abap-关于内表/字符串/关键词

1、关于内表的一些操作

TYPES: BEGIN OF t_marc,
       matnr type marc-MATNR,
       BSTRF type marc-BSTRF,
       END OF t_marc.
DATA:LT_MARC TYPE TABLE OF t_marc,
     LT_MARC02 TYPE TABLE OF t_marc,
     ls_marc type t_marc.

查询数据作为操作内表

select  matnr BSTRF
into table lt_marc
from marc
UP TO 500 ROWS.

对内表进行排序

SORT LT_MARC BY MATNR DESCENDING.

对内表根据物料号去重

 delete ADJACENT DUPLICATES FROM LT_marc COMPARING matnr.

获取内表的行数

 data:line type i .
 line = lines( lt_marc ).

读取内表的数据到工作区内

 READ TABLE LT_MARC INTO LS_MARC WITH KEY MATNR = ''."根据条件获取对应数据

 READ TABLE LT_MARC INTO LS_MARC INDEX 1."根据索引获取对应的数据

查询内表内是否包含某个数据而不存到内表内

 READ TABLE LT_MARC TRANSPORTING NO FIELDS WITH KEY MATNR = ''.

声明结构和内表

TYPES: BEGIN OF t_marc02,
        matnr type marc-matnr,
       BSTRF type marc-BSTRF,
       END OF t_marc02.
 data:lt_collect type TABLE OF t_marc02,
      ls_collect type t_marc02.

把表1的几列放到表2中去

lt_collect = CORRESPONDING #( lt_marc ).

把表内相同物料号的BSTRF 数值相加

 loop at lt_marc into data(ls_marc03).
   ls_collect = CORRESPONDING #( ls_marc03 ).
   COLLECT ls_collect into lt_collect.
 endloop.

把内表的数据赋值给一个新的内表

 data(lt_newmarc) = lt_marc[].

把内表A的值添加到内表B中，不影响原本内表B的数据

APPEND LINES OF lt_marc TO LT_MARC02.

删除内表的数据

 delete  lt_marc INDEX 1."根据索引删除内表的第一行数据
 delete lt_marc where MATNR = ''."删除对应的物料号数据 
 delete lt_marc from 1 to 2  where MATNR = ''."删除符合条件的前两条数据
 delete lt_marc from lt_marc02."根据内表删除

内表的MODIFY操作，修改内表的值

 READ TABLE lt_marc INTO LS_MARC INDEX 1.
 LS_MARC-BSTRF = '536.36'.
 MODIFY LT_MARC FROM LS_MARC."根据工作区进行修改
 MODIFY LT_MARC FROM LS_MARC TRANSPORTING BSTRF WHERE MATNR = ''."根据内表修改对应的字段

使用二分法查询时，需要事先进行排序

 SORT lt_marc by matnr DESCENDING.
 READ TABLE lt_marc into LS_MARC with key MATNR = '' BINARY SEARCH.

2、字符串的一些处理

 DATA:s1(10) type c VALUE 'HELLO',
      s2(10) type c VALUE 'WORLD',
      s3(50) type c,
      s4(5)  type c VALUE 'L',
      s5(10) type c,
      s6(10) type c,
      long TYPE i.

 s3 = s1 && s2. "通过&&进行拼接
 
 CONCATENATE s1 s2 into s3."通过 CONCATENATE 进行拼接

 CONCATENATE s1 s2 into s3 SEPARATED BY '||'."通过 CONCATENATE进行拼接，并设置对应的分隔符
 
 SEARCH s1 for 'H'.""查询字符串中是否含H
 
 CONDENSE s1 NO-GAPS."去除空格。
 
 SPLIT s1 at s4 into s5 s6."分割字符串
 
 long = strlen( s1 ). "获取字符串长度
 
TRANSLATE s1 TO UPPER CASE.         "转换成大写
 
TRANSLATE s2 TO LOWER CASE.         "转换成小写

CONV:类型强制转换
CONV 类型( 数据 )
eg:DATA(L_MK_GD) = CONV QSOLLWERTC( 0 ).