ABAP Select data from SAP table J_7LKM4 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP J_7LKM4 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_7LKM4. 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_7LKM4 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_7LKM4 TYPE STANDARD TABLE OF J_7LKM4,
      WA_J_7LKM4 TYPE J_7LKM4,
      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_7LKM4> TYPE J_7LKM4.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_J_7LKM4.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM J_7LKM4
  INTO TABLE IT_J_7LKM4.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM J_7LKM4
*  INTO TABLE @DATA(IT_J_7LKM42).
*--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_7LKM4 INDEX 1 INTO DATA(WA_J_7LKM42).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_J_7LKM4 ASSIGNING <J_7LKM4>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<J_7LKM4>-MANDT = 1.
<J_7LKM4>-MATNR = 1.
<J_7LKM4>-MAKTX = 1.
<J_7LKM4>-MTYP = 1.
<J_7LKM4>-MSTAT = 1.

ENDLOOP.

LOOP AT IT_J_7LKM4 INTO WA_J_7LKM4.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_J_7LKM4-MSTATTXT, sy-vline,
  WA_J_7LKM4-MSTATTXT1, sy-vline,
  WA_J_7LKM4-MSTATTXT2, sy-vline,
  WA_J_7LKM4-MSTATTXT3, sy-vline,
  WA_J_7LKM4-MSTATTXT5, sy-vline,
  WA_J_7LKM4-MAKTIVKZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_J_7LKM4 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_7LKM4 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_7LKM4 INTO WA_J_7LKM4.


*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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_J_7LKM4-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7LKM4-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field RMATN
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_J_7LKM4-RMATN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7LKM4-RMATN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field BASME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_J_7LKM4-BASME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7LKM4-BASME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VRKME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_J_7LKM4-VRKME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7LKM4-VRKME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field VRPNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_J_7LKM4-VRPNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7LKM4-VRPNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_J_7LKM4-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7LKM4-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ENTNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_7LKM4-ENTNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7LKM4-ENTNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field STLNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_J_7LKM4-STLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7LKM4-STLNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field STLAL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_7LKM4-STLAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7LKM4-STLAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VOLEH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_J_7LKM4-VOLEH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7LKM4-VOLEH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field GEWEI
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_J_7LKM4-GEWEI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7LKM4-GEWEI.
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_7LKM4_STR, 
MANDT TYPE STRING,
MATNR TYPE STRING,
MAKTX TYPE STRING,
MTYP TYPE STRING,
MSTAT TYPE STRING,
MSTATTXT TYPE STRING,
MSTATTXT1 TYPE STRING,
MSTATTXT2 TYPE STRING,
MSTATTXT3 TYPE STRING,
MSTATTXT5 TYPE STRING,
MAKTIVKZ TYPE STRING,
RMATN TYPE STRING,
RMAKTX TYPE STRING,
REFTYP TYPE STRING,
REFTYPTXT TYPE STRING,
BUKRS TYPE STRING,
LAND1 TYPE STRING,
BASME TYPE STRING,
VRKME TYPE STRING,
VARIANTE TYPE STRING,
VRPNR TYPE STRING,
VPTYP TYPE STRING,
VPART TYPE STRING,
TRENNKZ TYPE STRING,
VPGRP TYPE STRING,
VPKTX TYPE STRING,
MEINS TYPE STRING,
FMENG TYPE STRING,
KPEIN TYPE STRING,
KPMZA TYPE STRING,
KPMNE TYPE STRING,
GMENG TYPE STRING,
ENTNR TYPE STRING,
ENTNA TYPE STRING,
WAERE TYPE STRING,
WAERS TYPE STRING,
WAERA TYPE STRING,
SPLIT TYPE STRING,
FAKTOR TYPE STRING,
PREISE TYPE STRING,
PREISR TYPE STRING,
PREISA TYPE STRING,
PLVRS TYPE STRING,
KPROZ TYPE STRING,
KOKEY TYPE STRING,
KZPRAD TYPE STRING,
MWSKZ TYPE STRING,
WERKS TYPE STRING,
STLAN TYPE STRING,
STLNR TYPE STRING,
STLAL TYPE STRING,
VOLUM TYPE STRING,
VOLEH TYPE STRING,
BRGEW TYPE STRING,
GEWEI TYPE STRING,
TARA TYPE STRING,
DATAB TYPE STRING,
DATBI TYPE STRING,
VRSIO TYPE STRING,
PERIODE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_J_7LKM4_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_7LKM4_STR-MANDT sy-vline 
WA_J_7LKM4_STR-MATNR sy-vline 
WA_J_7LKM4_STR-MAKTX sy-vline 
WA_J_7LKM4_STR-MTYP sy-vline 
WA_J_7LKM4_STR-MSTAT sy-vline 
WA_J_7LKM4_STR-MSTATTXT sy-vline 
WA_J_7LKM4_STR-MSTATTXT1 sy-vline 
WA_J_7LKM4_STR-MSTATTXT2 sy-vline 
WA_J_7LKM4_STR-MSTATTXT3 sy-vline 
WA_J_7LKM4_STR-MSTATTXT5 sy-vline 
WA_J_7LKM4_STR-MAKTIVKZ sy-vline 
WA_J_7LKM4_STR-RMATN sy-vline 
WA_J_7LKM4_STR-RMAKTX sy-vline 
WA_J_7LKM4_STR-REFTYP sy-vline 
WA_J_7LKM4_STR-REFTYPTXT sy-vline 
WA_J_7LKM4_STR-BUKRS sy-vline 
WA_J_7LKM4_STR-LAND1 sy-vline 
WA_J_7LKM4_STR-BASME sy-vline 
WA_J_7LKM4_STR-VRKME sy-vline 
WA_J_7LKM4_STR-VARIANTE sy-vline 
WA_J_7LKM4_STR-VRPNR sy-vline 
WA_J_7LKM4_STR-VPTYP sy-vline 
WA_J_7LKM4_STR-VPART sy-vline 
WA_J_7LKM4_STR-TRENNKZ sy-vline 
WA_J_7LKM4_STR-VPGRP sy-vline 
WA_J_7LKM4_STR-VPKTX sy-vline 
WA_J_7LKM4_STR-MEINS sy-vline 
WA_J_7LKM4_STR-FMENG sy-vline 
WA_J_7LKM4_STR-KPEIN sy-vline 
WA_J_7LKM4_STR-KPMZA sy-vline 
WA_J_7LKM4_STR-KPMNE sy-vline 
WA_J_7LKM4_STR-GMENG sy-vline 
WA_J_7LKM4_STR-ENTNR sy-vline 
WA_J_7LKM4_STR-ENTNA sy-vline 
WA_J_7LKM4_STR-WAERE sy-vline 
WA_J_7LKM4_STR-WAERS sy-vline 
WA_J_7LKM4_STR-WAERA sy-vline 
WA_J_7LKM4_STR-SPLIT sy-vline 
WA_J_7LKM4_STR-FAKTOR sy-vline 
WA_J_7LKM4_STR-PREISE sy-vline 
WA_J_7LKM4_STR-PREISR sy-vline 
WA_J_7LKM4_STR-PREISA sy-vline 
WA_J_7LKM4_STR-PLVRS sy-vline 
WA_J_7LKM4_STR-KPROZ sy-vline 
WA_J_7LKM4_STR-KOKEY sy-vline 
WA_J_7LKM4_STR-KZPRAD sy-vline 
WA_J_7LKM4_STR-MWSKZ sy-vline 
WA_J_7LKM4_STR-WERKS sy-vline 
WA_J_7LKM4_STR-STLAN sy-vline 
WA_J_7LKM4_STR-STLNR sy-vline 
WA_J_7LKM4_STR-STLAL sy-vline 
WA_J_7LKM4_STR-VOLUM sy-vline 
WA_J_7LKM4_STR-VOLEH sy-vline 
WA_J_7LKM4_STR-BRGEW sy-vline 
WA_J_7LKM4_STR-GEWEI sy-vline 
WA_J_7LKM4_STR-TARA sy-vline 
WA_J_7LKM4_STR-DATAB sy-vline 
WA_J_7LKM4_STR-DATBI sy-vline 
WA_J_7LKM4_STR-VRSIO sy-vline 
WA_J_7LKM4_STR-PERIODE sy-vline      INTO ld_text SEPARATED BY SPACE.

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