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Table Comprehensions, Multiple Rows

This example demonstrates how multiple rows in a FOR expression of a table comprehension are created.

Other versions: 7.31 | 7.40 | 7.54

Source Code

    TYPES:
      BEGIN OF line1,
        col1 TYPE i,
        col2 TYPE i,
        col3 TYPE i,
      END OF line1,
      itab1 TYPE TABLE OF line1 WITH EMPTY KEY,
      itab2 TYPE TABLE OF i     WITH EMPTY KEY.

    DATA(out) = cl_demo_output=>new( ).

    DATA(itab1) = VALUE itab1(
      ( col1 = 11 col2 = 12 col3 = 13 )
      ( col1 = 21 col2 = 22 col3 = 23 )
      ( col1 = 31 col2 = 32 col3 = 33 ) ).
    out->write( itab1 ).

    DATA(itab2) = VALUE itab2(
      FOR wa IN itab1
        ( wa-col1 )
        ( wa-col2 )
        ( wa-col3 ) ).
    out->write( itab2 ).

    out->display( ).

Description

The columns of itabl are created as individual rows after its FOR expression. The result is a single-column internal table, itab2, that contains the content of itab1 as an array