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0 gcKind = 0 isUsed = 1 >>>>> Shareable Table Header Data <<<<< tabi = Not Active Calls in SAP Kernel Lines of C Stack in Kernel (Structure Differs on ABAP_dump.txt modified rows. The internal table or work area specified for writing | | the data only 15| WITH HEADER LINE. | | 16| DATA: in dynamic documents . DD_ALV_FREE_TOP ALV use with definable page header .

This work area is called the HEADER line. It is here that all the changes or any of the action on the contents of the table are done. If you have an internal table with header line and you want to address the body of the table, you must indicate this by placing brackets after the table name (itab[]). Otherwise, ABAP interprets the name as the name of the header line and not of the body of the table. You can avoid this potential confusion by using internal tables without 2008-07-23 · Using header line can cause ambiguity in code, for example CLEAR t_itab2 means that you cleared entire contents of table t_itab2, whilst the statement CLEAR t_itab1 will only clear the contents of t_itab1 header. To clear the entire contents of internal table with header line, use brackets after variable statement, ex: CLEAR t_itab1[].

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(with header When you use LOOP AT itab, the header line of the internal table itab is used as the output area (this is only possible for tables with a header line). When you use LOOP AT itab INTO wa, the explicitly specified work area wa is used as the output area. In both cases, the current table line is copied into the output area. header line은 마지막에 with header line을 추가하는것으로, 위와 같은 방법으로 생성할 수 있다.

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DELETE is the statement to delete one or more lines from an ABAP Internal Table.Use the INDEX addition to delete a single line. If we use the INDEX addition and the operation is successful, SY-SUBRC will be set to zero, the line with the corresponding index in the internal table will be deleted and the indexes of the subsequent lines will be reduced by one. 2008-01-30 SAP ABAP - Copying Internal Tables - When we read a record from an internal table with a header line, that record is moved from the table itself into the header line. It is then the header line tha With header line. Data can be directly go to header first and will be placed in body when we used APPEND statement. It can't be used for nesting of internal tables. ex: data: itab like mara occurs 0 with header line.

有无header line的区别就是,header line可以当作一个work area来使用(参照我之前的一个日志).
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wa-field2 = 2. APPEND wa TO itab. 2). itab-field1 = 1. itab-field2 = 2.

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The statement then uses the header line as the work area implicitly. Furthermore, USING KEY cannot be specified without USING KEY. 2006-04-08 · 1) CLEAR . If u use itab as one with header line, this stmt clears contents of header line only. 2) CLEAR []. This clears the body contents of int.table. So in order to access an internal table with header line, we have to call it as ITAB[] or else only the header line is called. Also header line eliminates the use of extra structure.