ABAP Select data from SAP table CKPP into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CKPP
*  INTO TABLE @DATA(IT_CKPP2).
*--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_CKPP INDEX 1 INTO DATA(WA_CKPP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CKPP>-MANDT = 1.
<CKPP>-KOKRS = 1.
<CKPP>-KALNR = 1.
<CKPP>-WTTYP = 1.
<CKPP>-VERSN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CKPP-POSNR, sy-vline,
  WA_CKPP-MEEHT, sy-vline,
  WA_CKPP-PMG, sy-vline,
  WA_CKPP-PPG, sy-vline,
  WA_CKPP-PPG001, sy-vline,
  WA_CKPP-PPG002, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CKPP 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_CKPP 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_CKPP INTO WA_CKPP.


*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 CUNIT, internal->external for field MEEHT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CKPP-MEEHT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKPP-MEEHT.
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_CKPP_STR, 
MANDT TYPE STRING,
KOKRS TYPE STRING,
KALNR TYPE STRING,
WTTYP TYPE STRING,
VERSN TYPE STRING,
POSNR TYPE STRING,
MEEHT TYPE STRING,
PMG TYPE STRING,
PPG TYPE STRING,
PPG001 TYPE STRING,
PPG002 TYPE STRING,
PPG003 TYPE STRING,
PPG004 TYPE STRING,
PPG005 TYPE STRING,
PPG006 TYPE STRING,
PPG007 TYPE STRING,
PPG008 TYPE STRING,
PPG009 TYPE STRING,
PPG010 TYPE STRING,
PPG011 TYPE STRING,
PPG012 TYPE STRING,
PPG013 TYPE STRING,
PPG014 TYPE STRING,
PPG015 TYPE STRING,
PPG016 TYPE STRING,
PMG001 TYPE STRING,
PMG002 TYPE STRING,
PMG003 TYPE STRING,
PMG004 TYPE STRING,
PMG005 TYPE STRING,
PMG006 TYPE STRING,
PMG007 TYPE STRING,
PMG008 TYPE STRING,
PMG009 TYPE STRING,
PMG010 TYPE STRING,
PMG011 TYPE STRING,
PMG012 TYPE STRING,
PMG013 TYPE STRING,
PMG014 TYPE STRING,
PMG015 TYPE STRING,
PMG016 TYPE STRING,
FCPPG TYPE STRING,
FCPMG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CKPP_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_CKPP_STR-MANDT sy-vline 
WA_CKPP_STR-KOKRS sy-vline 
WA_CKPP_STR-KALNR sy-vline 
WA_CKPP_STR-WTTYP sy-vline 
WA_CKPP_STR-VERSN sy-vline 
WA_CKPP_STR-POSNR sy-vline 
WA_CKPP_STR-MEEHT sy-vline 
WA_CKPP_STR-PMG sy-vline 
WA_CKPP_STR-PPG sy-vline 
WA_CKPP_STR-PPG001 sy-vline 
WA_CKPP_STR-PPG002 sy-vline 
WA_CKPP_STR-PPG003 sy-vline 
WA_CKPP_STR-PPG004 sy-vline 
WA_CKPP_STR-PPG005 sy-vline 
WA_CKPP_STR-PPG006 sy-vline 
WA_CKPP_STR-PPG007 sy-vline 
WA_CKPP_STR-PPG008 sy-vline 
WA_CKPP_STR-PPG009 sy-vline 
WA_CKPP_STR-PPG010 sy-vline 
WA_CKPP_STR-PPG011 sy-vline 
WA_CKPP_STR-PPG012 sy-vline 
WA_CKPP_STR-PPG013 sy-vline 
WA_CKPP_STR-PPG014 sy-vline 
WA_CKPP_STR-PPG015 sy-vline 
WA_CKPP_STR-PPG016 sy-vline 
WA_CKPP_STR-PMG001 sy-vline 
WA_CKPP_STR-PMG002 sy-vline 
WA_CKPP_STR-PMG003 sy-vline 
WA_CKPP_STR-PMG004 sy-vline 
WA_CKPP_STR-PMG005 sy-vline 
WA_CKPP_STR-PMG006 sy-vline 
WA_CKPP_STR-PMG007 sy-vline 
WA_CKPP_STR-PMG008 sy-vline 
WA_CKPP_STR-PMG009 sy-vline 
WA_CKPP_STR-PMG010 sy-vline 
WA_CKPP_STR-PMG011 sy-vline 
WA_CKPP_STR-PMG012 sy-vline 
WA_CKPP_STR-PMG013 sy-vline 
WA_CKPP_STR-PMG014 sy-vline 
WA_CKPP_STR-PMG015 sy-vline 
WA_CKPP_STR-PMG016 sy-vline 
WA_CKPP_STR-FCPPG sy-vline 
WA_CKPP_STR-FCPMG sy-vline      INTO ld_text SEPARATED BY SPACE.

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