abap - 从一组记录中选择最大字段值？

Question

我需要从 每个不同的 VKONT 的 itab 中获取具有最高 EXBEL 寄存器 的行。

如果源表中有几行具有相同的最高 EXBEL 值，则结果表可能包含同一 VKONT 值的几行。

实际源表:

SPARTE  VKONT         EXBEL
05      800000008422  1NSN150900000058
L2      800000008422  1NSN150900000058
05      800000008422  1NSN150900000037
L2      800000008422  1NSN150900000037
05      800000008422  1NSN150900000013
L2      800000008422  1NSN150900000013
05      800000008415  1HSN151200000009
S1      800000008415  1HSN151200000009
05      800000008415  1HSN151200000008
S1      800000008415  1HSN151200000008
L1      800000008422  1NSN150900000050
L1      800000008422  1NSN150900000029
L1      800000008422  1NSN150900000023
05      800000008415  1HSN151200000012
S1      800000008415  1HSN151200000012
05      800000008422  1NSN150900000058
L2      800000008422  1NSN150900000058
05      800000008415  1HSN151200000009
S1      800000008415  1HSN151200000009

预期结果表:

SPARTE  VKONT         EXBEL
05      800000008422  1NSN150900000058
L2      800000008422  1NSN150900000058
05      800000008415  1HSN151200000012
S1      800000008415  1HSN151200000012

我尝试了不同的解决方案，但没有奏效。

我们将不胜感激。

劳尔。

Answer 1

从7.52开始，可以select在内部表上。示例代码如下。

TYPES:
BEGIN OF ty_s_value,
   sparte TYPE char2,
   vkont  TYPE char12,
   exbel  TYPE char16,
END OF ty_s_value.

TYPES:
ty_t_value TYPE STANDARD TABLE OF ty_s_value .

DATA:
  lt_value TYPE ty_t_value.

lt_value = VALUE #(
                    ( sparte = '05' vkont = '800008422' exbel = '0000000000000001')
                    ( sparte = 'l2' vkont = '800008422' exbel = '0000000000000002')
                    ( sparte = 'l2' vkont = '800008422' exbel = '0000000000000004')
                    ( sparte = '05' vkont = '800008423' exbel = '0000000000000003')
                    ( sparte = 'l2' vkont = '800008423' exbel = '0000000000000002')
                    ( sparte = 'l2' vkont = '800008423' exbel = '0000000000000005')
                 ).

SELECT FROM @lt_value AS a FIELDS a~sparte, a~vkont, MAX( a~exbel ) AS exbel 
   GROUP BY a~sparte, a~vkont
   ORDER BY a~sparte, a~vkont INTO TABLE @DATA(result).