ABAP Select data from SAP table CKI_PROCESS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CKI_PROCESS
*  INTO TABLE @DATA(IT_CKI_PROCESS2).
*--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_CKI_PROCESS INDEX 1 INTO DATA(WA_CKI_PROCESS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CKI_PROCESS>-PROCESS = 1.
<CKI_PROCESS>-WERKS = 1.
<CKI_PROCESS>-SUMLO = 1.
<CKI_PROCESS>-VERID = 1.
<CKI_PROCESS>-STLAN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CKI_PROCESS-STALT, sy-vline,
  WA_CKI_PROCESS-DISST, sy-vline,
  WA_CKI_PROCESS-AUSSS, sy-vline,
  WA_CKI_PROCESS-KOSGR, sy-vline,
  WA_CKI_PROCESS-PRCTR, sy-vline,
  WA_CKI_PROCESS-MTART, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CKI_PROCESS 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_CKI_PROCESS 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_CKI_PROCESS INTO WA_CKI_PROCESS.


*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 PROCESS
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_CKI_PROCESS-PROCESS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKI_PROCESS-PROCESS.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CKI_PROCESS-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKI_PROCESS-MEINS.
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_CKI_PROCESS_STR, 
PROCESS TYPE STRING,
WERKS TYPE STRING,
SUMLO TYPE STRING,
VERID TYPE STRING,
STLAN TYPE STRING,
STALT TYPE STRING,
DISST TYPE STRING,
AUSSS TYPE STRING,
KOSGR TYPE STRING,
PRCTR TYPE STRING,
MTART TYPE STRING,
MEINS TYPE STRING,
S_PROC_MTART TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CKI_PROCESS_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_CKI_PROCESS_STR-PROCESS sy-vline 
WA_CKI_PROCESS_STR-WERKS sy-vline 
WA_CKI_PROCESS_STR-SUMLO sy-vline 
WA_CKI_PROCESS_STR-VERID sy-vline 
WA_CKI_PROCESS_STR-STLAN sy-vline 
WA_CKI_PROCESS_STR-STALT sy-vline 
WA_CKI_PROCESS_STR-DISST sy-vline 
WA_CKI_PROCESS_STR-AUSSS sy-vline 
WA_CKI_PROCESS_STR-KOSGR sy-vline 
WA_CKI_PROCESS_STR-PRCTR sy-vline 
WA_CKI_PROCESS_STR-MTART sy-vline 
WA_CKI_PROCESS_STR-MEINS sy-vline 
WA_CKI_PROCESS_STR-S_PROC_MTART sy-vline      INTO ld_text SEPARATED BY SPACE.

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