ABAP Select data from SAP table FKKCOLLDISPLAY into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKKCOLLDISPLAY
*  INTO TABLE @DATA(IT_FKKCOLLDISPLAY2).
*--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_FKKCOLLDISPLAY INDEX 1 INTO DATA(WA_FKKCOLLDISPLAY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKKCOLLDISPLAY>-STATUS = 1.
<FKKCOLLDISPLAY>-RQS_DRS = 1.
<FKKCOLLDISPLAY>-GPART = 1.
<FKKCOLLDISPLAY>-VKONT = 1.
<FKKCOLLDISPLAY>-OPBEL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKKCOLLDISPLAY-INKGP, sy-vline,
  WA_FKKCOLLDISPLAY-INKPS, sy-vline,
  WA_FKKCOLLDISPLAY-AGSTA, sy-vline,
  WA_FKKCOLLDISPLAY-AGGRD, sy-vline,
  WA_FKKCOLLDISPLAY-BETRW, sy-vline,
  WA_FKKCOLLDISPLAY-WAERS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKKCOLLDISPLAY 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_FKKCOLLDISPLAY 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_FKKCOLLDISPLAY INTO WA_FKKCOLLDISPLAY.


*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 GPART
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKKCOLLDISPLAY-GPART
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKCOLLDISPLAY-GPART.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VKONT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKKCOLLDISPLAY-VKONT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKCOLLDISPLAY-VKONT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field OPBEL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKKCOLLDISPLAY-OPBEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKCOLLDISPLAY-OPBEL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field INKGP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKKCOLLDISPLAY-INKGP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKCOLLDISPLAY-INKGP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field XBLNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKKCOLLDISPLAY-XBLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKCOLLDISPLAY-XBLNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VTREF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKKCOLLDISPLAY-VTREF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKCOLLDISPLAY-VTREF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DRS_SCORE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKKCOLLDISPLAY-DRS_SCORE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKCOLLDISPLAY-DRS_SCORE.
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_FKKCOLLDISPLAY_STR, 
STATUS TYPE STRING,
RQS_DRS TYPE STRING,
GPART TYPE STRING,
VKONT TYPE STRING,
OPBEL TYPE STRING,
INKGP TYPE STRING,
INKPS TYPE STRING,
AGSTA TYPE STRING,
AGGRD TYPE STRING,
BETRW TYPE STRING,
WAERS TYPE STRING,
FAEDN TYPE STRING,
OPUPW TYPE STRING,
OPUPK TYPE STRING,
OPUPZ TYPE STRING,
STAKZ TYPE STRING,
BUDAT TYPE STRING,
BLDAT TYPE STRING,
XBLNR TYPE STRING,
AUGRD TYPE STRING,
BUKRS TYPE STRING,
VTREF TYPE STRING,
DRS_SCORE TYPE STRING,
DRS_REQDATE TYPE STRING,
DRS_RSPDATE TYPE STRING,
APPLK TYPE STRING,
SUBAP TYPE STRING,
GSBER TYPE STRING,
SEGMENT TYPE STRING,
LDGRP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKKCOLLDISPLAY_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_FKKCOLLDISPLAY_STR-STATUS sy-vline 
WA_FKKCOLLDISPLAY_STR-RQS_DRS sy-vline 
WA_FKKCOLLDISPLAY_STR-GPART sy-vline 
WA_FKKCOLLDISPLAY_STR-VKONT sy-vline 
WA_FKKCOLLDISPLAY_STR-OPBEL sy-vline 
WA_FKKCOLLDISPLAY_STR-INKGP sy-vline 
WA_FKKCOLLDISPLAY_STR-INKPS sy-vline 
WA_FKKCOLLDISPLAY_STR-AGSTA sy-vline 
WA_FKKCOLLDISPLAY_STR-AGGRD sy-vline 
WA_FKKCOLLDISPLAY_STR-BETRW sy-vline 
WA_FKKCOLLDISPLAY_STR-WAERS sy-vline 
WA_FKKCOLLDISPLAY_STR-FAEDN sy-vline 
WA_FKKCOLLDISPLAY_STR-OPUPW sy-vline 
WA_FKKCOLLDISPLAY_STR-OPUPK sy-vline 
WA_FKKCOLLDISPLAY_STR-OPUPZ sy-vline 
WA_FKKCOLLDISPLAY_STR-STAKZ sy-vline 
WA_FKKCOLLDISPLAY_STR-BUDAT sy-vline 
WA_FKKCOLLDISPLAY_STR-BLDAT sy-vline 
WA_FKKCOLLDISPLAY_STR-XBLNR sy-vline 
WA_FKKCOLLDISPLAY_STR-AUGRD sy-vline 
WA_FKKCOLLDISPLAY_STR-BUKRS sy-vline 
WA_FKKCOLLDISPLAY_STR-VTREF sy-vline 
WA_FKKCOLLDISPLAY_STR-DRS_SCORE sy-vline 
WA_FKKCOLLDISPLAY_STR-DRS_REQDATE sy-vline 
WA_FKKCOLLDISPLAY_STR-DRS_RSPDATE sy-vline 
WA_FKKCOLLDISPLAY_STR-APPLK sy-vline 
WA_FKKCOLLDISPLAY_STR-SUBAP sy-vline 
WA_FKKCOLLDISPLAY_STR-GSBER sy-vline 
WA_FKKCOLLDISPLAY_STR-SEGMENT sy-vline 
WA_FKKCOLLDISPLAY_STR-LDGRP sy-vline      INTO ld_text SEPARATED BY SPACE.

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