Clear order by expressions

src/query/delete.rs

@@ -296,6 +296,11 @@ impl OrderedStatement for DeleteStatement {
         self.orders.push(order);
         self
     }
+
+    fn clear_order_by(&mut self) -> &mut Self {
+        self.orders = Vec::new();
+        self
+    }
 }
 
 impl ConditionalStatement for DeleteStatement {

src/query/ordered.rs

@@ -5,6 +5,9 @@ pub trait OrderedStatement {
     // Implementation for the trait.
     fn add_order_by(&mut self, order: OrderExpr) -> &mut Self;
 
+    /// Clear order expressions
+    fn clear_order_by(&mut self) -> &mut Self;
+
     /// Order by column.
     ///
     /// # Examples

src/query/select.rs

@@ -2246,6 +2246,11 @@ impl OrderedStatement for SelectStatement {
         self.orders.push(order);
         self
     }
+
+    fn clear_order_by(&mut self) -> &mut Self {
+        self.orders = Vec::new();
+        self
+    }
 }
 
 impl ConditionalStatement for SelectStatement {

src/query/update.rs

@@ -436,6 +436,11 @@ impl OrderedStatement for UpdateStatement {
         self.orders.push(order);
         self
     }
+
+    fn clear_order_by(&mut self) -> &mut Self {
+        self.orders = Vec::new();
+        self
+    }
 }
 
 impl ConditionalStatement for UpdateStatement {

src/query/window.rs

@@ -226,4 +226,9 @@ impl OrderedStatement for WindowStatement {
         self.order_by.push(order);
         self
     }
+
+    fn clear_order_by(&mut self) -> &mut Self {
+        self.order_by = Vec::new();
+        self
+    }
 }