@@ -83,6 +83,11 @@ Alias table &. Alias column = UnsafeExpression $
8383def :: Expression params '[] ('Optional (nullity ty))
8484def = UnsafeExpression "DEFAULT"
8585
86+notDef
87+ :: Expression params '[] ('Required (nullity ty))
88+ -> Expression params '[] ('Optional (nullity ty))
89+notDef = UnsafeExpression . renderExpression
90+
8691null :: Expression params tables (optionality ('Null ty))
8792null = UnsafeExpression "NULL"
8893