ABAP Select data from SAP table LJRKVB into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM LJRKVB
*  INTO TABLE @DATA(IT_LJRKVB2).
*--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_LJRKVB INDEX 1 INTO DATA(WA_LJRKVB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<LJRKVB>-MANDT = 1.
<LJRKVB>-VBELN = 1.
<LJRKVB>-JVBTYP = 1.
<LJRKVB>-WAERK = 1.
<LJRKVB>-EKORG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_LJRKVB-KALSM, sy-vline,
  WA_LJRKVB-KNUMV, sy-vline,
  WA_LJRKVB-ABDAT, sy-vline,
  WA_LJRKVB-BELNR, sy-vline,
  WA_LJRKVB-GJAHR, sy-vline,
  WA_LJRKVB-BUPER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_LJRKVB 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_LJRKVB 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_LJRKVB INTO WA_LJRKVB.


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

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

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_LJRKVB-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LJRKVB-GJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EXCRT, internal->external for field KURRF
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_LJRKVB-KURRF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LJRKVB-KURRF.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit EXCRT, internal->external for field KURSK
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_LJRKVB-KURSK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LJRKVB-KURSK.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EXCRT, internal->external for field STCUR
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_LJRKVB-STCUR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LJRKVB-STCUR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field JZUOVBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_LJRKVB-JZUOVBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LJRKVB-JZUOVBELN.
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_LJRKVB_STR, 
MANDT TYPE STRING,
VBELN TYPE STRING,
JVBTYP TYPE STRING,
WAERK TYPE STRING,
EKORG TYPE STRING,
KALSM TYPE STRING,
KNUMV TYPE STRING,
ABDAT TYPE STRING,
BELNR TYPE STRING,
GJAHR TYPE STRING,
BUPER TYPE STRING,
RFBSK TYPE STRING,
POPER TYPE STRING,
KURRF TYPE STRING,
CPKUR TYPE STRING,
VALTG TYPE STRING,
VALDT TYPE STRING,
LAND1 TYPE STRING,
ZTERM TYPE STRING,
BUKRS TYPE STRING,
BRTWR TYPE STRING,
NETWR TYPE STRING,
MWSKZ TYPE STRING,
ZUKRI TYPE STRING,
ERNAM TYPE STRING,
ERZET TYPE STRING,
ERDAT TYPE STRING,
STAFO TYPE STRING,
STWAE TYPE STRING,
STCEG TYPE STRING,
AEDAT TYPE STRING,
JSABRN TYPE STRING,
JSTORN TYPE STRING,
JSNABR TYPE STRING,
STOGRD TYPE STRING,
KURST TYPE STRING,
OBJART TYPE STRING,
KURSK TYPE STRING,
STCUR TYPE STRING,
MANKZ TYPE STRING,
VERSGE TYPE STRING,
GPNR TYPE STRING,
GPNR_ZE TYPE STRING,
FAKVON TYPE STRING,
FAKBIS TYPE STRING,
MONBEW TYPE STRING,
UEBERLART TYPE STRING,
PERNR TYPE STRING,
JSTGVB TYPE STRING,
KTGRD_MA TYPE STRING,
KTGRDVSG TYPE STRING,
SHKZG TYPE STRING,
UMSKZ TYPE STRING,
JPROVKDAT TYPE STRING,
UEBNR TYPE STRING,
XNOMESS TYPE STRING,
VKONT TYPE STRING,
BELNR_FKK TYPE STRING,
UPDKZ TYPE STRING,
HIPOS TYPE STRING,
SELKZ TYPE STRING,
NAMRG TYPE STRING,
XCPDK TYPE STRING,
ADRNR TYPE STRING,
UVALS TYPE STRING,
UVPRS TYPE STRING,
BOKRE TYPE STRING,
JZUOVBELN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_LJRKVB_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_LJRKVB_STR-MANDT sy-vline 
WA_LJRKVB_STR-VBELN sy-vline 
WA_LJRKVB_STR-JVBTYP sy-vline 
WA_LJRKVB_STR-WAERK sy-vline 
WA_LJRKVB_STR-EKORG sy-vline 
WA_LJRKVB_STR-KALSM sy-vline 
WA_LJRKVB_STR-KNUMV sy-vline 
WA_LJRKVB_STR-ABDAT sy-vline 
WA_LJRKVB_STR-BELNR sy-vline 
WA_LJRKVB_STR-GJAHR sy-vline 
WA_LJRKVB_STR-BUPER sy-vline 
WA_LJRKVB_STR-RFBSK sy-vline 
WA_LJRKVB_STR-POPER sy-vline 
WA_LJRKVB_STR-KURRF sy-vline 
WA_LJRKVB_STR-CPKUR sy-vline 
WA_LJRKVB_STR-VALTG sy-vline 
WA_LJRKVB_STR-VALDT sy-vline 
WA_LJRKVB_STR-LAND1 sy-vline 
WA_LJRKVB_STR-ZTERM sy-vline 
WA_LJRKVB_STR-BUKRS sy-vline 
WA_LJRKVB_STR-BRTWR sy-vline 
WA_LJRKVB_STR-NETWR sy-vline 
WA_LJRKVB_STR-MWSKZ sy-vline 
WA_LJRKVB_STR-ZUKRI sy-vline 
WA_LJRKVB_STR-ERNAM sy-vline 
WA_LJRKVB_STR-ERZET sy-vline 
WA_LJRKVB_STR-ERDAT sy-vline 
WA_LJRKVB_STR-STAFO sy-vline 
WA_LJRKVB_STR-STWAE sy-vline 
WA_LJRKVB_STR-STCEG sy-vline 
WA_LJRKVB_STR-AEDAT sy-vline 
WA_LJRKVB_STR-JSABRN sy-vline 
WA_LJRKVB_STR-JSTORN sy-vline 
WA_LJRKVB_STR-JSNABR sy-vline 
WA_LJRKVB_STR-STOGRD sy-vline 
WA_LJRKVB_STR-KURST sy-vline 
WA_LJRKVB_STR-OBJART sy-vline 
WA_LJRKVB_STR-KURSK sy-vline 
WA_LJRKVB_STR-STCUR sy-vline 
WA_LJRKVB_STR-MANKZ sy-vline 
WA_LJRKVB_STR-VERSGE sy-vline 
WA_LJRKVB_STR-GPNR sy-vline 
WA_LJRKVB_STR-GPNR_ZE sy-vline 
WA_LJRKVB_STR-FAKVON sy-vline 
WA_LJRKVB_STR-FAKBIS sy-vline 
WA_LJRKVB_STR-MONBEW sy-vline 
WA_LJRKVB_STR-UEBERLART sy-vline 
WA_LJRKVB_STR-PERNR sy-vline 
WA_LJRKVB_STR-JSTGVB sy-vline 
WA_LJRKVB_STR-KTGRD_MA sy-vline 
WA_LJRKVB_STR-KTGRDVSG sy-vline 
WA_LJRKVB_STR-SHKZG sy-vline 
WA_LJRKVB_STR-UMSKZ sy-vline 
WA_LJRKVB_STR-JPROVKDAT sy-vline 
WA_LJRKVB_STR-UEBNR sy-vline 
WA_LJRKVB_STR-XNOMESS sy-vline 
WA_LJRKVB_STR-VKONT sy-vline 
WA_LJRKVB_STR-BELNR_FKK sy-vline 
WA_LJRKVB_STR-UPDKZ sy-vline 
WA_LJRKVB_STR-HIPOS sy-vline 
WA_LJRKVB_STR-SELKZ sy-vline 
WA_LJRKVB_STR-NAMRG sy-vline 
WA_LJRKVB_STR-XCPDK sy-vline 
WA_LJRKVB_STR-ADRNR sy-vline 
WA_LJRKVB_STR-UVALS sy-vline 
WA_LJRKVB_STR-UVPRS sy-vline 
WA_LJRKVB_STR-BOKRE sy-vline 
WA_LJRKVB_STR-JZUOVBELN sy-vline      INTO ld_text SEPARATED BY SPACE.

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