ABAP Select data from SAP table E1AFPOL into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP E1AFPOL 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 E1AFPOL. 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 E1AFPOL 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_E1AFPOL TYPE STANDARD TABLE OF E1AFPOL,
      WA_E1AFPOL TYPE E1AFPOL,
      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: <E1AFPOL> TYPE E1AFPOL.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E1AFPOL.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E1AFPOL
  INTO TABLE IT_E1AFPOL.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E1AFPOL
*  INTO TABLE @DATA(IT_E1AFPOL2).
*--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_E1AFPOL INDEX 1 INTO DATA(WA_E1AFPOL2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E1AFPOL ASSIGNING <E1AFPOL>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E1AFPOL>-POSNR = 1.
<E1AFPOL>-AMEIN = 1.
<E1AFPOL>-BMENG = 1.
<E1AFPOL>-DFREI = 1.
<E1AFPOL>-KDAUF = 1.

ENDLOOP.

LOOP AT IT_E1AFPOL INTO WA_E1AFPOL.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E1AFPOL-KDEIN, sy-vline,
  WA_E1AFPOL-KDPOS, sy-vline,
  WA_E1AFPOL-LGORT, sy-vline,
  WA_E1AFPOL-MATNR, sy-vline,
  WA_E1AFPOL-MEINS, sy-vline,
  WA_E1AFPOL-PLNUM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E1AFPOL 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_E1AFPOL 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_E1AFPOL INTO WA_E1AFPOL.


*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 KDAUF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E1AFPOL-KDAUF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E1AFPOL-KDAUF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN5, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN5_OUTPUT'
  EXPORTING
    input =                      WA_E1AFPOL-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E1AFPOL-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PLNUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E1AFPOL-PLNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E1AFPOL-PLNUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SAFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E1AFPOL-SAFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E1AFPOL-SAFNR.
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_E1AFPOL_STR, 
POSNR TYPE STRING,
AMEIN TYPE STRING,
BMENG TYPE STRING,
DFREI TYPE STRING,
KDAUF TYPE STRING,
KDEIN TYPE STRING,
KDPOS TYPE STRING,
LGORT TYPE STRING,
MATNR TYPE STRING,
MEINS TYPE STRING,
PLNUM TYPE STRING,
PSAMG TYPE STRING,
PSMNG TYPE STRING,
SAFNR TYPE STRING,
SERNR TYPE STRING,
UMREN TYPE STRING,
UMREZ TYPE STRING,
VERID TYPE STRING,
WEBAZ TYPE STRING,
WEMNG TYPE STRING,
MATNR_EXTERNAL TYPE STRING,
MATNR_VERSION TYPE STRING,
MATNR_GUID TYPE STRING,
CHARG TYPE STRING,
PWERK TYPE STRING,
MATNR_LONG TYPE STRING,
LGNUM TYPE STRING,
KUNAG TYPE STRING,
NAME1 TYPE STRING,
UNTTO TYPE STRING,
UEBTO TYPE STRING,
UEBTK TYPE STRING,
TECHS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E1AFPOL_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_E1AFPOL_STR-POSNR sy-vline 
WA_E1AFPOL_STR-AMEIN sy-vline 
WA_E1AFPOL_STR-BMENG sy-vline 
WA_E1AFPOL_STR-DFREI sy-vline 
WA_E1AFPOL_STR-KDAUF sy-vline 
WA_E1AFPOL_STR-KDEIN sy-vline 
WA_E1AFPOL_STR-KDPOS sy-vline 
WA_E1AFPOL_STR-LGORT sy-vline 
WA_E1AFPOL_STR-MATNR sy-vline 
WA_E1AFPOL_STR-MEINS sy-vline 
WA_E1AFPOL_STR-PLNUM sy-vline 
WA_E1AFPOL_STR-PSAMG sy-vline 
WA_E1AFPOL_STR-PSMNG sy-vline 
WA_E1AFPOL_STR-SAFNR sy-vline 
WA_E1AFPOL_STR-SERNR sy-vline 
WA_E1AFPOL_STR-UMREN sy-vline 
WA_E1AFPOL_STR-UMREZ sy-vline 
WA_E1AFPOL_STR-VERID sy-vline 
WA_E1AFPOL_STR-WEBAZ sy-vline 
WA_E1AFPOL_STR-WEMNG sy-vline 
WA_E1AFPOL_STR-MATNR_EXTERNAL sy-vline 
WA_E1AFPOL_STR-MATNR_VERSION sy-vline 
WA_E1AFPOL_STR-MATNR_GUID sy-vline 
WA_E1AFPOL_STR-CHARG sy-vline 
WA_E1AFPOL_STR-PWERK sy-vline 
WA_E1AFPOL_STR-MATNR_LONG sy-vline 
WA_E1AFPOL_STR-LGNUM sy-vline 
WA_E1AFPOL_STR-KUNAG sy-vline 
WA_E1AFPOL_STR-NAME1 sy-vline 
WA_E1AFPOL_STR-UNTTO sy-vline 
WA_E1AFPOL_STR-UEBTO sy-vline 
WA_E1AFPOL_STR-UEBTK sy-vline 
WA_E1AFPOL_STR-TECHS sy-vline      INTO ld_text SEPARATED BY SPACE.

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