ABAP Select data from SAP table CKKEKOINFO into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CKKEKOINFO
*  INTO TABLE @DATA(IT_CKKEKOINFO2).
*--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_CKKEKOINFO INDEX 1 INTO DATA(WA_CKKEKOINFO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CKKEKOINFO>-BZOBJ = 1.
<CKKEKOINFO>-KALNR = 1.
<CKKEKOINFO>-KALKA = 1.
<CKKEKOINFO>-KADKY = 1.
<CKKEKOINFO>-TVERS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CKKEKOINFO-BWVAR, sy-vline,
  WA_CKKEKOINFO-KKZMA, sy-vline,
  WA_CKKEKOINFO-MATNR, sy-vline,
  WA_CKKEKOINFO-WERKS, sy-vline,
  WA_CKKEKOINFO-KADAT, sy-vline,
  WA_CKKEKOINFO-KLVAR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CKKEKOINFO 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_CKKEKOINFO 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_CKKEKOINFO INTO WA_CKKEKOINFO.


*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_CKKEKOINFO-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKKEKOINFO-MATNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ABPSP, internal->external for field PSPNR
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_CKKEKOINFO-PSPNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKKEKOINFO-PSPNR.
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_CKKEKOINFO_STR, 
BZOBJ TYPE STRING,
KALNR TYPE STRING,
KALKA TYPE STRING,
KADKY TYPE STRING,
TVERS TYPE STRING,
BWVAR TYPE STRING,
KKZMA TYPE STRING,
MATNR TYPE STRING,
WERKS TYPE STRING,
KADAT TYPE STRING,
KLVAR TYPE STRING,
KALSM TYPE STRING,
TEMPLATE TYPE STRING,
KOKRS TYPE STRING,
VBELN TYPE STRING,
POSNR TYPE STRING,
PSPNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CKKEKOINFO_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_CKKEKOINFO_STR-BZOBJ sy-vline 
WA_CKKEKOINFO_STR-KALNR sy-vline 
WA_CKKEKOINFO_STR-KALKA sy-vline 
WA_CKKEKOINFO_STR-KADKY sy-vline 
WA_CKKEKOINFO_STR-TVERS sy-vline 
WA_CKKEKOINFO_STR-BWVAR sy-vline 
WA_CKKEKOINFO_STR-KKZMA sy-vline 
WA_CKKEKOINFO_STR-MATNR sy-vline 
WA_CKKEKOINFO_STR-WERKS sy-vline 
WA_CKKEKOINFO_STR-KADAT sy-vline 
WA_CKKEKOINFO_STR-KLVAR sy-vline 
WA_CKKEKOINFO_STR-KALSM sy-vline 
WA_CKKEKOINFO_STR-TEMPLATE sy-vline 
WA_CKKEKOINFO_STR-KOKRS sy-vline 
WA_CKKEKOINFO_STR-VBELN sy-vline 
WA_CKKEKOINFO_STR-POSNR sy-vline 
WA_CKKEKOINFO_STR-PSPNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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