ABAP Select data from SAP table FKKEXTCOLL_OV into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKKEXTCOLL_OV
*  INTO TABLE @DATA(IT_FKKEXTCOLL_OV2).
*--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_FKKEXTCOLL_OV INDEX 1 INTO DATA(WA_FKKEXTCOLL_OV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKKEXTCOLL_OV>-MANDT = 1.
<FKKEXTCOLL_OV>-INKGP = 1.
<FKKEXTCOLL_OV>-OUTOPEN = 1.
<FKKEXTCOLL_OV>-NOOUT = 1.
<FKKEXTCOLL_OV>-INOPEN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKKEXTCOLL_OV-INPROC, sy-vline,
  WA_FKKEXTCOLL_OV-INERR, sy-vline,
  WA_FKKEXTCOLL_OV-OUTSENT, sy-vline,
  WA_FKKEXTCOLL_OV-ACPDT, sy-vline,
  WA_FKKEXTCOLL_OV-INDISC, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_FKKEXTCOLL_OV 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_FKKEXTCOLL_OV 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_FKKEXTCOLL_OV INTO WA_FKKEXTCOLL_OV.


*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_FKKEXTCOLL_OV_STR, 
MANDT TYPE STRING,
INKGP TYPE STRING,
OUTOPEN TYPE STRING,
NOOUT TYPE STRING,
INOPEN TYPE STRING,
INPROC TYPE STRING,
INERR TYPE STRING,
OUTSENT TYPE STRING,
ACPDT TYPE STRING,
INDISC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKKEXTCOLL_OV_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_FKKEXTCOLL_OV_STR-MANDT sy-vline 
WA_FKKEXTCOLL_OV_STR-INKGP sy-vline 
WA_FKKEXTCOLL_OV_STR-OUTOPEN sy-vline 
WA_FKKEXTCOLL_OV_STR-NOOUT sy-vline 
WA_FKKEXTCOLL_OV_STR-INOPEN sy-vline 
WA_FKKEXTCOLL_OV_STR-INPROC sy-vline 
WA_FKKEXTCOLL_OV_STR-INERR sy-vline 
WA_FKKEXTCOLL_OV_STR-OUTSENT sy-vline 
WA_FKKEXTCOLL_OV_STR-ACPDT sy-vline 
WA_FKKEXTCOLL_OV_STR-INDISC sy-vline      INTO ld_text SEPARATED BY SPACE.

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