ABAP Select data from SAP table FKKEXC_RTP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKKEXC_RTP
*  INTO TABLE @DATA(IT_FKKEXC_RTP2).
*--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_FKKEXC_RTP INDEX 1 INTO DATA(WA_FKKEXC_RTP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKKEXC_RTP>-RTPTP = 1.
<FKKEXC_RTP>-PYORD = 1.
<FKKEXC_RTP>-STRTP = 1.
<FKKEXC_RTP>-BKVID = 1.
<FKKEXC_RTP>-VACID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKKEXC_RTP-KEYR1, sy-vline,
  WA_FKKEXC_RTP-RCODE, sy-vline,
  WA_FKKEXC_RTP-RLGRD, sy-vline,
  WA_FKKEXC_RTP-RLHBK, sy-vline,
  WA_FKKEXC_RTP-AENAM, sy-vline,
  WA_FKKEXC_RTP-AEDAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKKEXC_RTP 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_FKKEXC_RTP 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_FKKEXC_RTP INTO WA_FKKEXC_RTP.


*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 PYORD
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKKEXC_RTP-PYORD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKEXC_RTP-PYORD.
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_FKKEXC_RTP_STR, 
RTPTP TYPE STRING,
PYORD TYPE STRING,
STRTP TYPE STRING,
BKVID TYPE STRING,
VACID TYPE STRING,
KEYR1 TYPE STRING,
RCODE TYPE STRING,
RLGRD TYPE STRING,
RLHBK TYPE STRING,
AENAM TYPE STRING,
AEDAT TYPE STRING,
AETIM TYPE STRING,
PYMET TYPE STRING,
PYVAR TYPE STRING,
RCAVR TYPE STRING,
RCAVA TYPE STRING,
RCAVZ TYPE STRING,
RCRSP TYPE STRING,
RTEXT TYPE STRING,
RCCVV TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKKEXC_RTP_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_FKKEXC_RTP_STR-RTPTP sy-vline 
WA_FKKEXC_RTP_STR-PYORD sy-vline 
WA_FKKEXC_RTP_STR-STRTP sy-vline 
WA_FKKEXC_RTP_STR-BKVID sy-vline 
WA_FKKEXC_RTP_STR-VACID sy-vline 
WA_FKKEXC_RTP_STR-KEYR1 sy-vline 
WA_FKKEXC_RTP_STR-RCODE sy-vline 
WA_FKKEXC_RTP_STR-RLGRD sy-vline 
WA_FKKEXC_RTP_STR-RLHBK sy-vline 
WA_FKKEXC_RTP_STR-AENAM sy-vline 
WA_FKKEXC_RTP_STR-AEDAT sy-vline 
WA_FKKEXC_RTP_STR-AETIM sy-vline 
WA_FKKEXC_RTP_STR-PYMET sy-vline 
WA_FKKEXC_RTP_STR-PYVAR sy-vline 
WA_FKKEXC_RTP_STR-RCAVR sy-vline 
WA_FKKEXC_RTP_STR-RCAVA sy-vline 
WA_FKKEXC_RTP_STR-RCAVZ sy-vline 
WA_FKKEXC_RTP_STR-RCRSP sy-vline 
WA_FKKEXC_RTP_STR-RTEXT sy-vline 
WA_FKKEXC_RTP_STR-RCCVV sy-vline      INTO ld_text SEPARATED BY SPACE.

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