ABAP Select data from SAP table DFKKCOLLH into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DFKKCOLLH
*  INTO TABLE @DATA(IT_DFKKCOLLH2).
*--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_DFKKCOLLH INDEX 1 INTO DATA(WA_DFKKCOLLH2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DFKKCOLLH>-MANDT = 1.
<DFKKCOLLH>-OPBEL = 1.
<DFKKCOLLH>-INKPS = 1.
<DFKKCOLLH>-LFDNR = 1.
<DFKKCOLLH>-INKGP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DFKKCOLLH-BUKRS, sy-vline,
  WA_DFKKCOLLH-GPART, sy-vline,
  WA_DFKKCOLLH-VKONT, sy-vline,
  WA_DFKKCOLLH-AGDAT, sy-vline,
  WA_DFKKCOLLH-AGGRD, sy-vline,
  WA_DFKKCOLLH-WAERS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DFKKCOLLH 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_DFKKCOLLH 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_DFKKCOLLH INTO WA_DFKKCOLLH.


*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_DFKKCOLLH-OPBEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DFKKCOLLH-OPBEL.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field STORB
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DFKKCOLLH-STORB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DFKKCOLLH-STORB.
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_DFKKCOLLH_STR, 
MANDT TYPE STRING,
OPBEL TYPE STRING,
INKPS TYPE STRING,
LFDNR TYPE STRING,
INKGP TYPE STRING,
BUKRS TYPE STRING,
GPART TYPE STRING,
VKONT TYPE STRING,
AGDAT TYPE STRING,
AGGRD TYPE STRING,
WAERS TYPE STRING,
BETRW TYPE STRING,
BETRZ TYPE STRING,
NINKB TYPE STRING,
INTBT TYPE STRING,
CHARB TYPE STRING,
XBLNR TYPE STRING,
AGSTA TYPE STRING,
AGSTA_OR TYPE STRING,
XSOLD TYPE STRING,
NRZAS TYPE STRING,
RUDAT TYPE STRING,
RUGRD TYPE STRING,
AUGBL TYPE STRING,
STORB TYPE STRING,
AENAM TYPE STRING,
ACPDT TYPE STRING,
ACPTM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DFKKCOLLH_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_DFKKCOLLH_STR-MANDT sy-vline 
WA_DFKKCOLLH_STR-OPBEL sy-vline 
WA_DFKKCOLLH_STR-INKPS sy-vline 
WA_DFKKCOLLH_STR-LFDNR sy-vline 
WA_DFKKCOLLH_STR-INKGP sy-vline 
WA_DFKKCOLLH_STR-BUKRS sy-vline 
WA_DFKKCOLLH_STR-GPART sy-vline 
WA_DFKKCOLLH_STR-VKONT sy-vline 
WA_DFKKCOLLH_STR-AGDAT sy-vline 
WA_DFKKCOLLH_STR-AGGRD sy-vline 
WA_DFKKCOLLH_STR-WAERS sy-vline 
WA_DFKKCOLLH_STR-BETRW sy-vline 
WA_DFKKCOLLH_STR-BETRZ sy-vline 
WA_DFKKCOLLH_STR-NINKB sy-vline 
WA_DFKKCOLLH_STR-INTBT sy-vline 
WA_DFKKCOLLH_STR-CHARB sy-vline 
WA_DFKKCOLLH_STR-XBLNR sy-vline 
WA_DFKKCOLLH_STR-AGSTA sy-vline 
WA_DFKKCOLLH_STR-AGSTA_OR sy-vline 
WA_DFKKCOLLH_STR-XSOLD sy-vline 
WA_DFKKCOLLH_STR-NRZAS sy-vline 
WA_DFKKCOLLH_STR-RUDAT sy-vline 
WA_DFKKCOLLH_STR-RUGRD sy-vline 
WA_DFKKCOLLH_STR-AUGBL sy-vline 
WA_DFKKCOLLH_STR-STORB sy-vline 
WA_DFKKCOLLH_STR-AENAM sy-vline 
WA_DFKKCOLLH_STR-ACPDT sy-vline 
WA_DFKKCOLLH_STR-ACPTM sy-vline      INTO ld_text SEPARATED BY SPACE.

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