DB2 组内分组排序，游标使用

CREATE PROCEDURE Sys_Init_tblaccountsuser_sortid ()


P1: BEGIN
    declare not_found condition for sqlstate '02000';
    DECLARE V_RK_ID INTEGER DEFAULT 0;
    DECLARE V_ID  INTEGER DEFAULT 0; 
    DECLARE V_AT_END INT DEFAULT 0;

    DECLARE CUR1 CURSOR WITH RETURN TO CLIENT FOR
        select rk,id from  (select rank() over(partition by ouid order by id asc) rk,t.* from tracing.tblaccountsuser t);
    
    
    declare continue handler for not_found set V_AT_END=1;  
    -- Cursor left open for client application
    OPEN CUR1;
    ins_loop:
        LOOP
        FETCH CUR1 INTO V_RK_ID,V_ID;
            IF V_AT_END <>0 THEN
                LEAVE ins_loop;
            END IF;
            
            update tblaccountsuser set  SORTID = V_RK_ID where id = V_ID ;
        END LOOP;
    CLOSE CUR1;
END P1