ABAP Select data from SAP table IUTILDISHEADER into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IUTILDISHEADER
*  INTO TABLE @DATA(IT_IUTILDISHEADER2).
*--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_IUTILDISHEADER INDEX 1 INTO DATA(WA_IUTILDISHEADER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IUTILDISHEADER>-MANDT = 1.
<IUTILDISHEADER>-UTILSDISCOUNTID = 1.
<IUTILDISHEADER>-DIVISION = 1.
<IUTILDISHEADER>-UTILSDISCOUNTCATEGORY = 1.
<IUTILDISHEADER>-UTILSREFERENCEBASE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IUTILDISHEADER-UTILSDISCOUNTTYPE, sy-vline,
  WA_IUTILDISHEADER-UTILSREGISTERSAREPERMITTED, sy-vline,
  WA_IUTILDISHEADER-UTILSMEASUREMENTUNIT, sy-vline,
  WA_IUTILDISHEADER-UTILITIESBILLINGCLASS, sy-vline,
  WA_IUTILDISHEADER-UTILSTIMEBASIS, sy-vline,
  WA_IUTILDISHEADER-UTILSTIMECATEGORY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IUTILDISHEADER 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_IUTILDISHEADER 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_IUTILDISHEADER INTO WA_IUTILDISHEADER.


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

*Conversion exit CUNIT, internal->external for field UTILSMEASUREMENTUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IUTILDISHEADER-UTILSMEASUREMENTUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IUTILDISHEADER-UTILSMEASUREMENTUNIT.
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_IUTILDISHEADER_STR, 
MANDT TYPE STRING,
UTILSDISCOUNTID TYPE STRING,
DIVISION TYPE STRING,
UTILSDISCOUNTCATEGORY TYPE STRING,
UTILSREFERENCEBASE TYPE STRING,
UTILSDISCOUNTTYPE TYPE STRING,
UTILSREGISTERSAREPERMITTED TYPE STRING,
UTILSMEASUREMENTUNIT TYPE STRING,
UTILITIESBILLINGCLASS TYPE STRING,
UTILSTIMEBASIS TYPE STRING,
UTILSTIMECATEGORY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IUTILDISHEADER_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_IUTILDISHEADER_STR-MANDT sy-vline 
WA_IUTILDISHEADER_STR-UTILSDISCOUNTID sy-vline 
WA_IUTILDISHEADER_STR-DIVISION sy-vline 
WA_IUTILDISHEADER_STR-UTILSDISCOUNTCATEGORY sy-vline 
WA_IUTILDISHEADER_STR-UTILSREFERENCEBASE sy-vline 
WA_IUTILDISHEADER_STR-UTILSDISCOUNTTYPE sy-vline 
WA_IUTILDISHEADER_STR-UTILSREGISTERSAREPERMITTED sy-vline 
WA_IUTILDISHEADER_STR-UTILSMEASUREMENTUNIT sy-vline 
WA_IUTILDISHEADER_STR-UTILITIESBILLINGCLASS sy-vline 
WA_IUTILDISHEADER_STR-UTILSTIMEBASIS sy-vline 
WA_IUTILDISHEADER_STR-UTILSTIMECATEGORY sy-vline      INTO ld_text SEPARATED BY SPACE.

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