ABAP Select data from SAP table WCSSCR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WCSSCR
*  INTO TABLE @DATA(IT_WCSSCR2).
*--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_WCSSCR INDEX 1 INTO DATA(WA_WCSSCR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WCSSCR>-MODEL = 1.
<WCSSCR>-IWERK = 1.
<WCSSCR>-OBJART = 1.
<WCSSCR>-OBJTYP = 1.
<WCSSCR>-OBJNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WCSSCR-USAGE, sy-vline,
  WA_WCSSCR-USECTRL, sy-vline,
  WA_WCSSCR-PMSOG, sy-vline,
  WA_WCSSCR-ERNAM, sy-vline,
  WA_WCSSCR-ERDAT, sy-vline,
  WA_WCSSCR-AENAM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WCSSCR 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_WCSSCR 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_WCSSCR INTO WA_WCSSCR.


*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 PARVW, internal->external for field PARVW
CALL FUNCTION 'CONVERSION_EXIT_PARVW_OUTPUT'
  EXPORTING
    input =                      WA_WCSSCR-PARVW
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WCSSCR-PARVW.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field DOKNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WCSSCR-DOKNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WCSSCR-DOKNR.
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_WCSSCR_STR, 
MODEL TYPE STRING,
IWERK TYPE STRING,
OBJART TYPE STRING,
OBJTYP TYPE STRING,
OBJNR TYPE STRING,
USAGE TYPE STRING,
USECTRL TYPE STRING,
PMSOG TYPE STRING,
ERNAM TYPE STRING,
ERDAT TYPE STRING,
AENAM TYPE STRING,
AEDAT TYPE STRING,
ISSUED TYPE STRING,
REVOKED TYPE STRING,
PRIOTYP TYPE STRING,
PRIOK TYPE STRING,
CATPROFILE TYPE STRING,
CATTYP1 TYPE STRING,
CATTXT1 TYPE STRING,
CATTYP2 TYPE STRING,
CATTXT2 TYPE STRING,
STSMA TYPE STRING,
STATINCL TYPE STRING,
STATEXCL TYPE STRING,
PARGR TYPE STRING,
PARVW TYPE STRING,
PARNR TYPE STRING,
STRNO TYPE STRING,
DOKAR TYPE STRING,
DOKNR TYPE STRING,
DOKVR TYPE STRING,
DOKTL TYPE STRING,
CATTYP TYPE STRING,
CODEGRP TYPE STRING,
CODE TYPE STRING,
STXT TYPE STRING,
DOCFLG TYPE STRING,
APRVFLG TYPE STRING,
UPASGNFLG TYPE STRING,
DNASGNFLG TYPE STRING,
MOBIFLG TYPE STRING,
STEPFLG TYPE STRING,
WKPTFLG TYPE STRING,
REFOBJ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WCSSCR_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_WCSSCR_STR-MODEL sy-vline 
WA_WCSSCR_STR-IWERK sy-vline 
WA_WCSSCR_STR-OBJART sy-vline 
WA_WCSSCR_STR-OBJTYP sy-vline 
WA_WCSSCR_STR-OBJNR sy-vline 
WA_WCSSCR_STR-USAGE sy-vline 
WA_WCSSCR_STR-USECTRL sy-vline 
WA_WCSSCR_STR-PMSOG sy-vline 
WA_WCSSCR_STR-ERNAM sy-vline 
WA_WCSSCR_STR-ERDAT sy-vline 
WA_WCSSCR_STR-AENAM sy-vline 
WA_WCSSCR_STR-AEDAT sy-vline 
WA_WCSSCR_STR-ISSUED sy-vline 
WA_WCSSCR_STR-REVOKED sy-vline 
WA_WCSSCR_STR-PRIOTYP sy-vline 
WA_WCSSCR_STR-PRIOK sy-vline 
WA_WCSSCR_STR-CATPROFILE sy-vline 
WA_WCSSCR_STR-CATTYP1 sy-vline 
WA_WCSSCR_STR-CATTXT1 sy-vline 
WA_WCSSCR_STR-CATTYP2 sy-vline 
WA_WCSSCR_STR-CATTXT2 sy-vline 
WA_WCSSCR_STR-STSMA sy-vline 
WA_WCSSCR_STR-STATINCL sy-vline 
WA_WCSSCR_STR-STATEXCL sy-vline 
WA_WCSSCR_STR-PARGR sy-vline 
WA_WCSSCR_STR-PARVW sy-vline 
WA_WCSSCR_STR-PARNR sy-vline 
WA_WCSSCR_STR-STRNO sy-vline 
WA_WCSSCR_STR-DOKAR sy-vline 
WA_WCSSCR_STR-DOKNR sy-vline 
WA_WCSSCR_STR-DOKVR sy-vline 
WA_WCSSCR_STR-DOKTL sy-vline 
WA_WCSSCR_STR-CATTYP sy-vline 
WA_WCSSCR_STR-CODEGRP sy-vline 
WA_WCSSCR_STR-CODE sy-vline 
WA_WCSSCR_STR-STXT sy-vline 
WA_WCSSCR_STR-DOCFLG sy-vline 
WA_WCSSCR_STR-APRVFLG sy-vline 
WA_WCSSCR_STR-UPASGNFLG sy-vline 
WA_WCSSCR_STR-DNASGNFLG sy-vline 
WA_WCSSCR_STR-MOBIFLG sy-vline 
WA_WCSSCR_STR-STEPFLG sy-vline 
WA_WCSSCR_STR-WKPTFLG sy-vline 
WA_WCSSCR_STR-REFOBJ sy-vline      INTO ld_text SEPARATED BY SPACE.

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