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REPORT ZNEWABAP1. TYPES:      BEGIN OF line1,        col1 TYPE i,        col2 TYPE i,        col3 TYPE i,        col4 TYPE i,      END OF line1,      itab1 TYPE TABLE OF line1 WITH EMPTY KEY                                WITH UNIQUE SORTED KEY                                     key COMPONENTS col1,      BEGIN OF line2,        col1 TYPE i,        col2 TYPE i,      END OF line2,      itab2 TYPE TABLE OF line1 WITH EMPTY KEY,      itab3 TYPE TABLE OF line2 WITH EMPTY KEY,      itab4 TYPE TABLE OF i     WITH EMPTY KEY.    DATA(out) = cl_demo_output=>new( ).    DATA(itab1) = VALUE itab1(      ( col1 = 41 col2 = 42 col3 = 43 col4 = 44 )      ( col1 = 31 col2 = 32 col3 = 33 col4 = 34 )      ( col1 = 21 col2 = 22 col3 = 23 col4 = 24 )      ( col1 = 11 col2 = 12 col3 = 13 col4 = 14 ) ).    "out->write( itab1 ).    DATA(itab2) = VALUE itab2(      FOR wa IN itab1 WHERE ( col1 < 30 )        ( col1 = wa-col1          col3 = wa-col3 + wa-col1          ) ).    BREAK-POINT.    ```要获取更多Jerry的原创文章，请关注公众号"汪子熙":![](https://imgconvert.csdnimg.cn/aHR0cHM6Ly91cGxvYWQtaW1hZ2VzLmppYW5zaHUuaW8vdXBsb2FkX2ltYWdlcy8yMDg1NzkxLWZjN2VjZDk3ZGViNjcwOTAucG5n?x-oss-process=image/format,png)

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