ABAP Select data from SAP table BFKKOPKC_C into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP BFKKOPKC_C 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_C. 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_C 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_C TYPE STANDARD TABLE OF BFKKOPKC_C,
      WA_BFKKOPKC_C TYPE BFKKOPKC_C,
      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_C> TYPE BFKKOPKC_C.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BFKKOPKC_C
*  INTO TABLE @DATA(IT_BFKKOPKC_C2).
*--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_C INDEX 1 INTO DATA(WA_BFKKOPKC_C2).


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

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

ENDLOOP.

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

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


*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_C-OPBEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BFKKOPKC_C-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_C_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,
ANZRATE TYPE STRING,
BUDAT TYPE STRING,
BETRW_CHAR TYPE STRING,
WAERS TYPE STRING,
OPBEL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BFKKOPKC_C_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_C_STR-STYPE sy-vline 
WA_BFKKOPKC_C_STR-TBNAM sy-vline 
WA_BFKKOPKC_C_STR-BTCID sy-vline 
WA_BFKKOPKC_C_STR-CCINS sy-vline 
WA_BFKKOPKC_C_STR-CCNUM sy-vline 
WA_BFKKOPKC_C_STR-CCFOL sy-vline 
WA_BFKKOPKC_C_STR-DATAB sy-vline 
WA_BFKKOPKC_C_STR-DATBI sy-vline 
WA_BFKKOPKC_C_STR-CCNAME sy-vline 
WA_BFKKOPKC_C_STR-AUNUM sy-vline 
WA_BFKKOPKC_C_STR-AUTRA sy-vline 
WA_BFKKOPKC_C_STR-AUDAT sy-vline 
WA_BFKKOPKC_C_STR-AUTIM sy-vline 
WA_BFKKOPKC_C_STR-AUART sy-vline 
WA_BFKKOPKC_C_STR-AUTWR sy-vline 
WA_BFKKOPKC_C_STR-CCWAE sy-vline 
WA_BFKKOPKC_C_STR-MERCH sy-vline 
WA_BFKKOPKC_C_STR-ANZRATE sy-vline 
WA_BFKKOPKC_C_STR-BUDAT sy-vline 
WA_BFKKOPKC_C_STR-BETRW_CHAR sy-vline 
WA_BFKKOPKC_C_STR-WAERS sy-vline 
WA_BFKKOPKC_C_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.