ABAP Select data from SAP table ISU_VARIANT_DISP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISU_VARIANT_DISP
*  INTO TABLE @DATA(IT_ISU_VARIANT_DISP2).
*--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_ISU_VARIANT_DISP INDEX 1 INTO DATA(WA_ISU_VARIANT_DISP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISU_VARIANT_DISP>-PROGRAMM = 1.
<ISU_VARIANT_DISP>-ICON_INFO = 1.
<ISU_VARIANT_DISP>-ICON_ABAP = 1.
<ISU_VARIANT_DISP>-STEXT = 1.
<ISU_VARIANT_DISP>-EIN01 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISU_VARIANT_DISP-EIN02, sy-vline,
  WA_ISU_VARIANT_DISP-EIN03, sy-vline,
  WA_ISU_VARIANT_DISP-EIN04, sy-vline,
  WA_ISU_VARIANT_DISP-EIN05, sy-vline,
  WA_ISU_VARIANT_DISP-EIN06, sy-vline,
  WA_ISU_VARIANT_DISP-EIN07, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISU_VARIANT_DISP 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_ISU_VARIANT_DISP 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_ISU_VARIANT_DISP INTO WA_ISU_VARIANT_DISP.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_ISU_VARIANT_DISP_STR, 
PROGRAMM TYPE STRING,
ICON_INFO TYPE STRING,
ICON_ABAP TYPE STRING,
STEXT TYPE STRING,
EIN01 TYPE STRING,
EIN02 TYPE STRING,
EIN03 TYPE STRING,
EIN04 TYPE STRING,
EIN05 TYPE STRING,
EIN06 TYPE STRING,
EIN07 TYPE STRING,
EIN08 TYPE STRING,
EIN09 TYPE STRING,
EIN10 TYPE STRING,
AUS01 TYPE STRING,
AUS02 TYPE STRING,
AUS03 TYPE STRING,
AUS04 TYPE STRING,
AUS05 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISU_VARIANT_DISP_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_ISU_VARIANT_DISP_STR-PROGRAMM sy-vline 
WA_ISU_VARIANT_DISP_STR-ICON_INFO sy-vline 
WA_ISU_VARIANT_DISP_STR-ICON_ABAP sy-vline 
WA_ISU_VARIANT_DISP_STR-STEXT sy-vline 
WA_ISU_VARIANT_DISP_STR-EIN01 sy-vline 
WA_ISU_VARIANT_DISP_STR-EIN02 sy-vline 
WA_ISU_VARIANT_DISP_STR-EIN03 sy-vline 
WA_ISU_VARIANT_DISP_STR-EIN04 sy-vline 
WA_ISU_VARIANT_DISP_STR-EIN05 sy-vline 
WA_ISU_VARIANT_DISP_STR-EIN06 sy-vline 
WA_ISU_VARIANT_DISP_STR-EIN07 sy-vline 
WA_ISU_VARIANT_DISP_STR-EIN08 sy-vline 
WA_ISU_VARIANT_DISP_STR-EIN09 sy-vline 
WA_ISU_VARIANT_DISP_STR-EIN10 sy-vline 
WA_ISU_VARIANT_DISP_STR-AUS01 sy-vline 
WA_ISU_VARIANT_DISP_STR-AUS02 sy-vline 
WA_ISU_VARIANT_DISP_STR-AUS03 sy-vline 
WA_ISU_VARIANT_DISP_STR-AUS04 sy-vline 
WA_ISU_VARIANT_DISP_STR-AUS05 sy-vline      INTO ld_text SEPARATED BY SPACE.

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