ABAP Select data from SAP table E3AFPOL into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP E3AFPOL 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 E3AFPOL. 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 E3AFPOL 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_E3AFPOL TYPE STANDARD TABLE OF E3AFPOL,
      WA_E3AFPOL TYPE E3AFPOL,
      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: <E3AFPOL> TYPE E3AFPOL.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E3AFPOL.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E3AFPOL
  INTO TABLE IT_E3AFPOL.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E3AFPOL
*  INTO TABLE @DATA(IT_E3AFPOL2).
*--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_E3AFPOL INDEX 1 INTO DATA(WA_E3AFPOL2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E3AFPOL ASSIGNING <E3AFPOL>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E3AFPOL>-POSNR = 1.
<E3AFPOL>-AMEIN = 1.
<E3AFPOL>-BMENG = 1.
<E3AFPOL>-DFREI = 1.
<E3AFPOL>-KDAUF = 1.

ENDLOOP.

LOOP AT IT_E3AFPOL INTO WA_E3AFPOL.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E3AFPOL-KDEIN, sy-vline,
  WA_E3AFPOL-KDPOS, sy-vline,
  WA_E3AFPOL-LGORT, sy-vline,
  WA_E3AFPOL-MATNR, sy-vline,
  WA_E3AFPOL-MEINS, sy-vline,
  WA_E3AFPOL-PLNUM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E3AFPOL 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_E3AFPOL 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_E3AFPOL INTO WA_E3AFPOL.


*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 CUNIT, internal->external for field AMEIN
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_E3AFPOL-AMEIN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E3AFPOL-AMEIN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KDAUF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E3AFPOL-KDAUF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E3AFPOL-KDAUF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN5, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN5_OUTPUT'
  EXPORTING
    input =                      WA_E3AFPOL-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E3AFPOL-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_E3AFPOL-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E3AFPOL-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PLNUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E3AFPOL-PLNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E3AFPOL-PLNUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SAFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E3AFPOL-SAFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E3AFPOL-SAFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATNL, internal->external for field MATNR_EXTERNAL
CALL FUNCTION 'CONVERSION_EXIT_MATNL_OUTPUT'
  EXPORTING
    input =                      WA_E3AFPOL-MATNR_EXTERNAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E3AFPOL-MATNR_EXTERNAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATNW, internal->external for field MATNR_VERSION
CALL FUNCTION 'CONVERSION_EXIT_MATNW_OUTPUT'
  EXPORTING
    input =                      WA_E3AFPOL-MATNR_VERSION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E3AFPOL-MATNR_VERSION.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR_LONG
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_E3AFPOL-MATNR_LONG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E3AFPOL-MATNR_LONG.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNAG
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E3AFPOL-KUNAG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E3AFPOL-KUNAG.
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_E3AFPOL_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_E3AFPOL_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_E3AFPOL_STR-POSNR sy-vline 
WA_E3AFPOL_STR-AMEIN sy-vline 
WA_E3AFPOL_STR-BMENG sy-vline 
WA_E3AFPOL_STR-DFREI sy-vline 
WA_E3AFPOL_STR-KDAUF sy-vline 
WA_E3AFPOL_STR-KDEIN sy-vline 
WA_E3AFPOL_STR-KDPOS sy-vline 
WA_E3AFPOL_STR-LGORT sy-vline 
WA_E3AFPOL_STR-MATNR sy-vline 
WA_E3AFPOL_STR-MEINS sy-vline 
WA_E3AFPOL_STR-PLNUM sy-vline 
WA_E3AFPOL_STR-PSAMG sy-vline 
WA_E3AFPOL_STR-PSMNG sy-vline 
WA_E3AFPOL_STR-SAFNR sy-vline 
WA_E3AFPOL_STR-SERNR sy-vline 
WA_E3AFPOL_STR-UMREN sy-vline 
WA_E3AFPOL_STR-UMREZ sy-vline 
WA_E3AFPOL_STR-VERID sy-vline 
WA_E3AFPOL_STR-WEBAZ sy-vline 
WA_E3AFPOL_STR-WEMNG sy-vline 
WA_E3AFPOL_STR-MATNR_EXTERNAL sy-vline 
WA_E3AFPOL_STR-MATNR_VERSION sy-vline 
WA_E3AFPOL_STR-MATNR_GUID sy-vline 
WA_E3AFPOL_STR-CHARG sy-vline 
WA_E3AFPOL_STR-PWERK sy-vline 
WA_E3AFPOL_STR-MATNR_LONG sy-vline 
WA_E3AFPOL_STR-LGNUM sy-vline 
WA_E3AFPOL_STR-KUNAG sy-vline 
WA_E3AFPOL_STR-NAME1 sy-vline 
WA_E3AFPOL_STR-UNTTO sy-vline 
WA_E3AFPOL_STR-UEBTO sy-vline 
WA_E3AFPOL_STR-UEBTK sy-vline 
WA_E3AFPOL_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.