ABAP Select data from SAP table IUILDISCOUNTVH into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IUILDISCOUNTVH
*  INTO TABLE @DATA(IT_IUILDISCOUNTVH2).
*--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_IUILDISCOUNTVH INDEX 1 INTO DATA(WA_IUILDISCOUNTVH2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IUILDISCOUNTVH>-MANDT = 1.
<IUILDISCOUNTVH>-UTILITIESREFERENCEPRODUCT = 1.
<IUILDISCOUNTVH>-CHARACTERISTIC = 1.
<IUILDISCOUNTVH>-UTILSOPERANDMAPPINGID = 1.
<IUILDISCOUNTVH>-UTILSSEMANTICSNAME1 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IUILDISCOUNTVH-UTILSSEMANTICSNAME2, sy-vline,
  WA_IUILDISCOUNTVH-UTILSSEMANTICSDESCRIPTION, sy-vline,
  WA_IUILDISCOUNTVH-UTILSSEMANTICSTYPEDESCRIPTION, sy-vline,
  WA_IUILDISCOUNTVH-CHARCVALUEUNIT, sy-vline,
  WA_IUILDISCOUNTVH-CURRENCY, sy-vline,
  WA_IUILDISCOUNTVH-ENTRYISREQUIRED, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IUILDISCOUNTVH 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_IUILDISCOUNTVH 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_IUILDISCOUNTVH INTO WA_IUILDISCOUNTVH.


*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 MATN1, internal->external for field UTILITIESREFERENCEPRODUCT
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_IUILDISCOUNTVH-UTILITIESREFERENCEPRODUCT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IUILDISCOUNTVH-UTILITIESREFERENCEPRODUCT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field CHARCVALUEUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IUILDISCOUNTVH-CHARCVALUEUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IUILDISCOUNTVH-CHARCVALUEUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field UTILSTIMESLICEDURATIONUOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IUILDISCOUNTVH-UTILSTIMESLICEDURATIONUOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IUILDISCOUNTVH-UTILSTIMESLICEDURATIONUOM.
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_IUILDISCOUNTVH_STR, 
MANDT TYPE STRING,
UTILITIESREFERENCEPRODUCT TYPE STRING,
CHARACTERISTIC TYPE STRING,
UTILSOPERANDMAPPINGID TYPE STRING,
UTILSSEMANTICSNAME1 TYPE STRING,
UTILSSEMANTICSNAME2 TYPE STRING,
UTILSSEMANTICSDESCRIPTION TYPE STRING,
UTILSSEMANTICSTYPEDESCRIPTION TYPE STRING,
CHARCVALUEUNIT TYPE STRING,
CURRENCY TYPE STRING,
ENTRYISREQUIRED TYPE STRING,
UTILSOPERANDCATEGORY TYPE STRING,
CHARCDATATYPE TYPE STRING,
UTILSTIMESLICEDURATIONUOM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IUILDISCOUNTVH_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_IUILDISCOUNTVH_STR-MANDT sy-vline 
WA_IUILDISCOUNTVH_STR-UTILITIESREFERENCEPRODUCT sy-vline 
WA_IUILDISCOUNTVH_STR-CHARACTERISTIC sy-vline 
WA_IUILDISCOUNTVH_STR-UTILSOPERANDMAPPINGID sy-vline 
WA_IUILDISCOUNTVH_STR-UTILSSEMANTICSNAME1 sy-vline 
WA_IUILDISCOUNTVH_STR-UTILSSEMANTICSNAME2 sy-vline 
WA_IUILDISCOUNTVH_STR-UTILSSEMANTICSDESCRIPTION sy-vline 
WA_IUILDISCOUNTVH_STR-UTILSSEMANTICSTYPEDESCRIPTION sy-vline 
WA_IUILDISCOUNTVH_STR-CHARCVALUEUNIT sy-vline 
WA_IUILDISCOUNTVH_STR-CURRENCY sy-vline 
WA_IUILDISCOUNTVH_STR-ENTRYISREQUIRED sy-vline 
WA_IUILDISCOUNTVH_STR-UTILSOPERANDCATEGORY sy-vline 
WA_IUILDISCOUNTVH_STR-CHARCDATATYPE sy-vline 
WA_IUILDISCOUNTVH_STR-UTILSTIMESLICEDURATIONUOM sy-vline      INTO ld_text SEPARATED BY SPACE.

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