ABAP Select data from SAP table AFWKFRA_SIM into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP AFWKFRA_SIM 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_SIM. 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_SIM 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_SIM TYPE STANDARD TABLE OF AFWKFRA_SIM,
      WA_AFWKFRA_SIM TYPE AFWKFRA_SIM,
      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_SIM> TYPE AFWKFRA_SIM.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM AFWKFRA_SIM
*  INTO TABLE @DATA(IT_AFWKFRA_SIM2).
*--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_SIM INDEX 1 INTO DATA(WA_AFWKFRA_SIM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<AFWKFRA_SIM>-SIMTYP = 1.
<AFWKFRA_SIM>-SIMNR = 1.
<AFWKFRA_SIM>-UNWIND = 1.
<AFWKFRA_SIM>-HDATUM = 1.
<AFWKFRA_SIM>-MISSLIMIT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_AFWKFRA_SIM-SAMPTYP, sy-vline,
  WA_AFWKFRA_SIM-KALENDER, sy-vline,
  WA_AFWKFRA_SIM-SEED, sy-vline,
  WA_AFWKFRA_SIM-DESTINATION, sy-vline,
  WA_AFWKFRA_SIM-FUNCTION, sy-vline,
  WA_AFWKFRA_SIM-VOLART, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_AFWKFRA_SIM 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_SIM 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_SIM INTO WA_AFWKFRA_SIM.


*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_AFWKFRA_SIM_STR, 
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,END OF T_EKKO_STR.
DATA: WA_AFWKFRA_SIM_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_SIM_STR-SIMTYP sy-vline 
WA_AFWKFRA_SIM_STR-SIMNR sy-vline 
WA_AFWKFRA_SIM_STR-UNWIND sy-vline 
WA_AFWKFRA_SIM_STR-HDATUM sy-vline 
WA_AFWKFRA_SIM_STR-MISSLIMIT sy-vline 
WA_AFWKFRA_SIM_STR-SAMPTYP sy-vline 
WA_AFWKFRA_SIM_STR-KALENDER sy-vline 
WA_AFWKFRA_SIM_STR-SEED sy-vline 
WA_AFWKFRA_SIM_STR-DESTINATION sy-vline 
WA_AFWKFRA_SIM_STR-FUNCTION sy-vline 
WA_AFWKFRA_SIM_STR-VOLART sy-vline 
WA_AFWKFRA_SIM_STR-KORART sy-vline      INTO ld_text SEPARATED BY SPACE.

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