def collate(expression, collation):
 expr = _literal_as_binds(expression)
 return BinaryExpression(expr, _literal_as_text(collation), operators.collate, type_=expr.type)

def collate ( expression , collation ) : expr = _literal_as_binds ( expression ) return BinaryExpression ( expr , _literal_as_text ( collation ) , operators . collate , type_ = expr . type )
return the clause expression collate collation .