ABAP Select data from SAP table PSS_DRF_WBSELEMENT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PSS_DRF_WBSELEMENT
*  INTO TABLE @DATA(IT_PSS_DRF_WBSELEMENT2).
*--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_PSS_DRF_WBSELEMENT INDEX 1 INTO DATA(WA_PSS_DRF_WBSELEMENT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PSS_DRF_WBSELEMENT>-POSID = 1.
<PSS_DRF_WBSELEMENT>-OBJNR = 1.
<PSS_DRF_WBSELEMENT>-PSPNR = 1.
<PSS_DRF_WBSELEMENT>-ACTION_CODE = 1.
<PSS_DRF_WBSELEMENT>-PSPHI = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PSS_DRF_WBSELEMENT-POST1, sy-vline,
  WA_PSS_DRF_WBSELEMENT-PBUKR, sy-vline,
  WA_PSS_DRF_WBSELEMENT-PKOKR, sy-vline,
  WA_PSS_DRF_WBSELEMENT-PRCTR, sy-vline,
  WA_PSS_DRF_WBSELEMENT-WERKS, sy-vline,
  WA_PSS_DRF_WBSELEMENT-AKSTL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PSS_DRF_WBSELEMENT 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_PSS_DRF_WBSELEMENT 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_PSS_DRF_WBSELEMENT INTO WA_PSS_DRF_WBSELEMENT.


*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 ABPSN, internal->external for field POSID
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_PSS_DRF_WBSELEMENT-POSID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSS_DRF_WBSELEMENT-POSID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field PSPNR
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_PSS_DRF_WBSELEMENT-PSPNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSS_DRF_WBSELEMENT-PSPNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit KONPD, internal->external for field PSPHI
CALL FUNCTION 'CONVERSION_EXIT_KONPD_OUTPUT'
  EXPORTING
    input =                      WA_PSS_DRF_WBSELEMENT-PSPHI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSS_DRF_WBSELEMENT-PSPHI.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit SCOPE, internal->external for field SCOPE
CALL FUNCTION 'CONVERSION_EXIT_SCOPE_OUTPUT'
  EXPORTING
    input =                      WA_PSS_DRF_WBSELEMENT-SCOPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSS_DRF_WBSELEMENT-SCOPE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSN, internal->external for field PSPID
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_PSS_DRF_WBSELEMENT-PSPID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSS_DRF_WBSELEMENT-PSPID.
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_PSS_DRF_WBSELEMENT_STR, 
POSID TYPE STRING,
OBJNR TYPE STRING,
PSPNR TYPE STRING,
ACTION_CODE TYPE STRING,
PSPHI TYPE STRING,
POST1 TYPE STRING,
PBUKR TYPE STRING,
PKOKR TYPE STRING,
PRCTR TYPE STRING,
WERKS TYPE STRING,
AKSTL TYPE STRING,
AKOKR TYPE STRING,
FKSTL TYPE STRING,
FKOKR TYPE STRING,
PWPOS TYPE STRING,
KOSTL TYPE STRING,
STORT TYPE STRING,
SCOPE TYPE STRING,
TXJCD TYPE STRING,
PLAKZ TYPE STRING,
BELKZ TYPE STRING,
FAKKZ TYPE STRING,
XSTAT TYPE STRING,
PSPID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PSS_DRF_WBSELEMENT_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_PSS_DRF_WBSELEMENT_STR-POSID sy-vline 
WA_PSS_DRF_WBSELEMENT_STR-OBJNR sy-vline 
WA_PSS_DRF_WBSELEMENT_STR-PSPNR sy-vline 
WA_PSS_DRF_WBSELEMENT_STR-ACTION_CODE sy-vline 
WA_PSS_DRF_WBSELEMENT_STR-PSPHI sy-vline 
WA_PSS_DRF_WBSELEMENT_STR-POST1 sy-vline 
WA_PSS_DRF_WBSELEMENT_STR-PBUKR sy-vline 
WA_PSS_DRF_WBSELEMENT_STR-PKOKR sy-vline 
WA_PSS_DRF_WBSELEMENT_STR-PRCTR sy-vline 
WA_PSS_DRF_WBSELEMENT_STR-WERKS sy-vline 
WA_PSS_DRF_WBSELEMENT_STR-AKSTL sy-vline 
WA_PSS_DRF_WBSELEMENT_STR-AKOKR sy-vline 
WA_PSS_DRF_WBSELEMENT_STR-FKSTL sy-vline 
WA_PSS_DRF_WBSELEMENT_STR-FKOKR sy-vline 
WA_PSS_DRF_WBSELEMENT_STR-PWPOS sy-vline 
WA_PSS_DRF_WBSELEMENT_STR-KOSTL sy-vline 
WA_PSS_DRF_WBSELEMENT_STR-STORT sy-vline 
WA_PSS_DRF_WBSELEMENT_STR-SCOPE sy-vline 
WA_PSS_DRF_WBSELEMENT_STR-TXJCD sy-vline 
WA_PSS_DRF_WBSELEMENT_STR-PLAKZ sy-vline 
WA_PSS_DRF_WBSELEMENT_STR-BELKZ sy-vline 
WA_PSS_DRF_WBSELEMENT_STR-FAKKZ sy-vline 
WA_PSS_DRF_WBSELEMENT_STR-XSTAT sy-vline 
WA_PSS_DRF_WBSELEMENT_STR-PSPID sy-vline      INTO ld_text SEPARATED BY SPACE.

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