ABAP Select data from SAP table FKKCMKADM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKKCMKADM
*  INTO TABLE @DATA(IT_FKKCMKADM2).
*--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_FKKCMKADM INDEX 1 INTO DATA(WA_FKKCMKADM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKKCMKADM>-STASS = 1.
<FKKCMKADM>-ANZPO = 1.
<FKKCMKADM>-SUMMH = 1.
<FKKCMKADM>-ERNAM = 1.
<FKKCMKADM>-ERDAT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKKCMKADM-ERTIM, sy-vline,
  WA_FKKCMKADM-AENAM, sy-vline,
  WA_FKKCMKADM-AEDAT, sy-vline,
  WA_FKKCMKADM-AETIM, sy-vline,
  WA_FKKCMKADM-CHKFR, sy-vline,
  WA_FKKCMKADM-CHKTO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKKCMKADM 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_FKKCMKADM 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_FKKCMKADM INTO WA_FKKCMKADM.


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

*Conversion exit ALPHA, internal->external for field CHKTO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKKCMKADM-CHKTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKCMKADM-CHKTO.
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_FKKCMKADM_STR, 
STASS TYPE STRING,
ANZPO TYPE STRING,
SUMMH TYPE STRING,
ERNAM TYPE STRING,
ERDAT TYPE STRING,
ERTIM TYPE STRING,
AENAM TYPE STRING,
AEDAT TYPE STRING,
AETIM TYPE STRING,
CHKFR TYPE STRING,
CHKTO TYPE STRING,
INFOF TYPE STRING,
KTSUH TYPE STRING,
KSUMP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKKCMKADM_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_FKKCMKADM_STR-STASS sy-vline 
WA_FKKCMKADM_STR-ANZPO sy-vline 
WA_FKKCMKADM_STR-SUMMH sy-vline 
WA_FKKCMKADM_STR-ERNAM sy-vline 
WA_FKKCMKADM_STR-ERDAT sy-vline 
WA_FKKCMKADM_STR-ERTIM sy-vline 
WA_FKKCMKADM_STR-AENAM sy-vline 
WA_FKKCMKADM_STR-AEDAT sy-vline 
WA_FKKCMKADM_STR-AETIM sy-vline 
WA_FKKCMKADM_STR-CHKFR sy-vline 
WA_FKKCMKADM_STR-CHKTO sy-vline 
WA_FKKCMKADM_STR-INFOF sy-vline 
WA_FKKCMKADM_STR-KTSUH sy-vline 
WA_FKKCMKADM_STR-KSUMP sy-vline      INTO ld_text SEPARATED BY SPACE.

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