ABAP Select data from SAP table FKKRLCLD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKKRLCLD
*  INTO TABLE @DATA(IT_FKKRLCLD2).
*--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_FKKRLCLD INDEX 1 INTO DATA(WA_FKKRLCLD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKKRLCLD>-KEYR1 = 1.
<FKKRLCLD>-POSRA = 1.
<FKKRLCLD>-BETRR = 1.
<FKKRLCLD>-BETRH = 1.
<FKKRLCLD>-BETRU = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKKRLCLD-WAERS, sy-vline,
  WA_FKKRLCLD-WAERU, sy-vline,
  WA_FKKRLCLD-BANKL, sy-vline,
  WA_FKKRLCLD-BANKK, sy-vline,
  WA_FKKRLCLD-BANKN, sy-vline,
  WA_FKKRLCLD-BUKRS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKKRLCLD 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_FKKRLCLD 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_FKKRLCLD INTO WA_FKKRLCLD.


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

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

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

*Conversion exit ALPHA, internal->external for field KLAEH
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKKRLCLD-KLAEH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKRLCLD-KLAEH.
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_FKKRLCLD_STR, 
KEYR1 TYPE STRING,
POSRA TYPE STRING,
BETRR TYPE STRING,
BETRH TYPE STRING,
BETRU TYPE STRING,
WAERS TYPE STRING,
WAERU TYPE STRING,
BANKL TYPE STRING,
BANKK TYPE STRING,
BANKN TYPE STRING,
BUKRS TYPE STRING,
GSBER TYPE STRING,
BUDAT TYPE STRING,
OPBEL TYPE STRING,
RLBEL TYPE STRING,
KLAEB TYPE STRING,
KLAEH TYPE STRING,
KLAED TYPE STRING,
IBAN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKKRLCLD_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_FKKRLCLD_STR-KEYR1 sy-vline 
WA_FKKRLCLD_STR-POSRA sy-vline 
WA_FKKRLCLD_STR-BETRR sy-vline 
WA_FKKRLCLD_STR-BETRH sy-vline 
WA_FKKRLCLD_STR-BETRU sy-vline 
WA_FKKRLCLD_STR-WAERS sy-vline 
WA_FKKRLCLD_STR-WAERU sy-vline 
WA_FKKRLCLD_STR-BANKL sy-vline 
WA_FKKRLCLD_STR-BANKK sy-vline 
WA_FKKRLCLD_STR-BANKN sy-vline 
WA_FKKRLCLD_STR-BUKRS sy-vline 
WA_FKKRLCLD_STR-GSBER sy-vline 
WA_FKKRLCLD_STR-BUDAT sy-vline 
WA_FKKRLCLD_STR-OPBEL sy-vline 
WA_FKKRLCLD_STR-RLBEL sy-vline 
WA_FKKRLCLD_STR-KLAEB sy-vline 
WA_FKKRLCLD_STR-KLAEH sy-vline 
WA_FKKRLCLD_STR-KLAED sy-vline 
WA_FKKRLCLD_STR-IBAN sy-vline      INTO ld_text SEPARATED BY SPACE.

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