ABAP Select data from SAP table DFKKHUREPDS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DFKKHUREPDS
*  INTO TABLE @DATA(IT_DFKKHUREPDS2).
*--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_DFKKHUREPDS INDEX 1 INTO DATA(WA_DFKKHUREPDS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DFKKHUREPDS>-MANDT = 1.
<DFKKHUREPDS>-BUKRS = 1.
<DFKKHUREPDS>-DATTYP = 1.
<DFKKHUREPDS>-DATUM = 1.
<DFKKHUREPDS>-GPART = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DFKKHUREPDS-OPBEL, sy-vline,
  WA_DFKKHUREPDS-LFDNR, sy-vline,
  WA_DFKKHUREPDS-MWSKZ, sy-vline,
  WA_DFKKHUREPDS-MWART, sy-vline,
  WA_DFKKHUREPDS-HWAER, sy-vline,
  WA_DFKKHUREPDS-WAERS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DFKKHUREPDS 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_DFKKHUREPDS 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_DFKKHUREPDS INTO WA_DFKKHUREPDS.


*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_DFKKHUREPDS-GPART
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DFKKHUREPDS-GPART.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit ALPHA, internal->external for field STBEL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DFKKHUREPDS-STBEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DFKKHUREPDS-STBEL.
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_DFKKHUREPDS_STR, 
MANDT TYPE STRING,
BUKRS TYPE STRING,
DATTYP TYPE STRING,
DATUM TYPE STRING,
GPART TYPE STRING,
OPBEL TYPE STRING,
LFDNR TYPE STRING,
MWSKZ TYPE STRING,
MWART TYPE STRING,
HWAER TYPE STRING,
WAERS TYPE STRING,
LWAER TYPE STRING,
HWBAS TYPE STRING,
SBASW TYPE STRING,
LWBAS TYPE STRING,
SBETH TYPE STRING,
SBETW TYPE STRING,
SBETL TYPE STRING,
XBLNR TYPE STRING,
XBLNR_ORG TYPE STRING,
BUDAT TYPE STRING,
BLDAT TYPE STRING,
FAEDN TYPE STRING,
VATDATE TYPE STRING,
STBEL TYPE STRING,
STCEG TYPE STRING,
TAXTYPE TYPE STRING,
NAME1 TYPE STRING,
FIKEY TYPE STRING,
CPUDT TYPE STRING,
INV_ISSDAT TYPE STRING,
LIMIT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DFKKHUREPDS_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_DFKKHUREPDS_STR-MANDT sy-vline 
WA_DFKKHUREPDS_STR-BUKRS sy-vline 
WA_DFKKHUREPDS_STR-DATTYP sy-vline 
WA_DFKKHUREPDS_STR-DATUM sy-vline 
WA_DFKKHUREPDS_STR-GPART sy-vline 
WA_DFKKHUREPDS_STR-OPBEL sy-vline 
WA_DFKKHUREPDS_STR-LFDNR sy-vline 
WA_DFKKHUREPDS_STR-MWSKZ sy-vline 
WA_DFKKHUREPDS_STR-MWART sy-vline 
WA_DFKKHUREPDS_STR-HWAER sy-vline 
WA_DFKKHUREPDS_STR-WAERS sy-vline 
WA_DFKKHUREPDS_STR-LWAER sy-vline 
WA_DFKKHUREPDS_STR-HWBAS sy-vline 
WA_DFKKHUREPDS_STR-SBASW sy-vline 
WA_DFKKHUREPDS_STR-LWBAS sy-vline 
WA_DFKKHUREPDS_STR-SBETH sy-vline 
WA_DFKKHUREPDS_STR-SBETW sy-vline 
WA_DFKKHUREPDS_STR-SBETL sy-vline 
WA_DFKKHUREPDS_STR-XBLNR sy-vline 
WA_DFKKHUREPDS_STR-XBLNR_ORG sy-vline 
WA_DFKKHUREPDS_STR-BUDAT sy-vline 
WA_DFKKHUREPDS_STR-BLDAT sy-vline 
WA_DFKKHUREPDS_STR-FAEDN sy-vline 
WA_DFKKHUREPDS_STR-VATDATE sy-vline 
WA_DFKKHUREPDS_STR-STBEL sy-vline 
WA_DFKKHUREPDS_STR-STCEG sy-vline 
WA_DFKKHUREPDS_STR-TAXTYPE sy-vline 
WA_DFKKHUREPDS_STR-NAME1 sy-vline 
WA_DFKKHUREPDS_STR-FIKEY sy-vline 
WA_DFKKHUREPDS_STR-CPUDT sy-vline 
WA_DFKKHUREPDS_STR-INV_ISSDAT sy-vline 
WA_DFKKHUREPDS_STR-LIMIT sy-vline      INTO ld_text SEPARATED BY SPACE.

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