ABAP Select data from SAP table FKKDMEITEF into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKKDMEITEF
*  INTO TABLE @DATA(IT_FKKDMEITEF2).
*--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_FKKDMEITEF INDEX 1 INTO DATA(WA_FKKDMEITEF2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKKDMEITEF>-TAG00 = 1.
<FKKDMEITEF>-TAG01 = 1.
<FKKDMEITEF>-TAG02 = 1.
<FKKDMEITEF>-TAG03 = 1.
<FKKDMEITEF>-TAG04 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKKDMEITEF-TAG05, sy-vline,
  WA_FKKDMEITEF-TAG06, sy-vline,
  WA_FKKDMEITEF-TAG07, sy-vline,
  WA_FKKDMEITEF-TAG08, sy-vline,
  WA_FKKDMEITEF-TAG09, sy-vline,
  WA_FKKDMEITEF-TAG10, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKKDMEITEF 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_FKKDMEITEF 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_FKKDMEITEF INTO WA_FKKDMEITEF.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_FKKDMEITEF_STR, 
TAG00 TYPE STRING,
TAG01 TYPE STRING,
TAG02 TYPE STRING,
TAG03 TYPE STRING,
TAG04 TYPE STRING,
TAG05 TYPE STRING,
TAG06 TYPE STRING,
TAG07 TYPE STRING,
TAG08 TYPE STRING,
TAG09 TYPE STRING,
TAG10 TYPE STRING,
TAG11 TYPE STRING,
TAG12 TYPE STRING,
TAG13 TYPE STRING,
TAG14 TYPE STRING,
TAG15 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKKDMEITEF_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_FKKDMEITEF_STR-TAG00 sy-vline 
WA_FKKDMEITEF_STR-TAG01 sy-vline 
WA_FKKDMEITEF_STR-TAG02 sy-vline 
WA_FKKDMEITEF_STR-TAG03 sy-vline 
WA_FKKDMEITEF_STR-TAG04 sy-vline 
WA_FKKDMEITEF_STR-TAG05 sy-vline 
WA_FKKDMEITEF_STR-TAG06 sy-vline 
WA_FKKDMEITEF_STR-TAG07 sy-vline 
WA_FKKDMEITEF_STR-TAG08 sy-vline 
WA_FKKDMEITEF_STR-TAG09 sy-vline 
WA_FKKDMEITEF_STR-TAG10 sy-vline 
WA_FKKDMEITEF_STR-TAG11 sy-vline 
WA_FKKDMEITEF_STR-TAG12 sy-vline 
WA_FKKDMEITEF_STR-TAG13 sy-vline 
WA_FKKDMEITEF_STR-TAG14 sy-vline 
WA_FKKDMEITEF_STR-TAG15 sy-vline      INTO ld_text SEPARATED BY SPACE.

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