ABAP Select data from SAP table AFPKB into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM AFPKB
*  INTO TABLE @DATA(IT_AFPKB2).
*--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_AFPKB INDEX 1 INTO DATA(WA_AFPKB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<AFPKB>-ALINE = 1.
<AFPKB>-BLINE = 1.
<AFPKB>-CLINE = 1.
<AFPKB>-MNG01 = 1.
<AFPKB>-XCODE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_AFPKB-PKBRC, sy-vline,
  WA_AFPKB-LISTX, sy-vline,
  WA_AFPKB-RCODE, sy-vline,
  WA_AFPKB-FNAME, sy-vline,
  WA_AFPKB-WBMNG, sy-vline,
  WA_AFPKB-FLP01, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_AFPKB 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_AFPKB 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_AFPKB INTO WA_AFPKB.


*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.
ENDFORM. 

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

TYPES: BEGIN OF T_AFPKB_STR, 
ALINE TYPE STRING,
BLINE TYPE STRING,
CLINE TYPE STRING,
MNG01 TYPE STRING,
XCODE TYPE STRING,
PKBRC TYPE STRING,
LISTX TYPE STRING,
RCODE TYPE STRING,
FNAME TYPE STRING,
WBMNG TYPE STRING,
FLP01 TYPE STRING,
PLIFZ TYPE STRING,
FKDIF TYPE STRING,
BSTYP TYPE STRING,
PSTYP TYPE STRING,
LGORT TYPE STRING,
FLG01 TYPE STRING,
FLG02 TYPE STRING,
REF01 TYPE STRING,
PKTIM TYPE STRING,
CHARG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_AFPKB_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_AFPKB_STR-ALINE sy-vline 
WA_AFPKB_STR-BLINE sy-vline 
WA_AFPKB_STR-CLINE sy-vline 
WA_AFPKB_STR-MNG01 sy-vline 
WA_AFPKB_STR-XCODE sy-vline 
WA_AFPKB_STR-PKBRC sy-vline 
WA_AFPKB_STR-LISTX sy-vline 
WA_AFPKB_STR-RCODE sy-vline 
WA_AFPKB_STR-FNAME sy-vline 
WA_AFPKB_STR-WBMNG sy-vline 
WA_AFPKB_STR-FLP01 sy-vline 
WA_AFPKB_STR-PLIFZ sy-vline 
WA_AFPKB_STR-FKDIF sy-vline 
WA_AFPKB_STR-BSTYP sy-vline 
WA_AFPKB_STR-PSTYP sy-vline 
WA_AFPKB_STR-LGORT sy-vline 
WA_AFPKB_STR-FLG01 sy-vline 
WA_AFPKB_STR-FLG02 sy-vline 
WA_AFPKB_STR-REF01 sy-vline 
WA_AFPKB_STR-PKTIM sy-vline 
WA_AFPKB_STR-CHARG sy-vline      INTO ld_text SEPARATED BY SPACE.

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