ABAP Select data from SAP table ASREFIELD into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ASREFIELD 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 ASREFIELD. 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 ASREFIELD 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_ASREFIELD TYPE STANDARD TABLE OF ASREFIELD,
      WA_ASREFIELD TYPE ASREFIELD,
      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: <ASREFIELD> TYPE ASREFIELD.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ASREFIELD
*  INTO TABLE @DATA(IT_ASREFIELD2).
*--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_ASREFIELD INDEX 1 INTO DATA(WA_ASREFIELD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ASREFIELD>-LOCSYS = 1.
<ASREFIELD>-LOCSYSNSIC = 1.
<ASREFIELD>-PAYSC = 1.
<ASREFIELD>-FDUDT = 1.
<ASREFIELD>-BUDEX = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ASREFIELD-ONACCKZ, sy-vline,
  WA_ASREFIELD-ATEXT1, sy-vline,
  WA_ASREFIELD-REFAO, sy-vline,
  WA_ASREFIELD-PERSCH, sy-vline,
  WA_ASREFIELD-LOCMANAG, sy-vline,
  WA_ASREFIELD-GROUPNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ASREFIELD 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_ASREFIELD 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_ASREFIELD INTO WA_ASREFIELD.


*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_ASREFIELD_STR, 
LOCSYS TYPE STRING,
LOCSYSNSIC TYPE STRING,
PAYSC TYPE STRING,
FDUDT TYPE STRING,
BUDEX TYPE STRING,
ONACCKZ TYPE STRING,
ATEXT1 TYPE STRING,
REFAO TYPE STRING,
PERSCH TYPE STRING,
LOCMANAG TYPE STRING,
GROUPNR TYPE STRING,
VERSION TYPE STRING,
CONTKZ TYPE STRING,
CONTDAT TYPE STRING,
CONTREG TYPE STRING,
PERSARC TYPE STRING,
INVCNR TYPE STRING,
INVCDT TYPE STRING,
INVCLC TYPE STRING,
PURONR TYPE STRING,
PURODT TYPE STRING,
PUROLC TYPE STRING,
CONTNR TYPE STRING,
CONTDT TYPE STRING,
CONTLC TYPE STRING,
DEMNR TYPE STRING,
DEMDT TYPE STRING,
DEMLC TYPE STRING,
FREPNR TYPE STRING,
FREPDT TYPE STRING,
FREPLC TYPE STRING,
REGLNR TYPE STRING,
REGLDT TYPE STRING,
REGLLC TYPE STRING,
AVISNR TYPE STRING,
AVISDT TYPE STRING,
AVISLC TYPE STRING,
OTHERNR TYPE STRING,
OTHERDT TYPE STRING,
OTHERLC TYPE STRING,
OTHERNR2 TYPE STRING,
OTHERDT2 TYPE STRING,
OTHERLC2 TYPE STRING,
CHANGINVOI TYPE STRING,
XBRIEF TYPE STRING,
XPAPER TYPE STRING,
GEST_GRP TYPE STRING,
HBKID TYPE STRING,
HKTID TYPE STRING,
REASON TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ASREFIELD_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_ASREFIELD_STR-LOCSYS sy-vline 
WA_ASREFIELD_STR-LOCSYSNSIC sy-vline 
WA_ASREFIELD_STR-PAYSC sy-vline 
WA_ASREFIELD_STR-FDUDT sy-vline 
WA_ASREFIELD_STR-BUDEX sy-vline 
WA_ASREFIELD_STR-ONACCKZ sy-vline 
WA_ASREFIELD_STR-ATEXT1 sy-vline 
WA_ASREFIELD_STR-REFAO sy-vline 
WA_ASREFIELD_STR-PERSCH sy-vline 
WA_ASREFIELD_STR-LOCMANAG sy-vline 
WA_ASREFIELD_STR-GROUPNR sy-vline 
WA_ASREFIELD_STR-VERSION sy-vline 
WA_ASREFIELD_STR-CONTKZ sy-vline 
WA_ASREFIELD_STR-CONTDAT sy-vline 
WA_ASREFIELD_STR-CONTREG sy-vline 
WA_ASREFIELD_STR-PERSARC sy-vline 
WA_ASREFIELD_STR-INVCNR sy-vline 
WA_ASREFIELD_STR-INVCDT sy-vline 
WA_ASREFIELD_STR-INVCLC sy-vline 
WA_ASREFIELD_STR-PURONR sy-vline 
WA_ASREFIELD_STR-PURODT sy-vline 
WA_ASREFIELD_STR-PUROLC sy-vline 
WA_ASREFIELD_STR-CONTNR sy-vline 
WA_ASREFIELD_STR-CONTDT sy-vline 
WA_ASREFIELD_STR-CONTLC sy-vline 
WA_ASREFIELD_STR-DEMNR sy-vline 
WA_ASREFIELD_STR-DEMDT sy-vline 
WA_ASREFIELD_STR-DEMLC sy-vline 
WA_ASREFIELD_STR-FREPNR sy-vline 
WA_ASREFIELD_STR-FREPDT sy-vline 
WA_ASREFIELD_STR-FREPLC sy-vline 
WA_ASREFIELD_STR-REGLNR sy-vline 
WA_ASREFIELD_STR-REGLDT sy-vline 
WA_ASREFIELD_STR-REGLLC sy-vline 
WA_ASREFIELD_STR-AVISNR sy-vline 
WA_ASREFIELD_STR-AVISDT sy-vline 
WA_ASREFIELD_STR-AVISLC sy-vline 
WA_ASREFIELD_STR-OTHERNR sy-vline 
WA_ASREFIELD_STR-OTHERDT sy-vline 
WA_ASREFIELD_STR-OTHERLC sy-vline 
WA_ASREFIELD_STR-OTHERNR2 sy-vline 
WA_ASREFIELD_STR-OTHERDT2 sy-vline 
WA_ASREFIELD_STR-OTHERLC2 sy-vline 
WA_ASREFIELD_STR-CHANGINVOI sy-vline 
WA_ASREFIELD_STR-XBRIEF sy-vline 
WA_ASREFIELD_STR-XPAPER sy-vline 
WA_ASREFIELD_STR-GEST_GRP sy-vline 
WA_ASREFIELD_STR-HBKID sy-vline 
WA_ASREFIELD_STR-HKTID sy-vline 
WA_ASREFIELD_STR-REASON sy-vline      INTO ld_text SEPARATED BY SPACE.

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