ABAP Select data from SAP table FKKCBC_TFK_DISCO_CTRL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKKCBC_TFK_DISCO_CTRL
*  INTO TABLE @DATA(IT_FKKCBC_TFK_DISCO_CTRL2).
*--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_FKKCBC_TFK_DISCO_CTRL INDEX 1 INTO DATA(WA_FKKCBC_TFK_DISCO_CTRL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKKCBC_TFK_DISCO_CTRL>-BUKRS = 1.
<FKKCBC_TFK_DISCO_CTRL>-DIVISION = 1.
<FKKCBC_TFK_DISCO_CTRL>-DSCTY = 1.
<FKKCBC_TFK_DISCO_CTRL>-XACTIVE = 1.
<FKKCBC_TFK_DISCO_CTRL>-LIMMOS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKKCBC_TFK_DISCO_CTRL-DISCMINOAMT, sy-vline,
  WA_FKKCBC_TFK_DISCO_CTRL-RECMAXOAMT, sy-vline,
  WA_FKKCBC_TFK_DISCO_CTRL-RECMAXOPRCT, sy-vline,
  WA_FKKCBC_TFK_DISCO_CTRL-CURR, sy-vline,
  WA_FKKCBC_TFK_DISCO_CTRL-NRRANGENR, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_FKKCBC_TFK_DISCO_CTRL 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_FKKCBC_TFK_DISCO_CTRL 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_FKKCBC_TFK_DISCO_CTRL INTO WA_FKKCBC_TFK_DISCO_CTRL.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_FKKCBC_TFK_DISCO_CTRL_STR, 
BUKRS TYPE STRING,
DIVISION TYPE STRING,
DSCTY TYPE STRING,
XACTIVE TYPE STRING,
LIMMOS TYPE STRING,
DISCMINOAMT TYPE STRING,
RECMAXOAMT TYPE STRING,
RECMAXOPRCT TYPE STRING,
CURR TYPE STRING,
NRRANGENR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKKCBC_TFK_DISCO_CTRL_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_FKKCBC_TFK_DISCO_CTRL_STR-BUKRS sy-vline 
WA_FKKCBC_TFK_DISCO_CTRL_STR-DIVISION sy-vline 
WA_FKKCBC_TFK_DISCO_CTRL_STR-DSCTY sy-vline 
WA_FKKCBC_TFK_DISCO_CTRL_STR-XACTIVE sy-vline 
WA_FKKCBC_TFK_DISCO_CTRL_STR-LIMMOS sy-vline 
WA_FKKCBC_TFK_DISCO_CTRL_STR-DISCMINOAMT sy-vline 
WA_FKKCBC_TFK_DISCO_CTRL_STR-RECMAXOAMT sy-vline 
WA_FKKCBC_TFK_DISCO_CTRL_STR-RECMAXOPRCT sy-vline 
WA_FKKCBC_TFK_DISCO_CTRL_STR-CURR sy-vline 
WA_FKKCBC_TFK_DISCO_CTRL_STR-NRRANGENR sy-vline      INTO ld_text SEPARATED BY SPACE.

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