ABAP Select data from SAP table WRF_ORG_PR_HIST_DISP_STY into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WRF_ORG_PR_HIST_DISP_STY
*  INTO TABLE @DATA(IT_WRF_ORG_PR_HIST_DISP_STY2).
*--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_WRF_ORG_PR_HIST_DISP_STY INDEX 1 INTO DATA(WA_WRF_ORG_PR_HIST_DISP_STY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WRF_ORG_PR_HIST_DISP_STY>-MATNR = 1.
<WRF_ORG_PR_HIST_DISP_STY>-MAKTX = 1.
<WRF_ORG_PR_HIST_DISP_STY>-ATTYP = 1.
<WRF_ORG_PR_HIST_DISP_STY>-WERKS = 1.
<WRF_ORG_PR_HIST_DISP_STY>-NAME1 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WRF_ORG_PR_HIST_DISP_STY-VLFKZ, sy-vline,
  WA_WRF_ORG_PR_HIST_DISP_STY-DATAB, sy-vline,
  WA_WRF_ORG_PR_HIST_DISP_STY-TIMESTMP, sy-vline,
  WA_WRF_ORG_PR_HIST_DISP_STY-DATBI, sy-vline,
  WA_WRF_ORG_PR_HIST_DISP_STY-REASON, sy-vline,
  WA_WRF_ORG_PR_HIST_DISP_STY-REASON_TXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WRF_ORG_PR_HIST_DISP_STY 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_WRF_ORG_PR_HIST_DISP_STY 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_WRF_ORG_PR_HIST_DISP_STY INTO WA_WRF_ORG_PR_HIST_DISP_STY.


*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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_WRF_ORG_PR_HIST_DISP_STY-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WRF_ORG_PR_HIST_DISP_STY-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REASON
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WRF_ORG_PR_HIST_DISP_STY-REASON
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WRF_ORG_PR_HIST_DISP_STY-REASON.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VKMEIN_BT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_WRF_ORG_PR_HIST_DISP_STY-VKMEIN_BT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WRF_ORG_PR_HIST_DISP_STY-VKMEIN_BT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VKMEIN_NT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_WRF_ORG_PR_HIST_DISP_STY-VKMEIN_NT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WRF_ORG_PR_HIST_DISP_STY-VKMEIN_NT.
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_WRF_ORG_PR_HIST_DISP_STY_STR, 
MATNR TYPE STRING,
MAKTX TYPE STRING,
ATTYP TYPE STRING,
WERKS TYPE STRING,
NAME1 TYPE STRING,
VLFKZ TYPE STRING,
DATAB TYPE STRING,
TIMESTMP TYPE STRING,
DATBI TYPE STRING,
REASON TYPE STRING,
REASON_TXT TYPE STRING,
VPR_BT TYPE STRING,
VWAER_BT TYPE STRING,
VRKPE_BT TYPE STRING,
VKMEIN_BT TYPE STRING,
VPR_NT TYPE STRING,
VWAER_NT TYPE STRING,
VRKPE_NT TYPE STRING,
VKMEIN_NT TYPE STRING,
VPDAT TYPE STRING,
ORIGIN TYPE STRING,
FREE_TXT TYPE STRING,
AENAM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WRF_ORG_PR_HIST_DISP_STY_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_WRF_ORG_PR_HIST_DISP_STY_STR-MATNR sy-vline 
WA_WRF_ORG_PR_HIST_DISP_STY_STR-MAKTX sy-vline 
WA_WRF_ORG_PR_HIST_DISP_STY_STR-ATTYP sy-vline 
WA_WRF_ORG_PR_HIST_DISP_STY_STR-WERKS sy-vline 
WA_WRF_ORG_PR_HIST_DISP_STY_STR-NAME1 sy-vline 
WA_WRF_ORG_PR_HIST_DISP_STY_STR-VLFKZ sy-vline 
WA_WRF_ORG_PR_HIST_DISP_STY_STR-DATAB sy-vline 
WA_WRF_ORG_PR_HIST_DISP_STY_STR-TIMESTMP sy-vline 
WA_WRF_ORG_PR_HIST_DISP_STY_STR-DATBI sy-vline 
WA_WRF_ORG_PR_HIST_DISP_STY_STR-REASON sy-vline 
WA_WRF_ORG_PR_HIST_DISP_STY_STR-REASON_TXT sy-vline 
WA_WRF_ORG_PR_HIST_DISP_STY_STR-VPR_BT sy-vline 
WA_WRF_ORG_PR_HIST_DISP_STY_STR-VWAER_BT sy-vline 
WA_WRF_ORG_PR_HIST_DISP_STY_STR-VRKPE_BT sy-vline 
WA_WRF_ORG_PR_HIST_DISP_STY_STR-VKMEIN_BT sy-vline 
WA_WRF_ORG_PR_HIST_DISP_STY_STR-VPR_NT sy-vline 
WA_WRF_ORG_PR_HIST_DISP_STY_STR-VWAER_NT sy-vline 
WA_WRF_ORG_PR_HIST_DISP_STY_STR-VRKPE_NT sy-vline 
WA_WRF_ORG_PR_HIST_DISP_STY_STR-VKMEIN_NT sy-vline 
WA_WRF_ORG_PR_HIST_DISP_STY_STR-VPDAT sy-vline 
WA_WRF_ORG_PR_HIST_DISP_STY_STR-ORIGIN sy-vline 
WA_WRF_ORG_PR_HIST_DISP_STY_STR-FREE_TXT sy-vline 
WA_WRF_ORG_PR_HIST_DISP_STY_STR-AENAM sy-vline      INTO ld_text SEPARATED BY SPACE.

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