ABAP Select data from SAP table WBHK_APPEND into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WBHK_APPEND
*  INTO TABLE @DATA(IT_WBHK_APPEND2).
*--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_WBHK_APPEND INDEX 1 INTO DATA(WA_WBHK_APPEND2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WBHK_APPEND>-TEW_TYPE = 1.
<WBHK_APPEND>-SUCC_ARCH = 1.
<WBHK_APPEND>-ABRVW = 1.
<WBHK_APPEND>-KNUMV_SD = 1.
<WBHK_APPEND>-PRICING_TYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WBHK_APPEND-KALSM_SD, sy-vline,
  WA_WBHK_APPEND-PS_PSP_PNR, sy-vline,
  WA_WBHK_APPEND-LAST_CHANGE_UUID, sy-vline,
  WA_WBHK_APPEND-CREATED_FROM, sy-vline,
  WA_WBHK_APPEND-COMPANY_CODE, sy-vline,
  WA_WBHK_APPEND-GUEBG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WBHK_APPEND 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_WBHK_APPEND 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_WBHK_APPEND INTO WA_WBHK_APPEND.


*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 ABPSP, internal->external for field PS_PSP_PNR
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_WBHK_APPEND-PS_PSP_PNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WBHK_APPEND-PS_PSP_PNR.
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_WBHK_APPEND_STR, 
TEW_TYPE TYPE STRING,
SUCC_ARCH TYPE STRING,
ABRVW TYPE STRING,
KNUMV_SD TYPE STRING,
PRICING_TYPE TYPE STRING,
KALSM_SD TYPE STRING,
PS_PSP_PNR TYPE STRING,
LAST_CHANGE_UUID TYPE STRING,
CREATED_FROM TYPE STRING,
COMPANY_CODE TYPE STRING,
GUEBG TYPE STRING,
GUEEN TYPE STRING,
CONSOL_IT_EXIST TYPE STRING,
SET_VARIANT TYPE STRING,
IN_APPROVAL TYPE STRING,
CONSOL_EMCSI TYPE STRING,
CONSOL_SLCSI TYPE STRING,
CONSOL_LCCSI TYPE STRING,
CONSOL_EMCSO TYPE STRING,
CONSOL_SLCSO TYPE STRING,
CONSOL_LCCSO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WBHK_APPEND_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_WBHK_APPEND_STR-TEW_TYPE sy-vline 
WA_WBHK_APPEND_STR-SUCC_ARCH sy-vline 
WA_WBHK_APPEND_STR-ABRVW sy-vline 
WA_WBHK_APPEND_STR-KNUMV_SD sy-vline 
WA_WBHK_APPEND_STR-PRICING_TYPE sy-vline 
WA_WBHK_APPEND_STR-KALSM_SD sy-vline 
WA_WBHK_APPEND_STR-PS_PSP_PNR sy-vline 
WA_WBHK_APPEND_STR-LAST_CHANGE_UUID sy-vline 
WA_WBHK_APPEND_STR-CREATED_FROM sy-vline 
WA_WBHK_APPEND_STR-COMPANY_CODE sy-vline 
WA_WBHK_APPEND_STR-GUEBG sy-vline 
WA_WBHK_APPEND_STR-GUEEN sy-vline 
WA_WBHK_APPEND_STR-CONSOL_IT_EXIST sy-vline 
WA_WBHK_APPEND_STR-SET_VARIANT sy-vline 
WA_WBHK_APPEND_STR-IN_APPROVAL sy-vline 
WA_WBHK_APPEND_STR-CONSOL_EMCSI sy-vline 
WA_WBHK_APPEND_STR-CONSOL_SLCSI sy-vline 
WA_WBHK_APPEND_STR-CONSOL_LCCSI sy-vline 
WA_WBHK_APPEND_STR-CONSOL_EMCSO sy-vline 
WA_WBHK_APPEND_STR-CONSOL_SLCSO sy-vline 
WA_WBHK_APPEND_STR-CONSOL_LCCSO sy-vline      INTO ld_text SEPARATED BY SPACE.

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