diff --git a/querydsl-core/src/main/java/com/mysema/query/types/Operation.java b/querydsl-core/src/main/java/com/mysema/query/types/Operation.java
index 6faabe3ff..3da9772ca 100644
--- a/querydsl-core/src/main/java/com/mysema/query/types/Operation.java
+++ b/querydsl-core/src/main/java/com/mysema/query/types/Operation.java
@@ -15,6 +15,13 @@ import java.util.List;
  * @version $Id$
  */
 public interface Operation<RT> {
+    /**
+     * Create an alias for the operation
+     * 
+     * @return
+     */
+    Expr<RT> as(Path<RT> alias);
+    
     /**
      * Cast to {@link Expr}
      * 
diff --git a/querydsl-core/src/main/java/com/mysema/query/types/expr/OBoolean.java b/querydsl-core/src/main/java/com/mysema/query/types/expr/OBoolean.java
index 82b4446d3..c269bc4ea 100644
--- a/querydsl-core/src/main/java/com/mysema/query/types/expr/OBoolean.java
+++ b/querydsl-core/src/main/java/com/mysema/query/types/expr/OBoolean.java
@@ -12,6 +12,7 @@ import com.mysema.query.types.Expr;
 import com.mysema.query.types.Operation;
 import com.mysema.query.types.Operator;
 import com.mysema.query.types.Ops;
+import com.mysema.query.types.Path;
 import com.mysema.query.types.Visitor;
 
 /**
@@ -76,5 +77,10 @@ public class OBoolean extends EBoolean implements Operation<Boolean> {
     public int hashCode(){
         return getType().hashCode();
     }
+
+    @Override
+    public Expr<Boolean> as(Path<Boolean> alias) {
+        return OBoolean.create((Operator)Ops.ALIAS, this, alias.asExpr());
+    }
     
 }
\ No newline at end of file
diff --git a/querydsl-core/src/main/java/com/mysema/query/types/expr/OComparable.java b/querydsl-core/src/main/java/com/mysema/query/types/expr/OComparable.java
index 9027606b6..b611f2947 100644
--- a/querydsl-core/src/main/java/com/mysema/query/types/expr/OComparable.java
+++ b/querydsl-core/src/main/java/com/mysema/query/types/expr/OComparable.java
@@ -11,6 +11,8 @@ import java.util.List;
 import com.mysema.query.types.Expr;
 import com.mysema.query.types.Operation;
 import com.mysema.query.types.Operator;
+import com.mysema.query.types.Ops;
+import com.mysema.query.types.Path;
 import com.mysema.query.types.Visitor;
 
 /**
@@ -78,4 +80,10 @@ public class OComparable<D extends Comparable<?>> extends
     public int hashCode(){
         return getType().hashCode();
     }
+    
+    @SuppressWarnings("unchecked")
+    @Override
+    public EComparable<D> as(Path<D> alias) {
+        return OComparable.create(getType(),(Operator)Ops.ALIAS, this, alias.asExpr());
+    }
 }
\ No newline at end of file
diff --git a/querydsl-core/src/main/java/com/mysema/query/types/expr/ODate.java b/querydsl-core/src/main/java/com/mysema/query/types/expr/ODate.java
index 05465c034..9a2f6be6c 100644
--- a/querydsl-core/src/main/java/com/mysema/query/types/expr/ODate.java
+++ b/querydsl-core/src/main/java/com/mysema/query/types/expr/ODate.java
@@ -11,6 +11,8 @@ import java.util.List;
 import com.mysema.query.types.Expr;
 import com.mysema.query.types.Operation;
 import com.mysema.query.types.Operator;
+import com.mysema.query.types.Ops;
+import com.mysema.query.types.Path;
 import com.mysema.query.types.Visitor;
 
 /**
@@ -78,4 +80,10 @@ public class ODate<D extends Comparable<?>> extends
     public int hashCode(){
         return getType().hashCode();
     }
+    
+    @SuppressWarnings("unchecked")
+    @Override
+    public EDate<D> as(Path<D> alias) {
+        return ODate.create(getType(),(Operator)Ops.ALIAS, this, alias.asExpr());
+    }
 }
diff --git a/querydsl-core/src/main/java/com/mysema/query/types/expr/ODateTime.java b/querydsl-core/src/main/java/com/mysema/query/types/expr/ODateTime.java
index e6fd721fe..b5f260b67 100644
--- a/querydsl-core/src/main/java/com/mysema/query/types/expr/ODateTime.java
+++ b/querydsl-core/src/main/java/com/mysema/query/types/expr/ODateTime.java
@@ -11,6 +11,8 @@ import java.util.List;
 import com.mysema.query.types.Expr;
 import com.mysema.query.types.Operation;
 import com.mysema.query.types.Operator;
+import com.mysema.query.types.Ops;
+import com.mysema.query.types.Path;
 import com.mysema.query.types.Visitor;
 
 /**
@@ -79,4 +81,10 @@ public class ODateTime<D extends Comparable<?>> extends
     public int hashCode(){
         return getType().hashCode();
     }
+
+    @SuppressWarnings("unchecked")
+    @Override
+    public EDateTime<D> as(Path<D> alias) {
+        return ODateTime.create(getType(),(Operator)Ops.ALIAS, this, alias.asExpr());
+    }
 }
diff --git a/querydsl-core/src/main/java/com/mysema/query/types/expr/ONumber.java b/querydsl-core/src/main/java/com/mysema/query/types/expr/ONumber.java
index 102fa2c1d..e664b7362 100644
--- a/querydsl-core/src/main/java/com/mysema/query/types/expr/ONumber.java
+++ b/querydsl-core/src/main/java/com/mysema/query/types/expr/ONumber.java
@@ -11,6 +11,8 @@ import java.util.List;
 import com.mysema.query.types.Expr;
 import com.mysema.query.types.Operation;
 import com.mysema.query.types.Operator;
+import com.mysema.query.types.Ops;
+import com.mysema.query.types.Path;
 import com.mysema.query.types.Visitor;
 
 /**
@@ -78,4 +80,10 @@ public class ONumber<D extends Number & Comparable<?>>
     public int hashCode(){
         return getType().hashCode();
     }
+    
+    @SuppressWarnings("unchecked")
+    @Override
+    public ENumber<D> as(Path<D> alias) {
+        return ONumber.create(getType(),(Operator)Ops.ALIAS, this, alias.asExpr());
+    }
 }
\ No newline at end of file
diff --git a/querydsl-core/src/main/java/com/mysema/query/types/expr/OSimple.java b/querydsl-core/src/main/java/com/mysema/query/types/expr/OSimple.java
index 901e53bda..e58a571a2 100644
--- a/querydsl-core/src/main/java/com/mysema/query/types/expr/OSimple.java
+++ b/querydsl-core/src/main/java/com/mysema/query/types/expr/OSimple.java
@@ -11,6 +11,8 @@ import java.util.List;
 import com.mysema.query.types.Expr;
 import com.mysema.query.types.Operation;
 import com.mysema.query.types.Operator;
+import com.mysema.query.types.Ops;
+import com.mysema.query.types.Path;
 import com.mysema.query.types.Visitor;
 
 /**
@@ -77,4 +79,10 @@ public class OSimple<D> extends ESimple<D> implements Operation<D> {
     public int hashCode(){
         return getType().hashCode();
     }
+    
+    @SuppressWarnings("unchecked")
+    @Override
+    public Expr<D> as(Path<D> alias) {
+        return OSimple.create(getType(),(Operator)Ops.ALIAS, this, alias.asExpr());
+    }
 }
\ No newline at end of file
diff --git a/querydsl-core/src/main/java/com/mysema/query/types/expr/OString.java b/querydsl-core/src/main/java/com/mysema/query/types/expr/OString.java
index 416dd3db7..e754705ab 100644
--- a/querydsl-core/src/main/java/com/mysema/query/types/expr/OString.java
+++ b/querydsl-core/src/main/java/com/mysema/query/types/expr/OString.java
@@ -11,6 +11,8 @@ import java.util.List;
 import com.mysema.query.types.Expr;
 import com.mysema.query.types.Operation;
 import com.mysema.query.types.Operator;
+import com.mysema.query.types.Ops;
+import com.mysema.query.types.Path;
 import com.mysema.query.types.Visitor;
 
 /**
@@ -66,4 +68,9 @@ public class OString extends EString implements Operation<String> {
     public int hashCode(){
         return getType().hashCode();
     }
+    
+    @Override
+    public EString as(Path<String> alias) {
+        return OString.create((Operator)Ops.ALIAS, this, alias.asExpr());
+    }
 }
\ No newline at end of file
diff --git a/querydsl-core/src/main/java/com/mysema/query/types/expr/OTime.java b/querydsl-core/src/main/java/com/mysema/query/types/expr/OTime.java
index 1a53b242e..d24a9b28e 100644
--- a/querydsl-core/src/main/java/com/mysema/query/types/expr/OTime.java
+++ b/querydsl-core/src/main/java/com/mysema/query/types/expr/OTime.java
@@ -11,6 +11,8 @@ import java.util.List;
 import com.mysema.query.types.Expr;
 import com.mysema.query.types.Operation;
 import com.mysema.query.types.Operator;
+import com.mysema.query.types.Ops;
+import com.mysema.query.types.Path;
 import com.mysema.query.types.Visitor;
 
 /**
@@ -77,4 +79,10 @@ public class OTime<D extends Comparable<?>> extends ETime<D> implements Operatio
     public int hashCode(){
         return getType().hashCode();
     }
+    
+    @SuppressWarnings("unchecked")
+    @Override
+    public ETime<D> as(Path<D> alias) {
+        return OTime.create(getType(),(Operator)Ops.ALIAS, this, alias.asExpr());
+    }
 }
diff --git a/querydsl-core/src/main/java/com/mysema/query/types/expr/OperationMixin.java b/querydsl-core/src/main/java/com/mysema/query/types/expr/OperationMixin.java
index d49306724..fb43872f6 100644
--- a/querydsl-core/src/main/java/com/mysema/query/types/expr/OperationMixin.java
+++ b/querydsl-core/src/main/java/com/mysema/query/types/expr/OperationMixin.java
@@ -12,6 +12,7 @@ import java.util.List;
 import com.mysema.query.types.Expr;
 import com.mysema.query.types.Operation;
 import com.mysema.query.types.Operator;
+import com.mysema.query.types.Path;
 
 /**
  * @author tiwe
@@ -78,5 +79,10 @@ public final class OperationMixin<RT> implements Operation<RT>, Serializable {
     public int hashCode(){
         return self.getType().hashCode();
     }
+    
+    @Override
+    public Expr<RT> as(Path<RT> alias) {
+        throw new UnsupportedOperationException();
+    }
 
 }