ABAP Select data from SAP table EKB_KORR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EKB_KORR
*  INTO TABLE @DATA(IT_EKB_KORR2).
*--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_EKB_KORR INDEX 1 INTO DATA(WA_EKB_KORR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EKB_KORR>-MANDT = 1.
<EKB_KORR>-PAKET = 1.
<EKB_KORR>-BUKRS = 1.
<EKB_KORR>-HKONT = 1.
<EKB_KORR>-GSBER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EKB_KORR-ZUONR, sy-vline,
  WA_EKB_KORR-CURTP, sy-vline,
  WA_EKB_KORR-LPERI, sy-vline,
  WA_EKB_KORR-LJAHR, sy-vline,
  WA_EKB_KORR-SHKZG, sy-vline,
  WA_EKB_KORR-VALUE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EKB_KORR 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_EKB_KORR 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_EKB_KORR INTO WA_EKB_KORR.


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

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

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

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

*Conversion exit ALPHA, internal->external for field EBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EKB_KORR-EBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EKB_KORR-EBELN.
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_EKB_KORR_STR, 
MANDT TYPE STRING,
PAKET TYPE STRING,
BUKRS TYPE STRING,
HKONT TYPE STRING,
GSBER TYPE STRING,
ZUONR TYPE STRING,
CURTP TYPE STRING,
LPERI TYPE STRING,
LJAHR TYPE STRING,
SHKZG TYPE STRING,
VALUE TYPE STRING,
VMVAL TYPE STRING,
VJVAL TYPE STRING,
WAERS TYPE STRING,
KOART TYPE STRING,
KTOSL TYPE STRING,
REPID TYPE STRING,
BELNR TYPE STRING,
GJAHR TYPE STRING,
BUDAT TYPE STRING,
HWERT TYPE STRING,
DMBTR TYPE STRING,
MENGE TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EKB_KORR_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_EKB_KORR_STR-MANDT sy-vline 
WA_EKB_KORR_STR-PAKET sy-vline 
WA_EKB_KORR_STR-BUKRS sy-vline 
WA_EKB_KORR_STR-HKONT sy-vline 
WA_EKB_KORR_STR-GSBER sy-vline 
WA_EKB_KORR_STR-ZUONR sy-vline 
WA_EKB_KORR_STR-CURTP sy-vline 
WA_EKB_KORR_STR-LPERI sy-vline 
WA_EKB_KORR_STR-LJAHR sy-vline 
WA_EKB_KORR_STR-SHKZG sy-vline 
WA_EKB_KORR_STR-VALUE sy-vline 
WA_EKB_KORR_STR-VMVAL sy-vline 
WA_EKB_KORR_STR-VJVAL sy-vline 
WA_EKB_KORR_STR-WAERS sy-vline 
WA_EKB_KORR_STR-KOART sy-vline 
WA_EKB_KORR_STR-KTOSL sy-vline 
WA_EKB_KORR_STR-REPID sy-vline 
WA_EKB_KORR_STR-BELNR sy-vline 
WA_EKB_KORR_STR-GJAHR sy-vline 
WA_EKB_KORR_STR-BUDAT sy-vline 
WA_EKB_KORR_STR-HWERT sy-vline 
WA_EKB_KORR_STR-DMBTR sy-vline 
WA_EKB_KORR_STR-MENGE sy-vline 
WA_EKB_KORR_STR-EBELN sy-vline 
WA_EKB_KORR_STR-EBELP sy-vline      INTO ld_text SEPARATED BY SPACE.

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