ABAP Select data from SAP table UKPFD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM UKPFD
*  INTO TABLE @DATA(IT_UKPFD2).
*--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_UKPFD INDEX 1 INTO DATA(WA_UKPFD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<UKPFD>-MANDT = 1.
<UKPFD>-UBLNR = 1.
<UKPFD>-UBJAHR = 1.
<UKPFD>-BUDAT = 1.
<UKPFD>-ERDAT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_UKPFD-ERNAM, sy-vline,
  WA_UKPFD-AEDAT, sy-vline,
  WA_UKPFD-AENAM, sy-vline,
  WA_UKPFD-UBSTA, sy-vline,
  WA_UKPFD-BELNR, sy-vline,
  WA_UKPFD-MBLNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_UKPFD 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_UKPFD 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_UKPFD INTO WA_UKPFD.


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

*Conversion exit GJAHR, internal->external for field UBJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_UKPFD-UBJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_UKPFD-UBJAHR.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit ALPHA, internal->external for field PV_GRUND
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_UKPFD-PV_GRUND
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_UKPFD-PV_GRUND.
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_UKPFD_STR, 
MANDT TYPE STRING,
UBLNR TYPE STRING,
UBJAHR TYPE STRING,
BUDAT TYPE STRING,
ERDAT TYPE STRING,
ERNAM TYPE STRING,
AEDAT TYPE STRING,
AENAM TYPE STRING,
UBSTA TYPE STRING,
BELNR TYPE STRING,
MBLNR TYPE STRING,
VKUNR TYPE STRING,
BUKRS TYPE STRING,
WERKS TYPE STRING,
WNAME TYPE STRING,
BWKEY TYPE STRING,
BWTAR TYPE STRING,
PV_GRUND TYPE STRING,
PV_GRTXT TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
UBSTA_TXT TYPE STRING,
UBLNR_TXT TYPE STRING,
UBJAHR_TXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_UKPFD_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_UKPFD_STR-MANDT sy-vline 
WA_UKPFD_STR-UBLNR sy-vline 
WA_UKPFD_STR-UBJAHR sy-vline 
WA_UKPFD_STR-BUDAT sy-vline 
WA_UKPFD_STR-ERDAT sy-vline 
WA_UKPFD_STR-ERNAM sy-vline 
WA_UKPFD_STR-AEDAT sy-vline 
WA_UKPFD_STR-AENAM sy-vline 
WA_UKPFD_STR-UBSTA sy-vline 
WA_UKPFD_STR-BELNR sy-vline 
WA_UKPFD_STR-MBLNR sy-vline 
WA_UKPFD_STR-VKUNR sy-vline 
WA_UKPFD_STR-BUKRS sy-vline 
WA_UKPFD_STR-WERKS sy-vline 
WA_UKPFD_STR-WNAME sy-vline 
WA_UKPFD_STR-BWKEY sy-vline 
WA_UKPFD_STR-BWTAR sy-vline 
WA_UKPFD_STR-PV_GRUND sy-vline 
WA_UKPFD_STR-PV_GRTXT sy-vline 
WA_UKPFD_STR-VKORG sy-vline 
WA_UKPFD_STR-VTWEG sy-vline 
WA_UKPFD_STR-UBSTA_TXT sy-vline 
WA_UKPFD_STR-UBLNR_TXT sy-vline 
WA_UKPFD_STR-UBJAHR_TXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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