlias = $this->getSQLColumnAlias($joinColumnName);
+        $this->_rsm->addMetaResult('r', $columnAlias, $joinColumnName);
         
         return $tableAlias . '.' . $joinColumnName . ' AS ' . $columnAlias;
     }
-}
\ No newline at end of file
+}
diff --git a/lib/Doctrine/ORM/Persisters/BasicEntityPersister.php b/lib/Doctrine/ORM/Persisters/BasicEntityPersister.php
index 0379ccf56..9fa2e3dff 100644
--- a/lib/Doctrine/ORM/Persisters/BasicEntityPersister.php
+++ b/lib/Doctrine/ORM/Persisters/BasicEntityPersister.php
@@ -1060,8 +1060,7 @@ class BasicEntityPersister
             foreach ($assoc['targetToSourceKeyColumns'] as $srcColumn) {
                 if ($columnList) $columnList .= ', ';
 
-                $columnAlias = $srcColumn . $this->_sqlAliasCounter++;
-                $resultColumnName = $this->_platform->getSQLResultCasing($columnAlias);
+                $resultColumnName = $this->getSQLColumnAlias($srcColumn);
                 $columnList .= $this->_getSQLTableAlias($class->name, ($alias == 'r' ? '' : $alias) )  
                              . '.' . $srcColumn . ' AS ' . $resultColumnName;
                 $this->_rsm->addMetaResult($alias, $resultColumnName, $srcColumn, isset($assoc['id']) && $assoc['id'] === true);
@@ -1180,11 +1179,10 @@ class BasicEntityPersister
      */
     protected function _getSelectColumnSQL($field, ClassMetadata $class, $alias = 'r')
     {
-        $columnName = $class->columnNames[$field];
         $sql = $this->_getSQLTableAlias($class->name, $alias == 'r' ? '' : $alias) 
              . '.' . $class->getQuotedColumnName($field, $this->_platform);
-        $columnAlias = $this->_platform->getSQLResultCasing($columnName . $this->_sqlAliasCounter++);
-        
+        $columnAlias = $this->getSQLColumnAlias($class->columnNames[$field]);
+
         $this->_rsm->addFieldResult($alias, $columnAlias, $field);
 
         return $sql . ' AS ' . $columnAlias;
@@ -1500,4 +1498,19 @@ class BasicEntityPersister
         
         return (bool) $this->_conn->fetchColumn($sql, $params);
     }
+
+    /**
+     * Gets an SQL column alias for a column name.
+     *
+     * @param string $columnName
+     * @return string
+     */
+    public function getSQLColumnAlias($columnName)
+    {
+        // Trim the column alias to the maximum identifier length of the platform.
+        // If the alias is to long, characters are cut off from the beginning.
+        return $this->_platform->getSQLResultCasing(
+            substr($columnName . $this->_sqlAliasCounter++, -$this->_platform->getMaxIdentifierLength())
+        );
+    }
 }
diff --git a/lib/Doctrine/ORM/Query/SqlWalker.php b/lib/Doctrine/ORM/Query/SqlWalker.php
index 188350197..6dc662493 100644
--- a/lib/Doctrine/ORM/Query/SqlWalker.php
+++ b/lib/Doctrine/ORM/Query/SqlWalker.php
@@ -229,7 +229,11 @@ class SqlWalker implements TreeWalker
      */
     public function getSQLColumnAlias($columnName)
     {
-        return $columnName . $this->_aliasCounter++;
+        // Trim the column alias to the maximum identifier length of the platform.
+        // If the alias is to long, characters are cut off from the beginning.
+        return $this->_platform->getSQLResultCasing(
+            substr($columnName . $this->_aliasCounter++, -$this->_platform->getMaxIdentifierLength())
+        );
     }
 
     /**
@@ -535,7 +539,6 @@ class SqlWalker implements TreeWalker
                 
                 $sqlSelectExpressions[] = $tblAlias . '.' . $discrColumn['name'] . ' AS ' . $columnAlias;
 
-                $columnAlias = $this->_platform->getSQLResultCasing($columnAlias);
                 $this->_rsm->setDiscriminatorColumn($dqlAlias, $columnAlias);
                 $this->_rsm->addMetaResult($dqlAlias, $columnAlias, $discrColumn['fieldName']);
 
@@ -556,8 +559,7 @@ class SqlWalker implements TreeWalker
                                 
                                 $sqlSelectExpressions[] = $sqlTableAlias . '.' . $srcColumn . ' AS ' . $columnAlias;
                                 
-                                $columnAlias = $this->_platform->getSQLResultCasing($columnAlias);
-                                $this->_rsm->addMetaResult($dqlAlias, $this->_platform->getSQLResultCasing($columnAlias), $srcColumn, (isset($assoc['id']) && $assoc['id'] === true));
+                                $this->_rsm->addMetaResult($dqlAlias, $columnAlias, $srcColumn, (isset($assoc['id']) && $assoc['id'] === true));
                             }
                         }
                     }
@@ -574,8 +576,7 @@ class SqlWalker implements TreeWalker
                                 
                                 $sqlSelectExpressions[] = $sqlTableAlias . '.' . $srcColumn . ' AS ' . $columnAlias;
                                 
-                                $columnAlias = $this->_platform->getSQLResultCasing($columnAlias);
-                                $this->_rsm->addMetaResult($dqlAlias, $this->_platform->getSQLResultCasing($columnAlias), $srcColumn, (isset($assoc['id']) && $assoc['id'] === true));
+                                $this->_rsm->addMetaResult($dqlAlias, $columnAlias, $srcColumn, (isset($assoc['id']) && $assoc['id'] === true));
                             }
                         }
                     }
@@ -1006,7 +1007,6 @@ class SqlWalker implements TreeWalker
 
             $columnAlias = $this->getSQLColumnAlias($columnName);
             $sql .= $sqlTableAlias . '.' . $columnName . ' AS ' . $columnAlias;
-            $columnAlias = $this->_platform->getSQLResultCasing($columnAlias);
             
             if ( ! $hidden) {
                 $this->_rsm->addScalarResult($columnAlias, $resultAlias);
@@ -1018,12 +1018,10 @@ class SqlWalker implements TreeWalker
                 $resultAlias = $selectExpression->fieldIdentificationVariable;
             }
 
-            $columnAlias = 'sclr' . $this->_aliasCounter++;
+            $columnAlias = $this->getSQLColumnAlias('sclr');
             $sql .= $this->walkAggregateExpression($expr) . ' AS ' . $columnAlias;
             $this->_scalarResultAliasMap[$resultAlias] = $columnAlias;
 
-            $columnAlias = $this->_platform->getSQLResultCasing($columnAlias);
-
             if ( ! $hidden) {
                 $this->_rsm->addScalarResult($columnAlias, $resultAlias);
             }
@@ -1034,12 +1032,10 @@ class SqlWalker implements TreeWalker
                 $resultAlias = $selectExpression->fieldIdentificationVariable;
             }
 
-            $columnAlias = 'sclr' . $this->_aliasCounter++;
+            $columnAlias = $this->getSQLColumnAlias('sclr');
             $sql .= '(' . $this->walkSubselect($expr) . ') AS '.$columnAlias;
             $this->_scalarResultAliasMap[$resultAlias] = $columnAlias;
 
-            $columnAlias = $this->_platform->getSQLResultCasing($columnAlias);
-            
             if ( ! $hidden) {
                 $this->_rsm->addScalarResult($columnAlias, $resultAlias);
             }
@@ -1050,12 +1046,10 @@ class SqlWalker implements TreeWalker
                 $resultAlias = $selectExpression->fieldIdentificationVariable;
             }
 
-            $columnAlias = 'sclr' . $this->_aliasCounter++;
+            $columnAlias = $this->getSQLColumnAlias('sclr');
             $sql .= $this->walkFunction($expr) . ' AS ' . $columnAlias;
             $this->_scalarResultAliasMap[$resultAlias] = $columnAlias;
 
-            $columnAlias = $this->_platform->getSQLResultCasing($columnAlias);
-            
             if ( ! $hidden) {
                 $this->_rsm->addScalarResult($columnAlias, $resultAlias);
             }
@@ -1072,18 +1066,15 @@ class SqlWalker implements TreeWalker
                 $resultAlias = $selectExpression->fieldIdentificationVariable;
             }
 
-            $columnAlias = 'sclr' . $this->_aliasCounter++;
-            
+            $columnAlias = $this->getSQLColumnAlias('sclr');
             if ($expr instanceof AST\Literal) {
                 $sql .= $this->walkLiteral($expr) . ' AS ' .$columnAlias;
             } else {
                 $sql .= $this->walkSimpleArithmeticExpression($expr) . ' AS ' . $columnAlias;
             }
-            
+
             $this->_scalarResultAliasMap[$resultAlias] = $columnAlias;
 
-            $columnAlias = $this->_platform->getSQLResultCasing($columnAlias);
-            
             if ( ! $hidden) {
                 $this->_rsm->addScalarResult($columnAlias, $resultAlias);
             }
@@ -1099,14 +1090,11 @@ class SqlWalker implements TreeWalker
                 $resultAlias = $selectExpression->fieldIdentificationVariable;
             }
 
-            $columnAlias = 'sclr' . $this->_aliasCounter++;
-            
+            $columnAlias = $this->getSQLColumnAlias('sclr');
             $sql .= $this->walkCaseExpression($expr) . ' AS ' . $columnAlias;
-            
+
             $this->_scalarResultAliasMap[$resultAlias] = $columnAlias;
 
-            $columnAlias = $this->_platform->getSQLResultCasing($columnAlias);
-            
             if ( ! $hidden) {
                 $this->_rsm->addScalarResult($columnAlias, $resultAlias);
             }
@@ -1146,8 +1134,6 @@ class SqlWalker implements TreeWalker
                 $sql .= $sqlTableAlias . '.' . $class->getQuotedColumnName($fieldName, $this->_platform)
                       . ' AS ' . $columnAlias;
 
-                $columnAlias = $this->_platform->getSQLResultCasing($columnAlias);
-                
                 $this->_rsm->addFieldResult($dqlAlias, $columnAlias, $fieldName, $class->name);
             }
 
@@ -1171,7 +1157,6 @@ class SqlWalker implements TreeWalker
                         $sql .= $sqlTableAlias . '.' . $subClass->getQuotedColumnName($fieldName, $this->_platform)
                                 . ' AS ' . $columnAlias;
 
-                        $columnAlias = $this->_platform->getSQLResultCasing($columnAlias);
                         $this->_rsm->addFieldResult($dqlAlias, $columnAlias, $fieldName, $subClassName);
                     }
 
@@ -1185,7 +1170,7 @@ class SqlWalker implements TreeWalker
                                 $columnAlias = $this->getSQLColumnAlias($srcColumn);
                                 $sql .= $sqlTableAlias . '.' . $srcColumn . ' AS ' . $columnAlias;
                                 
-                                $this->_rsm->addMetaResult($dqlAlias, $this->_platform->getSQLResultCasing($columnAlias), $srcColumn);
+                                $this->_rsm->addMetaResult($dqlAlias, $columnAlias, $srcColumn);
                             }
                         }
                     }
@@ -1312,7 +1297,7 @@ class SqlWalker implements TreeWalker
                 $alias = $simpleSelectExpression->fieldIdentificationVariable;
             }
 
-            $columnAlias = 'sclr' . $this->_aliasCounter++;
+            $columnAlias = $this->getSQLColumnAlias('sclr');
             $sql .= '(' . $this->walkSubselect($expr) . ') AS ' . $columnAlias;
             $this->_scalarResultAliasMap[$alias] = $columnAlias;
         } else if ($expr instanceof AST\Functions\FunctionNode) {
@@ -1322,7 +1307,7 @@ class SqlWalker implements TreeWalker
                 $alias = $simpleSelectExpression->fieldIdentificationVariable;
             }
 
-            $columnAlias = 'sclr' . $this->_aliasCounter++;
+            $columnAlias = $this->getSQLColumnAlias('sclr');
             $sql .= $this->walkFunction($expr) . ' AS ' . $columnAlias;
             $this->_scalarResultAliasMap[$alias] = $columnAlias;
         } else if (
@@ -1337,7 +1322,7 @@ class SqlWalker implements TreeWalker
                 $alias = $simpleSelectExpression->fieldIdentificationVariable;
             }
 
-            $columnAlias = 'sclr' . $this->_aliasCounter++;
+            $columnAlias = $this->getSQLColumnAlias('sclr');
             $sql .= $this->walkSimpleArithmeticExpression($expr) . ' AS ' . $columnAlias;
             $this->_scalarResultAliasMap[$alias] = $columnAlias;
         } else if (
@@ -1352,7 +1337,7 @@ class SqlWalker implements TreeWalker
                 $alias = $simpleSelectExpression->fieldIdentificationVariable;
             }
 
-            $columnAlias = 'sclr' . $this->_aliasCounter++;
+            $columnAlias = $this->getSQLColumnAlias('sclr');
             $sql .= $this->walkCaseExpression($expr) . ' AS ' . $columnAlias;
             
             $this->_scalarResultAliasMap[$alias] = $columnAlias;
diff --git a/tests/Doctrine/Tests/ORM/Query/SelectSqlGenerationTest.php b/tests/Doctrine/Tests/ORM/Query/SelectSqlGenerationTest.php
index 53002a8fc..e3ea9c004 100644
--- a/tests/Doctrine/Tests/ORM/Query/SelectSqlGenerationTest.php
+++ b/tests/Doctrine/Tests/ORM/Query/SelectSqlGenerationTest.php
@@ -729,12 +729,12 @@ class SelectSqlGenerationTest extends \Doctrine\Tests\OrmTestCase
 
         $this->assertSqlGeneration(
             "SELECT b FROM Doctrine\Tests\Models\Generic\BooleanModel b WHERE b.booleanField = true",
-            "SELECT b0_.id AS id0, b0_.booleanField AS booleanField1 FROM boolean_model b0_ WHERE b0_.booleanField = true"
+            "SELECT b0_.id AS id0, b0_.booleanField AS booleanfield1 FROM boolean_model b0_ WHERE b0_.booleanField = true"
         );
 
         $this->assertSqlGeneration(
             "SELECT b FROM Doctrine\Tests\Models\Generic\BooleanModel b WHERE b.booleanField = false",
-            "SELECT b0_.id AS id0, b0_.booleanField AS booleanField1 FROM boolean_model b0_ WHERE b0_.booleanField = false"
+            "SELECT b0_.id AS id0, b0_.booleanField AS booleanfield1 FROM boolean_model b0_ WHERE b0_.booleanField = false"
         );
 
         $this->_em->getConnection()->setDatabasePlatform($oldPlat);
@@ -877,7 +877,7 @@ class SelectSqlGenerationTest extends \Doctrine\Tests\OrmTestCase
 
         $this->assertSqlGeneration(
             "SELECT u FROM Doctrine\Tests\Models\CMS\CmsUser u WHERE u.username = 'gblanco'",
-            "SELECT c0_.id AS id0, c0_.status AS status1, c0_.username AS username2, c0_.name AS name3 ".
+            "SELECT c0_.id AS ID0, c0_.status AS STATUS1, c0_.username AS USERNAME2, c0_.name AS NAME3 ".
             "FROM cms_users c0_ WHERE c0_.username = 'gblanco' FOR UPDATE",
             array(Query::HINT_LOCK_MODE => \Doctrine\DBAL\LockMode::PESSIMISTIC_READ)
         );
@@ -1251,6 +1251,17 @@ class SelectSqlGenerationTest extends \Doctrine\Tests\OrmTestCase
             array(Query::HINT_FORCE_PARTIAL_LOAD => false)
         );
     }
+
+    /**
+     * @group DDC-1384
+     */
+    function testAliasDoesNotExceedPlatformDefinedLength()
+    {
+        $this->assertSqlGeneration(
+            'SELECT m FROM ' . __NAMESPACE__ .  '\\DDC1384Model m',
+            "SELECT d0_.aVeryLongIdentifierThatShouldBeShortenedByTheSQLWalker_fooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo AS fooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo0 FROM DDC1384Model d0_"
+        );
+    }
 }
 
 
@@ -1281,3 +1292,15 @@ class MyAbsFunction extends \Doctrine\ORM\Query\AST\Functions\FunctionNode
         $parser->match(\Doctrine\ORM\Query\Lexer::T_CLOSE_PARENTHESIS);
     }
 }
+/**
+ * @Entity
+ */
+class DDC1384Model
+{
+    /**
+     * @Id
+     * @Column(type="integer")
+     * @GeneratedValue
+     */
+    protected $aVeryLongIdentifierThatShouldBeShortenedByTheSQLWalker_fooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo;
+}