ABAP Select data from SAP table MCJKAKB into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP MCJKAKB 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 MCJKAKB. 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 MCJKAKB 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_MCJKAKB TYPE STANDARD TABLE OF MCJKAKB,
      WA_MCJKAKB TYPE MCJKAKB,
      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: <MCJKAKB> TYPE MCJKAKB.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MCJKAKB
*  INTO TABLE @DATA(IT_MCJKAKB2).
*--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_MCJKAKB INDEX 1 INTO DATA(WA_MCJKAKB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MCJKAKB>-SUPKZ = 1.
<MCJKAKB>-MANDT = 1.
<MCJKAKB>-VBELN = 1.
<MCJKAKB>-GPAG = 1.
<MCJKAKB>-JPARVWGPAG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MCJKAKB-ANGDT, sy-vline,
  WA_MCJKAKB-BNDDT, sy-vline,
  WA_MCJKAKB-VBTYP, sy-vline,
  WA_MCJKAKB-TRVOG, sy-vline,
  WA_MCJKAKB-AUART, sy-vline,
  WA_MCJKAKB-AUARTGRP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MCJKAKB 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_MCJKAKB 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_MCJKAKB INTO WA_MCJKAKB.


*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_MCJKAKB-VBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MCJKAKB-VBELN.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field KGSWE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MCJKAKB-KGSWE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MCJKAKB-KGSWE.
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_MCJKAKB_STR, 
SUPKZ TYPE STRING,
MANDT TYPE STRING,
VBELN TYPE STRING,
GPAG TYPE STRING,
JPARVWGPAG TYPE STRING,
ANGDT TYPE STRING,
BNDDT TYPE STRING,
VBTYP TYPE STRING,
TRVOG TYPE STRING,
AUART TYPE STRING,
AUARTGRP TYPE STRING,
WAERK TYPE STRING,
NETWR TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,
VKGRP TYPE STRING,
VKBUR TYPE STRING,
EXEMPLART TYPE STRING,
GSBER TYPE STRING,
GSKST TYPE STRING,
KNUMV TYPE STRING,
FAKSP TYPE STRING,
KALSM TYPE STRING,
KURST TYPE STRING,
BSTNK TYPE STRING,
BSARK TYPE STRING,
BSTDK TYPE STRING,
BSTZD TYPE STRING,
IHREZ TYPE STRING,
BNAME TYPE STRING,
TELF1 TYPE STRING,
STAFO TYPE STRING,
STWAE TYPE STRING,
XIMMATRIK TYPE STRING,
IMMATDAT TYPE STRING,
XSEPFKKOPF TYPE STRING,
XREMRECHT TYPE STRING,
REMSP TYPE STRING,
KORRGRD TYPE STRING,
REMVON TYPE STRING,
REMBIS TYPE STRING,
REFBELEG TYPE STRING,
REMDATUM TYPE STRING,
REMSCHEIN TYPE STRING,
IVWDATUM TYPE STRING,
POSNR_LAST TYPE STRING,
POSEX_LAST TYPE STRING,
KPOSN_LAST TYPE STRING,
XFKBASAUFT TYPE STRING,
XFKBASLIEF TYPE STRING,
XJKSOFAKT TYPE STRING,
ERFUSER TYPE STRING,
ERFDATE TYPE STRING,
ERFTIME TYPE STRING,
AENUSER TYPE STRING,
AENDATE TYPE STRING,
AENTIME TYPE STRING,
XWBZABO TYPE STRING,
XFKVDICHT TYPE STRING,
XSTATARC TYPE STRING,
XNOMESS TYPE STRING,
KALSM_AMO TYPE STRING,
XRENEWAL TYPE STRING,
AMORTN TYPE STRING,
REKLERGB TYPE STRING,
REKLTYP TYPE STRING,
REKLDATUM TYPE STRING,
GPNRAG TYPE STRING,
GPNRWE TYPE STRING,
GPNRRE TYPE STRING,
GPNRRG TYPE STRING,
GPNRVM TYPE STRING,
PLZWE TYPE STRING,
PLZRE TYPE STRING,
KGSWE TYPE STRING,
HWAER TYPE STRING,
BUKRS TYPE STRING,
DUMMYUSR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MCJKAKB_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_MCJKAKB_STR-SUPKZ sy-vline 
WA_MCJKAKB_STR-MANDT sy-vline 
WA_MCJKAKB_STR-VBELN sy-vline 
WA_MCJKAKB_STR-GPAG sy-vline 
WA_MCJKAKB_STR-JPARVWGPAG sy-vline 
WA_MCJKAKB_STR-ANGDT sy-vline 
WA_MCJKAKB_STR-BNDDT sy-vline 
WA_MCJKAKB_STR-VBTYP sy-vline 
WA_MCJKAKB_STR-TRVOG sy-vline 
WA_MCJKAKB_STR-AUART sy-vline 
WA_MCJKAKB_STR-AUARTGRP sy-vline 
WA_MCJKAKB_STR-WAERK sy-vline 
WA_MCJKAKB_STR-NETWR sy-vline 
WA_MCJKAKB_STR-VKORG sy-vline 
WA_MCJKAKB_STR-VTWEG sy-vline 
WA_MCJKAKB_STR-SPART sy-vline 
WA_MCJKAKB_STR-VKGRP sy-vline 
WA_MCJKAKB_STR-VKBUR sy-vline 
WA_MCJKAKB_STR-EXEMPLART sy-vline 
WA_MCJKAKB_STR-GSBER sy-vline 
WA_MCJKAKB_STR-GSKST sy-vline 
WA_MCJKAKB_STR-KNUMV sy-vline 
WA_MCJKAKB_STR-FAKSP sy-vline 
WA_MCJKAKB_STR-KALSM sy-vline 
WA_MCJKAKB_STR-KURST sy-vline 
WA_MCJKAKB_STR-BSTNK sy-vline 
WA_MCJKAKB_STR-BSARK sy-vline 
WA_MCJKAKB_STR-BSTDK sy-vline 
WA_MCJKAKB_STR-BSTZD sy-vline 
WA_MCJKAKB_STR-IHREZ sy-vline 
WA_MCJKAKB_STR-BNAME sy-vline 
WA_MCJKAKB_STR-TELF1 sy-vline 
WA_MCJKAKB_STR-STAFO sy-vline 
WA_MCJKAKB_STR-STWAE sy-vline 
WA_MCJKAKB_STR-XIMMATRIK sy-vline 
WA_MCJKAKB_STR-IMMATDAT sy-vline 
WA_MCJKAKB_STR-XSEPFKKOPF sy-vline 
WA_MCJKAKB_STR-XREMRECHT sy-vline 
WA_MCJKAKB_STR-REMSP sy-vline 
WA_MCJKAKB_STR-KORRGRD sy-vline 
WA_MCJKAKB_STR-REMVON sy-vline 
WA_MCJKAKB_STR-REMBIS sy-vline 
WA_MCJKAKB_STR-REFBELEG sy-vline 
WA_MCJKAKB_STR-REMDATUM sy-vline 
WA_MCJKAKB_STR-REMSCHEIN sy-vline 
WA_MCJKAKB_STR-IVWDATUM sy-vline 
WA_MCJKAKB_STR-POSNR_LAST sy-vline 
WA_MCJKAKB_STR-POSEX_LAST sy-vline 
WA_MCJKAKB_STR-KPOSN_LAST sy-vline 
WA_MCJKAKB_STR-XFKBASAUFT sy-vline 
WA_MCJKAKB_STR-XFKBASLIEF sy-vline 
WA_MCJKAKB_STR-XJKSOFAKT sy-vline 
WA_MCJKAKB_STR-ERFUSER sy-vline 
WA_MCJKAKB_STR-ERFDATE sy-vline 
WA_MCJKAKB_STR-ERFTIME sy-vline 
WA_MCJKAKB_STR-AENUSER sy-vline 
WA_MCJKAKB_STR-AENDATE sy-vline 
WA_MCJKAKB_STR-AENTIME sy-vline 
WA_MCJKAKB_STR-XWBZABO sy-vline 
WA_MCJKAKB_STR-XFKVDICHT sy-vline 
WA_MCJKAKB_STR-XSTATARC sy-vline 
WA_MCJKAKB_STR-XNOMESS sy-vline 
WA_MCJKAKB_STR-KALSM_AMO sy-vline 
WA_MCJKAKB_STR-XRENEWAL sy-vline 
WA_MCJKAKB_STR-AMORTN sy-vline 
WA_MCJKAKB_STR-REKLERGB sy-vline 
WA_MCJKAKB_STR-REKLTYP sy-vline 
WA_MCJKAKB_STR-REKLDATUM sy-vline 
WA_MCJKAKB_STR-GPNRAG sy-vline 
WA_MCJKAKB_STR-GPNRWE sy-vline 
WA_MCJKAKB_STR-GPNRRE sy-vline 
WA_MCJKAKB_STR-GPNRRG sy-vline 
WA_MCJKAKB_STR-GPNRVM sy-vline 
WA_MCJKAKB_STR-PLZWE sy-vline 
WA_MCJKAKB_STR-PLZRE sy-vline 
WA_MCJKAKB_STR-KGSWE sy-vline 
WA_MCJKAKB_STR-HWAER sy-vline 
WA_MCJKAKB_STR-BUKRS sy-vline 
WA_MCJKAKB_STR-DUMMYUSR sy-vline      INTO ld_text SEPARATED BY SPACE.

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