ABAP Select data from SAP table AFWKFRA_PARA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM AFWKFRA_PARA
*  INTO TABLE @DATA(IT_AFWKFRA_PARA2).
*--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_AFWKFRA_PARA INDEX 1 INTO DATA(WA_AFWKFRA_PARA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<AFWKFRA_PARA>-EVALDATE = 1.
<AFWKFRA_PARA>-EVALT = 1.
<AFWKFRA_PARA>-CURRENCY = 1.
<AFWKFRA_PARA>-TMEGRID = 1.
<AFWKFRA_PARA>-RULECAT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_AFWKFRA_PARA-RHID, sy-vline,
  WA_AFWKFRA_PARA-XROOT, sy-vline,
  WA_AFWKFRA_PARA-AUSWTYP, sy-vline,
  WA_AFWKFRA_PARA-VARTYP, sy-vline,
  WA_AFWKFRA_PARA-MITTEL, sy-vline,
  WA_AFWKFRA_PARA-SIMTYP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_AFWKFRA_PARA 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_AFWKFRA_PARA 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_AFWKFRA_PARA INTO WA_AFWKFRA_PARA.


*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 ALPHA, internal->external for field TMEGRID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_AFWKFRA_PARA-TMEGRID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AFWKFRA_PARA-TMEGRID.
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_AFWKFRA_PARA_STR, 
EVALDATE TYPE STRING,
EVALT TYPE STRING,
CURRENCY TYPE STRING,
TMEGRID TYPE STRING,
RULECAT TYPE STRING,
RHID TYPE STRING,
XROOT TYPE STRING,
AUSWTYP TYPE STRING,
VARTYP TYPE STRING,
MITTEL TYPE STRING,
SIMTYP TYPE STRING,
SIMNR TYPE STRING,
UNWIND TYPE STRING,
HDATUM TYPE STRING,
MISSLIMIT TYPE STRING,
SAMPTYP TYPE STRING,
KALENDER TYPE STRING,
SEED TYPE STRING,
DESTINATION TYPE STRING,
FUNCTION TYPE STRING,
VOLART TYPE STRING,
KORART TYPE STRING,
TIMESTEPSIZE TYPE STRING,
TIMEGRID_METHOD TYPE STRING,
POS_AGGR_CF_DATE TYPE STRING,
RISKFACT_SET TYPE STRING,END OF T_EKKO_STR.
DATA: WA_AFWKFRA_PARA_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_AFWKFRA_PARA_STR-EVALDATE sy-vline 
WA_AFWKFRA_PARA_STR-EVALT sy-vline 
WA_AFWKFRA_PARA_STR-CURRENCY sy-vline 
WA_AFWKFRA_PARA_STR-TMEGRID sy-vline 
WA_AFWKFRA_PARA_STR-RULECAT sy-vline 
WA_AFWKFRA_PARA_STR-RHID sy-vline 
WA_AFWKFRA_PARA_STR-XROOT sy-vline 
WA_AFWKFRA_PARA_STR-AUSWTYP sy-vline 
WA_AFWKFRA_PARA_STR-VARTYP sy-vline 
WA_AFWKFRA_PARA_STR-MITTEL sy-vline 
WA_AFWKFRA_PARA_STR-SIMTYP sy-vline 
WA_AFWKFRA_PARA_STR-SIMNR sy-vline 
WA_AFWKFRA_PARA_STR-UNWIND sy-vline 
WA_AFWKFRA_PARA_STR-HDATUM sy-vline 
WA_AFWKFRA_PARA_STR-MISSLIMIT sy-vline 
WA_AFWKFRA_PARA_STR-SAMPTYP sy-vline 
WA_AFWKFRA_PARA_STR-KALENDER sy-vline 
WA_AFWKFRA_PARA_STR-SEED sy-vline 
WA_AFWKFRA_PARA_STR-DESTINATION sy-vline 
WA_AFWKFRA_PARA_STR-FUNCTION sy-vline 
WA_AFWKFRA_PARA_STR-VOLART sy-vline 
WA_AFWKFRA_PARA_STR-KORART sy-vline 
WA_AFWKFRA_PARA_STR-TIMESTEPSIZE sy-vline 
WA_AFWKFRA_PARA_STR-TIMEGRID_METHOD sy-vline 
WA_AFWKFRA_PARA_STR-POS_AGGR_CF_DATE sy-vline 
WA_AFWKFRA_PARA_STR-RISKFACT_SET sy-vline      INTO ld_text SEPARATED BY SPACE.

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