ABAP Select data from SAP table J_7LKF01 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP J_7LKF01 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_7LKF01. 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_7LKF01 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_7LKF01 TYPE STANDARD TABLE OF J_7LKF01,
      WA_J_7LKF01 TYPE J_7LKF01,
      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_7LKF01> TYPE J_7LKF01.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_J_7LKF01.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM J_7LKF01
  INTO TABLE IT_J_7LKF01.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM J_7LKF01
*  INTO TABLE @DATA(IT_J_7LKF012).
*--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_7LKF01 INDEX 1 INTO DATA(WA_J_7LKF012).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_J_7LKF01 ASSIGNING <J_7LKF01>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<J_7LKF01>-MANDT = 1.
<J_7LKF01>-VIM_MARKED = 1.
<J_7LKF01>-VDFTYP = 1.
<J_7LKF01>-ENTNA = 1.
<J_7LKF01>-BUKRS = 1.

ENDLOOP.

LOOP AT IT_J_7LKF01 INTO WA_J_7LKF01.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_J_7LKF01-LAND1, sy-vline,
  WA_J_7LKF01-VKORG, sy-vline,
  WA_J_7LKF01-VTWEG, sy-vline,
  WA_J_7LKF01-SPART, sy-vline,
  WA_J_7LKF01-KUMRK, sy-vline,
  WA_J_7LKF01-KUNNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_J_7LKF01 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_7LKF01 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_7LKF01 INTO WA_J_7LKF01.


*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_J_7LKF01-KUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7LKF01-KUNNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ADRNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_7LKF01-ADRNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7LKF01-ADRNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_7LKF01-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7LKF01-LIFNR.
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_7LKF01_STR, 
MANDT TYPE STRING,
VIM_MARKED TYPE STRING,
VDFTYP TYPE STRING,
ENTNA TYPE STRING,
BUKRS TYPE STRING,
LAND1 TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,
KUMRK TYPE STRING,
KUNNR TYPE STRING,
ADRNR TYPE STRING,
EKORG TYPE STRING,
LIMRK TYPE STRING,
LIFNR TYPE STRING,
KZFSPLIT TYPE STRING,
KZFREGIO TYPE STRING,
KZFZENTR TYPE STRING,
SPLIT TYPE STRING,
KOKEY TYPE STRING,
SPLIT_MAN TYPE STRING,
VORGKEY TYPE STRING,
LVORMADM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_J_7LKF01_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_7LKF01_STR-MANDT sy-vline 
WA_J_7LKF01_STR-VIM_MARKED sy-vline 
WA_J_7LKF01_STR-VDFTYP sy-vline 
WA_J_7LKF01_STR-ENTNA sy-vline 
WA_J_7LKF01_STR-BUKRS sy-vline 
WA_J_7LKF01_STR-LAND1 sy-vline 
WA_J_7LKF01_STR-VKORG sy-vline 
WA_J_7LKF01_STR-VTWEG sy-vline 
WA_J_7LKF01_STR-SPART sy-vline 
WA_J_7LKF01_STR-KUMRK sy-vline 
WA_J_7LKF01_STR-KUNNR sy-vline 
WA_J_7LKF01_STR-ADRNR sy-vline 
WA_J_7LKF01_STR-EKORG sy-vline 
WA_J_7LKF01_STR-LIMRK sy-vline 
WA_J_7LKF01_STR-LIFNR sy-vline 
WA_J_7LKF01_STR-KZFSPLIT sy-vline 
WA_J_7LKF01_STR-KZFREGIO sy-vline 
WA_J_7LKF01_STR-KZFZENTR sy-vline 
WA_J_7LKF01_STR-SPLIT sy-vline 
WA_J_7LKF01_STR-KOKEY sy-vline 
WA_J_7LKF01_STR-SPLIT_MAN sy-vline 
WA_J_7LKF01_STR-VORGKEY sy-vline 
WA_J_7LKF01_STR-LVORMADM sy-vline      INTO ld_text SEPARATED BY SPACE.

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