ABAP Select data from SAP table WISP_DATF_SAP_ZKZ into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WISP_DATF_SAP_ZKZ
*  INTO TABLE @DATA(IT_WISP_DATF_SAP_ZKZ2).
*--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_WISP_DATF_SAP_ZKZ INDEX 1 INTO DATA(WA_WISP_DATF_SAP_ZKZ2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WISP_DATF_SAP_ZKZ>-ABSTGVP = 1.
<WISP_DATF_SAP_ZKZ>-ABSTGVO = 1.
<WISP_DATF_SAP_ZKZ>-ABSTGEO = 1.
<WISP_DATF_SAP_ZKZ>-ABSTMNG = 1.
<WISP_DATF_SAP_ZKZ>-AVRUMSGVO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WISP_DATF_SAP_ZKZ-AVRUMSGVP, sy-vline,
  WA_WISP_DATF_SAP_ZKZ-AVRUMSGEO, sy-vline,
  WA_WISP_DATF_SAP_ZKZ-AVRUBMGVO, sy-vline,
  WA_WISP_DATF_SAP_ZKZ-AVRUBMGVP, sy-vline,
  WA_WISP_DATF_SAP_ZKZ-AVRUBMPRS, sy-vline,
  WA_WISP_DATF_SAP_ZKZ-AVRUBMPRSS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WISP_DATF_SAP_ZKZ 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_WISP_DATF_SAP_ZKZ 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_WISP_DATF_SAP_ZKZ INTO WA_WISP_DATF_SAP_ZKZ.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_WISP_DATF_SAP_ZKZ_STR, 
ABSTGVP TYPE STRING,
ABSTGVO TYPE STRING,
ABSTGEO TYPE STRING,
ABSTMNG TYPE STRING,
AVRUMSGVO TYPE STRING,
AVRUMSGVP TYPE STRING,
AVRUMSGEO TYPE STRING,
AVRUBMGVO TYPE STRING,
AVRUBMGVP TYPE STRING,
AVRUBMPRS TYPE STRING,
AVRUBMPRSS TYPE STRING,
SBSTGVP TYPE STRING,
SBSTGVO TYPE STRING,
SBSTGEO TYPE STRING,
SBSTMNG TYPE STRING,
OTBGEO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WISP_DATF_SAP_ZKZ_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_WISP_DATF_SAP_ZKZ_STR-ABSTGVP sy-vline 
WA_WISP_DATF_SAP_ZKZ_STR-ABSTGVO sy-vline 
WA_WISP_DATF_SAP_ZKZ_STR-ABSTGEO sy-vline 
WA_WISP_DATF_SAP_ZKZ_STR-ABSTMNG sy-vline 
WA_WISP_DATF_SAP_ZKZ_STR-AVRUMSGVO sy-vline 
WA_WISP_DATF_SAP_ZKZ_STR-AVRUMSGVP sy-vline 
WA_WISP_DATF_SAP_ZKZ_STR-AVRUMSGEO sy-vline 
WA_WISP_DATF_SAP_ZKZ_STR-AVRUBMGVO sy-vline 
WA_WISP_DATF_SAP_ZKZ_STR-AVRUBMGVP sy-vline 
WA_WISP_DATF_SAP_ZKZ_STR-AVRUBMPRS sy-vline 
WA_WISP_DATF_SAP_ZKZ_STR-AVRUBMPRSS sy-vline 
WA_WISP_DATF_SAP_ZKZ_STR-SBSTGVP sy-vline 
WA_WISP_DATF_SAP_ZKZ_STR-SBSTGVO sy-vline 
WA_WISP_DATF_SAP_ZKZ_STR-SBSTGEO sy-vline 
WA_WISP_DATF_SAP_ZKZ_STR-SBSTMNG sy-vline 
WA_WISP_DATF_SAP_ZKZ_STR-OTBGEO sy-vline      INTO ld_text SEPARATED BY SPACE.

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