但是,在运行时,当使用CLEAR、FREE、LOCAL、REFRESH、SORT、DELETE…WHERE等语句以及对itab的所有类型的赋值替换整个表体时,大多数情况下都会发生运行时错误。 ABAP指南编程指南 循环处理 笔记 ◾ 如果使用引用变量指定内部表itab,则使用条目中引用的表完全执行循环。对引用变量的任何更改都不会对循环产生影
排序表按INDEX 优化 该方式需要对两个内表都排序, 性能最好, 代码逻辑有点复杂. 并且有使用限制,LT_A-F1内容不能重复(如果内表LT_A 中的F1 内容重复. 则后面的行无法获取数据 ). 使用时请务必确保LT_A 内容不重复. 如下图: 如果LT_A 内容重复. 则INDEX 优化的方式最终获取的内容就不正确了. 下图中...
In each loop pass, the system field sy-tabix contains the row number of the current row in the primary table index. Hashed tables The rows are processed in the order in which they were inserted in the table, and by the sort order used after the statement SORT. In each loop pass, ...
ABAP表格控制(Table Control)和步循环(STEP-LOOP) 表格控制(Table Control)和步循环 1.两个标准Demo: SAPMTZ60, SAPMTZ61 2.简介 3.建立Table Control程序的基本流程 4.使用步循环 5.表格控制(Table Control)和步循环注意事项 6.在屏幕表格中循环和在内表与屏幕表格中同时循环的区别 7.确定屏幕循环的记录...
This can be done using the system class CL_ABAP_DYN_PRG or the predefined function escape. See Security Risks of Input from Outside. Note The dynamic WHERE conditions is not evaluated for a blank table for optimization reasons. Therefore, if an internal table is blank, and a logical ...
--->是的，这是ABAP Open SQL 特有的功能。为什么普通的标准表不可以?--->如果内表有根range table 一样的结构的话，那么也是可以的。range table也是一种内表，只不过它的表结构被特定化了。还有,RANGE表使用时除了数据量的要求外还要注意什么? INDEX ,MODIFY之类的可以用吗?效率怎样?--->注意...
SmartForm: Table or loop index (counter) Former Member on 2007 Aug 22 0 Kudos 2,675 SAP Managed Tags: NW ABAP Print and Output Management I need to know what the system field is for the counter inside a loop or table. I tried sy-tabix but that isn't recognized in ...
The great new addition to old and gold LOOP AT is a GROUP BY in ABAP 740. This is an amazing addition to LOOP AT. Lets check it out! Introduction LOOP AT must be one of most commonly used syntax. You must be using that often as well. In ABAP 740, this new great addition GROUP ...
FORM frm_sort_index. GET RUN TIME FIELD DATA(time1). SORT:gt_a BY col1, gt_b BY col1. LOOP AT gt_a INTO wa_a. LOOP AT gt_b INTO wa_b FROM sy-tabix. IF wa_a-col1 <> wa_b-col1. EXIT. ENDIF. wa_c-col1 = wa_a-col1. ...
ABAP Testing and Analysis You should avoid nested loops, as they are really inefficient. You may do it like this: SORTitabBYkunnr.LOOPATitabINTOw_tab.READTABLEitab2INTOw_tab2WITHKEYkunnr=w_tab-kunnrBINARYSEARCH.itab_index=sy-tabix.WHILEsy-subrc=0.itab_index=itab_index+1.READTABLEitab...