ABAP Select data from SAP table J_7LVORG_KEYS_KUNNR into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP J_7LVORG_KEYS_KUNNR 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 J_7LVORG_KEYS_KUNNR. 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 J_7LVORG_KEYS_KUNNR 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_J_7LVORG_KEYS_KUNNR TYPE STANDARD TABLE OF J_7LVORG_KEYS_KUNNR,
      WA_J_7LVORG_KEYS_KUNNR TYPE J_7LVORG_KEYS_KUNNR,
      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: <J_7LVORG_KEYS_KUNNR> TYPE J_7LVORG_KEYS_KUNNR.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_J_7LVORG_KEYS_KUNNR.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM J_7LVORG_KEYS_KUNNR
  INTO TABLE IT_J_7LVORG_KEYS_KUNNR.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM J_7LVORG_KEYS_KUNNR
*  INTO TABLE @DATA(IT_J_7LVORG_KEYS_KUNNR2).
*--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_J_7LVORG_KEYS_KUNNR INDEX 1 INTO DATA(WA_J_7LVORG_KEYS_KUNNR2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_J_7LVORG_KEYS_KUNNR ASSIGNING <J_7LVORG_KEYS_KUNNR>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<J_7LVORG_KEYS_KUNNR>-VDFTYP = 1.
<J_7LVORG_KEYS_KUNNR>-MVKORG = 1.
<J_7LVORG_KEYS_KUNNR>-MVTWEG = 1.
<J_7LVORG_KEYS_KUNNR>-MSPART = 1.
<J_7LVORG_KEYS_KUNNR>-MKUMRK = 1.

ENDLOOP.

LOOP AT IT_J_7LVORG_KEYS_KUNNR INTO WA_J_7LVORG_KEYS_KUNNR.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_J_7LVORG_KEYS_KUNNR-MKUNNR, sy-vline,
  WA_J_7LVORG_KEYS_KUNNR-VKORG, sy-vline,
  WA_J_7LVORG_KEYS_KUNNR-VTWEG, sy-vline,
  WA_J_7LVORG_KEYS_KUNNR-SPART, sy-vline,
  WA_J_7LVORG_KEYS_KUNNR-KUMRK, sy-vline,
  WA_J_7LVORG_KEYS_KUNNR-KUNNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_J_7LVORG_KEYS_KUNNR 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_J_7LVORG_KEYS_KUNNR 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_J_7LVORG_KEYS_KUNNR INTO WA_J_7LVORG_KEYS_KUNNR.


*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 MKUNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_7LVORG_KEYS_KUNNR-MKUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7LVORG_KEYS_KUNNR-MKUNNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_7LVORG_KEYS_KUNNR-KUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7LVORG_KEYS_KUNNR-KUNNR.
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_J_7LVORG_KEYS_KUNNR_STR, 
VDFTYP TYPE STRING,
MVKORG TYPE STRING,
MVTWEG TYPE STRING,
MSPART TYPE STRING,
MKUMRK TYPE STRING,
MKUNNR TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,
KUMRK TYPE STRING,
KUNNR TYPE STRING,
VORGKEY TYPE STRING,
DATAB TYPE STRING,
DATBI TYPE STRING,END OF T_EKKO_STR.
DATA: WA_J_7LVORG_KEYS_KUNNR_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_J_7LVORG_KEYS_KUNNR_STR-VDFTYP sy-vline 
WA_J_7LVORG_KEYS_KUNNR_STR-MVKORG sy-vline 
WA_J_7LVORG_KEYS_KUNNR_STR-MVTWEG sy-vline 
WA_J_7LVORG_KEYS_KUNNR_STR-MSPART sy-vline 
WA_J_7LVORG_KEYS_KUNNR_STR-MKUMRK sy-vline 
WA_J_7LVORG_KEYS_KUNNR_STR-MKUNNR sy-vline 
WA_J_7LVORG_KEYS_KUNNR_STR-VKORG sy-vline 
WA_J_7LVORG_KEYS_KUNNR_STR-VTWEG sy-vline 
WA_J_7LVORG_KEYS_KUNNR_STR-SPART sy-vline 
WA_J_7LVORG_KEYS_KUNNR_STR-KUMRK sy-vline 
WA_J_7LVORG_KEYS_KUNNR_STR-KUNNR sy-vline 
WA_J_7LVORG_KEYS_KUNNR_STR-VORGKEY sy-vline 
WA_J_7LVORG_KEYS_KUNNR_STR-DATAB sy-vline 
WA_J_7LVORG_KEYS_KUNNR_STR-DATBI sy-vline      INTO ld_text SEPARATED BY SPACE.

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