大家帮我看看 我编的pg函数 菜鸟?报错

CREATE OR REPLACE FUNCTION "Account_New"( 
IN LoginName char varying(50),
IN Password1 char varying(500),
IN DisplayName char varying(50),
IN ISuperAdmin bool,
IN Status integer,
IN Salt char varying(100),
IN AccountType integer,
IN Phone char varying(50),
IN Tel char varying(50),
IN Email char varying(500),
IN QQ char varying(50),
IN Gender int,
IN IDCode char varying(100),
IN Address char varying(200),
IN Remarks text,
IN CreatedBy bigint,
IN CreatedIp char varying(50)
)
returns void
AS
$BODY$


insert into "Account"("LoginName","Password","DisplayName","ISuperAdmin","Status","Salt","AccountType","Phone","Tel","Email","QQ","Gender","IDCode","Address","Remarks","CreatedBy","CreatedIp")
values($1,$2,$3,$4,$5,$6,$7,$8,$9,$10,$11,$12,$13,$14,$15,$16,$17);


$BODY$
  LANGUAGE sql VOLATILE
  COST 100

  ROWS 1000;

为什么会报错啊ERROR:  ROWS is not applicable when function does not return a set