ABAP Select data from SAP table AFFT into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP AFFT table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to AFFT. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the AFFT table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_AFFT TYPE STANDARD TABLE OF AFFT,
      WA_AFFT TYPE AFFT,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <AFFT> TYPE AFFT.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_AFFT.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM AFFT
  INTO TABLE IT_AFFT.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM AFFT
*  INTO TABLE @DATA(IT_AFFT2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_AFFT INDEX 1 INTO DATA(WA_AFFT2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_AFFT ASSIGNING <AFFT>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<AFFT>-MANDT = 1.
<AFFT>-AUFPL = 1.
<AFFT>-APLZL = 1.
<AFFT>-APHZL = 1.
<AFFT>-AFTZL = 1.

ENDLOOP.

LOOP AT IT_AFFT INTO WA_AFFT.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_AFFT-PLNTY, sy-vline,
  WA_AFFT-PLNNR, sy-vline,
  WA_AFFT-PLNKN, sy-vline,
  WA_AFFT-PLNPH, sy-vline,
  WA_AFFT-PLNFT, sy-vline,
  WA_AFFT-ZAEHL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_AFFT you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_AFFT TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_AFFT INTO WA_AFFT.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.

*Conversion exit ALPHA, internal->external for field PLNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_AFFT-PLNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AFFT-PLNNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field FTRNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_AFFT-FTRNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AFFT-FTRNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field FTRNI
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_AFFT-FTRNI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AFFT-FTRNI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AENNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_AFFT-AENNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AFFT-AENNR.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_AFFT_STR, 
MANDT TYPE STRING,
AUFPL TYPE STRING,
APLZL TYPE STRING,
APHZL TYPE STRING,
AFTZL TYPE STRING,
PLNTY TYPE STRING,
PLNNR TYPE STRING,
PLNKN TYPE STRING,
PLNPH TYPE STRING,
PLNFT TYPE STRING,
ZAEHL TYPE STRING,
FTRNR TYPE STRING,
CSTYP TYPE STRING,
COSTR TYPE STRING,
CSKTX TYPE STRING,
FTTYP TYPE STRING,
FTRNI TYPE STRING,
AENNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_AFFT_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_AFFT_STR-MANDT sy-vline 
WA_AFFT_STR-AUFPL sy-vline 
WA_AFFT_STR-APLZL sy-vline 
WA_AFFT_STR-APHZL sy-vline 
WA_AFFT_STR-AFTZL sy-vline 
WA_AFFT_STR-PLNTY sy-vline 
WA_AFFT_STR-PLNNR sy-vline 
WA_AFFT_STR-PLNKN sy-vline 
WA_AFFT_STR-PLNPH sy-vline 
WA_AFFT_STR-PLNFT sy-vline 
WA_AFFT_STR-ZAEHL sy-vline 
WA_AFFT_STR-FTRNR sy-vline 
WA_AFFT_STR-CSTYP sy-vline 
WA_AFFT_STR-COSTR sy-vline 
WA_AFFT_STR-CSKTX sy-vline 
WA_AFFT_STR-FTTYP sy-vline 
WA_AFFT_STR-FTRNI sy-vline 
WA_AFFT_STR-AENNR sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.