ABAP Select data from SAP table CUPDGCLFNUNDT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CUPDGCLFNUNDT
*  INTO TABLE @DATA(IT_CUPDGCLFNUNDT2).
*--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_CUPDGCLFNUNDT INDEX 1 INTO DATA(WA_CUPDGCLFNUNDT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CUPDGCLFNUNDT>-MANDT = 1.
<CUPDGCLFNUNDT>-CMPLRQRSLTUUID = 1.
<CUPDGCLFNUNDT>-LANGUAGE = 1.
<CUPDGCLFNUNDT>-LANGUAGEFOREDIT = 1.
<CUPDGCLFNUNDT>-BASICDESCRIPTIONSORTORDERVALUE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CUPDGCLFNUNDT-LANGUAGENAME, sy-vline,
  WA_CUPDGCLFNUNDT-CREATIONDATETIME, sy-vline,
  WA_CUPDGCLFNUNDT-CREATEDBYUSER, sy-vline,
  WA_CUPDGCLFNUNDT-LASTCHANGEDATETIME, sy-vline,
  WA_CUPDGCLFNUNDT-LASTCHANGEDBYUSER, sy-vline,
  WA_CUPDGCLFNUNDT-DANGEROUSGOODBASICDESCRIPTION, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CUPDGCLFNUNDT 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_CUPDGCLFNUNDT 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_CUPDGCLFNUNDT INTO WA_CUPDGCLFNUNDT.


*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 ISOLA, internal->external for field LANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_CUPDGCLFNUNDT-LANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CUPDGCLFNUNDT-LANGUAGE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field LANGUAGEFOREDIT
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_CUPDGCLFNUNDT-LANGUAGEFOREDIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CUPDGCLFNUNDT-LANGUAGEFOREDIT.
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_CUPDGCLFNUNDT_STR, 
MANDT TYPE STRING,
CMPLRQRSLTUUID TYPE STRING,
LANGUAGE TYPE STRING,
LANGUAGEFOREDIT TYPE STRING,
BASICDESCRIPTIONSORTORDERVALUE TYPE STRING,
LANGUAGENAME TYPE STRING,
CREATIONDATETIME TYPE STRING,
CREATEDBYUSER TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
DANGEROUSGOODBASICDESCRIPTION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CUPDGCLFNUNDT_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_CUPDGCLFNUNDT_STR-MANDT sy-vline 
WA_CUPDGCLFNUNDT_STR-CMPLRQRSLTUUID sy-vline 
WA_CUPDGCLFNUNDT_STR-LANGUAGE sy-vline 
WA_CUPDGCLFNUNDT_STR-LANGUAGEFOREDIT sy-vline 
WA_CUPDGCLFNUNDT_STR-BASICDESCRIPTIONSORTORDERVALUE sy-vline 
WA_CUPDGCLFNUNDT_STR-LANGUAGENAME sy-vline 
WA_CUPDGCLFNUNDT_STR-CREATIONDATETIME sy-vline 
WA_CUPDGCLFNUNDT_STR-CREATEDBYUSER sy-vline 
WA_CUPDGCLFNUNDT_STR-LASTCHANGEDATETIME sy-vline 
WA_CUPDGCLFNUNDT_STR-LASTCHANGEDBYUSER sy-vline 
WA_CUPDGCLFNUNDT_STR-DANGEROUSGOODBASICDESCRIPTION sy-vline      INTO ld_text SEPARATED BY SPACE.

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