指標可以實現但是不推薦

例如:(部分程式碼)

 for ll_a = 1 to ll_count
    ll_b = ll_i +  ll_a  //插入行行號先下移一位
    dw_main.insertrow(ll_b)
            select a.part,a.description,a.specification,a.effbegdate,a.effenddate
            into :ls_repcomponent,:ls_description,:ls_specification,:ldt_effbegdate,:ldt_effenddate
            from
           (select bom10110.part,inv11100.description,inv11100.specification,bom10110.effbegdate,bom10110.effenddate,row_number() over (ORDER BY bom10110.part ASC) AS seq  //新增臨時序列號
           from bom10110,inv11100
           where bom10110.part = inv11100.part and
                    bom10110.parent = :ls_parent and
                    bom10110.component = :ls_component) a
            where a.seq=:ll_a; //讀取每一行資料
             sqlca.of_commit()

next

pb中for迴圈的遍歷,要把想要查詢的資料顯示出來.  先給查詢出的資料設定一個臨時序列號.  通過序列號迴圈遍歷每一行資料,相當於與一個指標的效果

sql server中:

//方法一  (oracle貌似也可以沒試驗 以後待驗證)

SELECT ROW_NUMBER() over(order by 列名) as 序列號名稱    

       列名,列名......
FROM客戶;

//方法二

SELECT RANK() OVER (ORDER BY 列名 DESC) AS 序號,
         列名,列名......
FROM客戶;

mysql中 :

    select   (@i:[email protected]+1)   as   i,table_name.*   from   table_name,(select   @i:=0)   as   it 

    後面可加order 排序