ABAP Select data from SAP table WBHD_NEW into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WBHD_NEW
*  INTO TABLE @DATA(IT_WBHD_NEW2).
*--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_WBHD_NEW INDEX 1 INTO DATA(WA_WBHD_NEW2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WBHD_NEW>-VSART = 1.
<WBHD_NEW>-BSTKD_E = 1.
<WBHD_NEW>-POSEX_E = 1.
<WBHD_NEW>-BSTKD = 1.
<WBHD_NEW>-BSTDK = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WBHD_NEW-BSTDK_E, sy-vline,
  WA_WBHD_NEW-KALSM_MM, sy-vline,
  WA_WBHD_NEW-KNUMV_MM, sy-vline,
  WA_WBHD_NEW-KURSK_SD, sy-vline,
  WA_WBHD_NEW-RESWK, sy-vline,
  WA_WBHD_NEW-RETPC, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WBHD_NEW 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_WBHD_NEW 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_WBHD_NEW INTO WA_WBHD_NEW.


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

*Conversion exit EXCRT, internal->external for field KURSK_SD
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_WBHD_NEW-KURSK_SD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WBHD_NEW-KURSK_SD.
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_WBHD_NEW_STR, 
VSART TYPE STRING,
BSTKD_E TYPE STRING,
POSEX_E TYPE STRING,
BSTKD TYPE STRING,
BSTDK TYPE STRING,
BSTDK_E TYPE STRING,
KALSM_MM TYPE STRING,
KNUMV_MM TYPE STRING,
KURSK_SD TYPE STRING,
RESWK TYPE STRING,
RETPC TYPE STRING,
DPTYP TYPE STRING,
DPPCT TYPE STRING,
DPAMT TYPE STRING,
DPDAT TYPE STRING,
PODKZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WBHD_NEW_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_WBHD_NEW_STR-VSART sy-vline 
WA_WBHD_NEW_STR-BSTKD_E sy-vline 
WA_WBHD_NEW_STR-POSEX_E sy-vline 
WA_WBHD_NEW_STR-BSTKD sy-vline 
WA_WBHD_NEW_STR-BSTDK sy-vline 
WA_WBHD_NEW_STR-BSTDK_E sy-vline 
WA_WBHD_NEW_STR-KALSM_MM sy-vline 
WA_WBHD_NEW_STR-KNUMV_MM sy-vline 
WA_WBHD_NEW_STR-KURSK_SD sy-vline 
WA_WBHD_NEW_STR-RESWK sy-vline 
WA_WBHD_NEW_STR-RETPC sy-vline 
WA_WBHD_NEW_STR-DPTYP sy-vline 
WA_WBHD_NEW_STR-DPPCT sy-vline 
WA_WBHD_NEW_STR-DPAMT sy-vline 
WA_WBHD_NEW_STR-DPDAT sy-vline 
WA_WBHD_NEW_STR-PODKZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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