ABAP Select data from SAP table WPSTATWDLSP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WPSTATWDLSP
*  INTO TABLE @DATA(IT_WPSTATWDLSP2).
*--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_WPSTATWDLSP INDEX 1 INTO DATA(WA_WPSTATWDLSP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WPSTATWDLSP>-GROUP = 1.
<WPSTATWDLSP>-KUNNR = 1.
<WPSTATWDLSP>-MANDT = 1.
<WPSTATWDLSP>-DLDNR = 1.
<WPSTATWDLSP>-LFDNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WPSTATWDLSP-DOCNUM, sy-vline,
  WA_WPSTATWDLSP-DOCTYP, sy-vline,
  WA_WPSTATWDLSP-STKEY, sy-vline,
  WA_WPSTATWDLSP-LTKEY, sy-vline,
  WA_WPSTATWDLSP-ANSEG, sy-vline,
  WA_WPSTATWDLSP-ANLOZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WPSTATWDLSP 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_WPSTATWDLSP 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_WPSTATWDLSP INTO WA_WPSTATWDLSP.


*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 KUNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WPSTATWDLSP-KUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WPSTATWDLSP-KUNNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RCVSYSTEM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WPSTATWDLSP-RCVSYSTEM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WPSTATWDLSP-RCVSYSTEM.
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_WPSTATWDLSP_STR, 
GROUP TYPE STRING,
KUNNR TYPE STRING,
MANDT TYPE STRING,
DLDNR TYPE STRING,
LFDNR TYPE STRING,
DOCNUM TYPE STRING,
DOCTYP TYPE STRING,
STKEY TYPE STRING,
LTKEY TYPE STRING,
ANSEG TYPE STRING,
ANLOZ TYPE STRING,
GESST TYPE STRING,
VSEST TYPE STRING,
ERZDT TYPE STRING,
ERZZT TYPE STRING,
RSPOS TYPE STRING,
RSTRT TYPE STRING,
RFPOS TYPE STRING,
RCVSYSTEM TYPE STRING,
LOG_HDLE_PCK TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WPSTATWDLSP_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_WPSTATWDLSP_STR-GROUP sy-vline 
WA_WPSTATWDLSP_STR-KUNNR sy-vline 
WA_WPSTATWDLSP_STR-MANDT sy-vline 
WA_WPSTATWDLSP_STR-DLDNR sy-vline 
WA_WPSTATWDLSP_STR-LFDNR sy-vline 
WA_WPSTATWDLSP_STR-DOCNUM sy-vline 
WA_WPSTATWDLSP_STR-DOCTYP sy-vline 
WA_WPSTATWDLSP_STR-STKEY sy-vline 
WA_WPSTATWDLSP_STR-LTKEY sy-vline 
WA_WPSTATWDLSP_STR-ANSEG sy-vline 
WA_WPSTATWDLSP_STR-ANLOZ sy-vline 
WA_WPSTATWDLSP_STR-GESST sy-vline 
WA_WPSTATWDLSP_STR-VSEST sy-vline 
WA_WPSTATWDLSP_STR-ERZDT sy-vline 
WA_WPSTATWDLSP_STR-ERZZT sy-vline 
WA_WPSTATWDLSP_STR-RSPOS sy-vline 
WA_WPSTATWDLSP_STR-RSTRT sy-vline 
WA_WPSTATWDLSP_STR-RFPOS sy-vline 
WA_WPSTATWDLSP_STR-RCVSYSTEM sy-vline 
WA_WPSTATWDLSP_STR-LOG_HDLE_PCK sy-vline      INTO ld_text SEPARATED BY SPACE.

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