ABAP Select data from SAP table BFKKOPKC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BFKKOPKC
*  INTO TABLE @DATA(IT_BFKKOPKC2).
*--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_BFKKOPKC INDEX 1 INTO DATA(WA_BFKKOPKC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BFKKOPKC>-STYPE = 1.
<BFKKOPKC>-TBNAM = 1.
<BFKKOPKC>-BTCID = 1.
<BFKKOPKC>-CCINS = 1.
<BFKKOPKC>-CCNUM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BFKKOPKC-CCFOL, sy-vline,
  WA_BFKKOPKC-DATAB, sy-vline,
  WA_BFKKOPKC-DATBI, sy-vline,
  WA_BFKKOPKC-CCNAME, sy-vline,
  WA_BFKKOPKC-AUNUM, sy-vline,
  WA_BFKKOPKC-AUTRA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BFKKOPKC 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_BFKKOPKC 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_BFKKOPKC INTO WA_BFKKOPKC.


*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_BFKKOPKC-OPBEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BFKKOPKC-OPBEL.
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_BFKKOPKC_STR, 
STYPE TYPE STRING,
TBNAM TYPE STRING,
BTCID TYPE STRING,
CCINS TYPE STRING,
CCNUM TYPE STRING,
CCFOL TYPE STRING,
DATAB TYPE STRING,
DATBI TYPE STRING,
CCNAME TYPE STRING,
AUNUM TYPE STRING,
AUTRA TYPE STRING,
AUDAT TYPE STRING,
AUTIM TYPE STRING,
AUART TYPE STRING,
AUTWR TYPE STRING,
CCWAE TYPE STRING,
MERCH TYPE STRING,
EXPDT TYPE STRING,
EXPTM TYPE STRING,
EXTMP TYPE STRING,
AUTMP TYPE STRING,
AUCID TYPE STRING,
AVREF TYPE STRING,
DP_AUTH_REL_ID TYPE STRING,
DP_FRAUD_RISK TYPE STRING,
ANZRATE TYPE STRING,
BUDAT TYPE STRING,
BETRW_CHAR TYPE STRING,
WAERS TYPE STRING,
OPBEL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BFKKOPKC_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_BFKKOPKC_STR-STYPE sy-vline 
WA_BFKKOPKC_STR-TBNAM sy-vline 
WA_BFKKOPKC_STR-BTCID sy-vline 
WA_BFKKOPKC_STR-CCINS sy-vline 
WA_BFKKOPKC_STR-CCNUM sy-vline 
WA_BFKKOPKC_STR-CCFOL sy-vline 
WA_BFKKOPKC_STR-DATAB sy-vline 
WA_BFKKOPKC_STR-DATBI sy-vline 
WA_BFKKOPKC_STR-CCNAME sy-vline 
WA_BFKKOPKC_STR-AUNUM sy-vline 
WA_BFKKOPKC_STR-AUTRA sy-vline 
WA_BFKKOPKC_STR-AUDAT sy-vline 
WA_BFKKOPKC_STR-AUTIM sy-vline 
WA_BFKKOPKC_STR-AUART sy-vline 
WA_BFKKOPKC_STR-AUTWR sy-vline 
WA_BFKKOPKC_STR-CCWAE sy-vline 
WA_BFKKOPKC_STR-MERCH sy-vline 
WA_BFKKOPKC_STR-EXPDT sy-vline 
WA_BFKKOPKC_STR-EXPTM sy-vline 
WA_BFKKOPKC_STR-EXTMP sy-vline 
WA_BFKKOPKC_STR-AUTMP sy-vline 
WA_BFKKOPKC_STR-AUCID sy-vline 
WA_BFKKOPKC_STR-AVREF sy-vline 
WA_BFKKOPKC_STR-DP_AUTH_REL_ID sy-vline 
WA_BFKKOPKC_STR-DP_FRAUD_RISK sy-vline 
WA_BFKKOPKC_STR-ANZRATE sy-vline 
WA_BFKKOPKC_STR-BUDAT sy-vline 
WA_BFKKOPKC_STR-BETRW_CHAR sy-vline 
WA_BFKKOPKC_STR-WAERS sy-vline 
WA_BFKKOPKC_STR-OPBEL sy-vline      INTO ld_text SEPARATED BY SPACE.

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