ABAP Select data from SAP table FKKOPKCA_SCRN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKKOPKCA_SCRN
*  INTO TABLE @DATA(IT_FKKOPKCA_SCRN2).
*--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_FKKOPKCA_SCRN INDEX 1 INTO DATA(WA_FKKOPKCA_SCRN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKKOPKCA_SCRN>-MANDT = 1.
<FKKOPKCA_SCRN>-OPBEL = 1.
<FKKOPKCA_SCRN>-OPUPK = 1.
<FKKOPKCA_SCRN>-LAUFD_RSP = 1.
<FKKOPKCA_SCRN>-LAUFI_RSP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKKOPKCA_SCRN-ERNAM_ANS, sy-vline,
  WA_FKKOPKCA_SCRN-ERDAT_ANS, sy-vline,
  WA_FKKOPKCA_SCRN-ERTIM_ANS, sy-vline,
  WA_FKKOPKCA_SCRN-TMSTP_ANS, sy-vline,
  WA_FKKOPKCA_SCRN-KPRST, sy-vline,
  WA_FKKOPKCA_SCRN-ERROR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKKOPKCA_SCRN 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_FKKOPKCA_SCRN 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_FKKOPKCA_SCRN INTO WA_FKKOPKCA_SCRN.


*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_FKKOPKCA_SCRN-OPBEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKOPKCA_SCRN-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_FKKOPKCA_SCRN_STR, 
MANDT TYPE STRING,
OPBEL TYPE STRING,
OPUPK TYPE STRING,
LAUFD_RSP TYPE STRING,
LAUFI_RSP TYPE STRING,
ERNAM_ANS TYPE STRING,
ERDAT_ANS TYPE STRING,
ERTIM_ANS TYPE STRING,
TMSTP_ANS TYPE STRING,
KPRST TYPE STRING,
ERROR TYPE STRING,
TX100 TYPE STRING,
DUPLICATE TYPE STRING,
FINAL_ERROR TYPE STRING,
CS_RLGRD TYPE STRING,
CS_CCFAM TYPE STRING,
CS_SRQID TYPE STRING,
CS_SETAM TYPE STRING,
CS_SETCU TYPE STRING,
CS_AVREF TYPE STRING,
CS_MWSKZ TYPE STRING,
CS_TAXAM TYPE STRING,
CS_CCFAM_NET TYPE STRING,
CCINS TYPE STRING,
CCNUM TYPE STRING,
BUKRS TYPE STRING,
BETRW TYPE STRING,
WAERS TYPE STRING,
PAYS_PROV TYPE STRING,
PAYS_TRAN TYPE STRING,
ORIG_PAYS_TRAN TYPE STRING,
ORIG_CREDIT TYPE STRING,
AUNUM TYPE STRING,
AUTRA TYPE STRING,
SRQID TYPE STRING,
AUCID TYPE STRING,
AVREF TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKKOPKCA_SCRN_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_FKKOPKCA_SCRN_STR-MANDT sy-vline 
WA_FKKOPKCA_SCRN_STR-OPBEL sy-vline 
WA_FKKOPKCA_SCRN_STR-OPUPK sy-vline 
WA_FKKOPKCA_SCRN_STR-LAUFD_RSP sy-vline 
WA_FKKOPKCA_SCRN_STR-LAUFI_RSP sy-vline 
WA_FKKOPKCA_SCRN_STR-ERNAM_ANS sy-vline 
WA_FKKOPKCA_SCRN_STR-ERDAT_ANS sy-vline 
WA_FKKOPKCA_SCRN_STR-ERTIM_ANS sy-vline 
WA_FKKOPKCA_SCRN_STR-TMSTP_ANS sy-vline 
WA_FKKOPKCA_SCRN_STR-KPRST sy-vline 
WA_FKKOPKCA_SCRN_STR-ERROR sy-vline 
WA_FKKOPKCA_SCRN_STR-TX100 sy-vline 
WA_FKKOPKCA_SCRN_STR-DUPLICATE sy-vline 
WA_FKKOPKCA_SCRN_STR-FINAL_ERROR sy-vline 
WA_FKKOPKCA_SCRN_STR-CS_RLGRD sy-vline 
WA_FKKOPKCA_SCRN_STR-CS_CCFAM sy-vline 
WA_FKKOPKCA_SCRN_STR-CS_SRQID sy-vline 
WA_FKKOPKCA_SCRN_STR-CS_SETAM sy-vline 
WA_FKKOPKCA_SCRN_STR-CS_SETCU sy-vline 
WA_FKKOPKCA_SCRN_STR-CS_AVREF sy-vline 
WA_FKKOPKCA_SCRN_STR-CS_MWSKZ sy-vline 
WA_FKKOPKCA_SCRN_STR-CS_TAXAM sy-vline 
WA_FKKOPKCA_SCRN_STR-CS_CCFAM_NET sy-vline 
WA_FKKOPKCA_SCRN_STR-CCINS sy-vline 
WA_FKKOPKCA_SCRN_STR-CCNUM sy-vline 
WA_FKKOPKCA_SCRN_STR-BUKRS sy-vline 
WA_FKKOPKCA_SCRN_STR-BETRW sy-vline 
WA_FKKOPKCA_SCRN_STR-WAERS sy-vline 
WA_FKKOPKCA_SCRN_STR-PAYS_PROV sy-vline 
WA_FKKOPKCA_SCRN_STR-PAYS_TRAN sy-vline 
WA_FKKOPKCA_SCRN_STR-ORIG_PAYS_TRAN sy-vline 
WA_FKKOPKCA_SCRN_STR-ORIG_CREDIT sy-vline 
WA_FKKOPKCA_SCRN_STR-AUNUM sy-vline 
WA_FKKOPKCA_SCRN_STR-AUTRA sy-vline 
WA_FKKOPKCA_SCRN_STR-SRQID sy-vline 
WA_FKKOPKCA_SCRN_STR-AUCID sy-vline 
WA_FKKOPKCA_SCRN_STR-AVREF sy-vline      INTO ld_text SEPARATED BY SPACE.

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