ABAP Select data from SAP table DFPAYG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DFPAYG
*  INTO TABLE @DATA(IT_DFPAYG2).
*--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_DFPAYG INDEX 1 INTO DATA(WA_DFPAYG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DFPAYG>-MANDT = 1.
<DFPAYG>-LAUFD = 1.
<DFPAYG>-LAUFI = 1.
<DFPAYG>-XVORL = 1.
<DFPAYG>-GRPNO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DFPAYG-FORMI, sy-vline,
  WA_DFPAYG-ZBUKR, sy-vline,
  WA_DFPAYG-BANKS, sy-vline,
  WA_DFPAYG-BANKL, sy-vline,
  WA_DFPAYG-HBKID, sy-vline,
  WA_DFPAYG-HKTID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DFPAYG 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_DFPAYG 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_DFPAYG INTO WA_DFPAYG.


*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_DFPAYG_STR, 
MANDT TYPE STRING,
LAUFD TYPE STRING,
LAUFI TYPE STRING,
XVORL TYPE STRING,
GRPNO TYPE STRING,
FORMI TYPE STRING,
ZBUKR TYPE STRING,
BANKS TYPE STRING,
BANKL TYPE STRING,
HBKID TYPE STRING,
HKTID TYPE STRING,
CRDEB TYPE STRING,
RZAWE TYPE STRING,
ANZ_ERZ TYPE STRING,
ANZ_ERL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DFPAYG_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_DFPAYG_STR-MANDT sy-vline 
WA_DFPAYG_STR-LAUFD sy-vline 
WA_DFPAYG_STR-LAUFI sy-vline 
WA_DFPAYG_STR-XVORL sy-vline 
WA_DFPAYG_STR-GRPNO sy-vline 
WA_DFPAYG_STR-FORMI sy-vline 
WA_DFPAYG_STR-ZBUKR sy-vline 
WA_DFPAYG_STR-BANKS sy-vline 
WA_DFPAYG_STR-BANKL sy-vline 
WA_DFPAYG_STR-HBKID sy-vline 
WA_DFPAYG_STR-HKTID sy-vline 
WA_DFPAYG_STR-CRDEB sy-vline 
WA_DFPAYG_STR-RZAWE sy-vline 
WA_DFPAYG_STR-ANZ_ERZ sy-vline 
WA_DFPAYG_STR-ANZ_ERL sy-vline      INTO ld_text SEPARATED BY SPACE.

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