ABAP Select data from SAP table DF50D into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP DF50D 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 DF50D. 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 DF50D 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_DF50D TYPE STANDARD TABLE OF DF50D,
      WA_DF50D TYPE DF50D,
      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: <DF50D> TYPE DF50D.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_DF50D.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM DF50D
  INTO TABLE IT_DF50D.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DF50D
*  INTO TABLE @DATA(IT_DF50D2).
*--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_DF50D INDEX 1 INTO DATA(WA_DF50D2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_DF50D ASSIGNING <DF50D>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DF50D>-FILTER_ID = 1.
<DF50D>-SEL_ID = 1.
<DF50D>-AS4LOCAL = 1.
<DF50D>-FSTUSER = 1.
<DF50D>-FSTTSTAMP = 1.

ENDLOOP.

LOOP AT IT_DF50D INTO WA_DF50D.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DF50D-FSTREL, sy-vline,
  WA_DF50D-LSTUSER, sy-vline,
  WA_DF50D-LSTTSTAMP, sy-vline,
  WA_DF50D-LSTREL, sy-vline,
  WA_DF50D-SYNCH, sy-vline,
  WA_DF50D-IDENT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DF50D 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_DF50D 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_DF50D INTO WA_DF50D.


*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 RELE, internal->external for field FSTREL
CALL FUNCTION 'CONVERSION_EXIT_RELE_OUTPUT'
  EXPORTING
    input =                      WA_DF50D-FSTREL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DF50D-FSTREL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit RELE, internal->external for field LSTREL
CALL FUNCTION 'CONVERSION_EXIT_RELE_OUTPUT'
  EXPORTING
    input =                      WA_DF50D-LSTREL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DF50D-LSTREL.
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_DF50D_STR, 
FILTER_ID TYPE STRING,
SEL_ID TYPE STRING,
AS4LOCAL TYPE STRING,
FSTUSER TYPE STRING,
FSTTSTAMP TYPE STRING,
FSTREL TYPE STRING,
LSTUSER TYPE STRING,
LSTTSTAMP TYPE STRING,
LSTREL TYPE STRING,
SYNCH TYPE STRING,
IDENT TYPE STRING,
STRUCT_ID TYPE STRING,
NODE_ID TYPE STRING,
STATUS TYPE STRING,
COMP_DIA TYPE STRING,
VAR_OBJ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DF50D_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_DF50D_STR-FILTER_ID sy-vline 
WA_DF50D_STR-SEL_ID sy-vline 
WA_DF50D_STR-AS4LOCAL sy-vline 
WA_DF50D_STR-FSTUSER sy-vline 
WA_DF50D_STR-FSTTSTAMP sy-vline 
WA_DF50D_STR-FSTREL sy-vline 
WA_DF50D_STR-LSTUSER sy-vline 
WA_DF50D_STR-LSTTSTAMP sy-vline 
WA_DF50D_STR-LSTREL sy-vline 
WA_DF50D_STR-SYNCH sy-vline 
WA_DF50D_STR-IDENT sy-vline 
WA_DF50D_STR-STRUCT_ID sy-vline 
WA_DF50D_STR-NODE_ID sy-vline 
WA_DF50D_STR-STATUS sy-vline 
WA_DF50D_STR-COMP_DIA sy-vline 
WA_DF50D_STR-VAR_OBJ sy-vline      INTO ld_text SEPARATED BY SPACE.

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