(1)
data: begin of itab occurs 0,
a type c,
end of itab.
data: begin of itab occurs 0.
include structure mara.
include type ty_self.
data a type c.
data:end of itab.
(2)
DATA itab TYPE TABLE OFt-tab WITH HEADER LINE.
(3)
DATA itablike table of stuc WITH HEADER LINE.
DATA itab TYPE table of rowtype WITH HEADER LINE.
(4)
DATA itab LIKE itab OCCURS 0 WITH HEADER LINE.
DATA itab type tabtype WITH HEADER LINE.
针对于内表与结构,类型也有表类型和行类型之分。
types: begin of ty_itab ,
a type c,
end of ty_itab.
types:ty_itab1 type table of ty_itab.
types:ty_itab2 typeline of ty_itab1.
types: begin of ty_itab .
include structure mara.
include type ty_itab.
types: data a type c,
end of itab.
types:aa type ty_itab.
types:bb type ty_itab occurs 0.
types: cc like itab occurs 0.
types: cc like itab .
refresh itab "清除内表数据
clear itab "清除没有headerline的内表数据,或者有headerline的内表工作区数据。
free itab " 清除内表内容,并收回内存
(1) delete itab where name = 'northsnow'.
(2) delete itab index i. (利用 sy-tabix)
(3)
loop at itab.
delete itab. 相当于delete itab index i. ,只不过是省略了 index i
endloop.
或者
loop at itab.
delete itab index sy-tabix.
endloop.
(4)
delete itab from n1 to n2 (利用 sy-tabix)
(5) delete itab from wa 根据关键字删除
(6)<!--StartFragment --> DELETEADJACENTDUPLICATESFROMitab
COMPARINGfieldlist. 删除重复的数据
where 条件和 from to 条件可以同时使用,处理两个条件的交集
(1) data a type i.
a = lines( itab ).
(2) data a type i.
describe table itab lines a.