ABAP Select data from SAP table FMUDKBLPP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FMUDKBLPP
*  INTO TABLE @DATA(IT_FMUDKBLPP2).
*--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_FMUDKBLPP INDEX 1 INTO DATA(WA_FMUDKBLPP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FMUDKBLPP>-MANDT = 1.
<FMUDKBLPP>-FCBELNR = 1.
<FMUDKBLPP>-FCBLPOS = 1.
<FMUDKBLPP>-RFIPOS = 1.
<FMUDKBLPP>-RFICTR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FMUDKBLPP-RFONDS, sy-vline,
  WA_FMUDKBLPP-RESTHMK, sy-vline,
  WA_FMUDKBLPP-BUART, sy-vline,
  WA_FMUDKBLPP-STUNR, sy-vline,
  WA_FMUDKBLPP-RFAREA, sy-vline,
  WA_FMUDKBLPP-FIKRS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FMUDKBLPP 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_FMUDKBLPP 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_FMUDKBLPP INTO WA_FMUDKBLPP.


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

*Conversion exit FMCIS, internal->external for field RFIPOS
CALL FUNCTION 'CONVERSION_EXIT_FMCIS_OUTPUT'
  EXPORTING
    input =                      WA_FMUDKBLPP-RFIPOS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMUDKBLPP-RFIPOS.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit GJAHR, internal->external for field BGGJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_FMUDKBLPP-BGGJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMUDKBLPP-BGGJAHR.
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_FMUDKBLPP_STR, 
MANDT TYPE STRING,
FCBELNR TYPE STRING,
FCBLPOS TYPE STRING,
RFIPOS TYPE STRING,
RFICTR TYPE STRING,
RFONDS TYPE STRING,
RESTHMK TYPE STRING,
BUART TYPE STRING,
STUNR TYPE STRING,
RFAREA TYPE STRING,
FIKRS TYPE STRING,
BGGJAHR TYPE STRING,
BGPERIO TYPE STRING,
BGBTR TYPE STRING,
BGBELNR TYPE STRING,
BGBUZEI TYPE STRING,
INCREASED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FMUDKBLPP_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_FMUDKBLPP_STR-MANDT sy-vline 
WA_FMUDKBLPP_STR-FCBELNR sy-vline 
WA_FMUDKBLPP_STR-FCBLPOS sy-vline 
WA_FMUDKBLPP_STR-RFIPOS sy-vline 
WA_FMUDKBLPP_STR-RFICTR sy-vline 
WA_FMUDKBLPP_STR-RFONDS sy-vline 
WA_FMUDKBLPP_STR-RESTHMK sy-vline 
WA_FMUDKBLPP_STR-BUART sy-vline 
WA_FMUDKBLPP_STR-STUNR sy-vline 
WA_FMUDKBLPP_STR-RFAREA sy-vline 
WA_FMUDKBLPP_STR-FIKRS sy-vline 
WA_FMUDKBLPP_STR-BGGJAHR sy-vline 
WA_FMUDKBLPP_STR-BGPERIO sy-vline 
WA_FMUDKBLPP_STR-BGBTR sy-vline 
WA_FMUDKBLPP_STR-BGBELNR sy-vline 
WA_FMUDKBLPP_STR-BGBUZEI sy-vline 
WA_FMUDKBLPP_STR-INCREASED sy-vline      INTO ld_text SEPARATED BY SPACE.

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