ABAP Select data from SAP table DVIINFO_ALV into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DVIINFO_ALV
*  INTO TABLE @DATA(IT_DVIINFO_ALV2).
*--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_DVIINFO_ALV INDEX 1 INTO DATA(WA_DVIINFO_ALV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DVIINFO_ALV>-INFOICONID = 1.
<DVIINFO_ALV>-INFOHKF = 1.
<DVIINFO_ALV>-INFOTYP = 1.
<DVIINFO_ALV>-INFOPROZESS = 1.
<DVIINFO_ALV>-INFOKEY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DVIINFO_ALV-UNAME, sy-vline,
  WA_DVIINFO_ALV-CDATE, sy-vline,
  WA_DVIINFO_ALV-CTIME, sy-vline,
  WA_DVIINFO_ALV-XTRIAL, sy-vline,
  WA_DVIINFO_ALV-GPART, sy-vline,
  WA_DVIINFO_ALV-VKONT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DVIINFO_ALV 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_DVIINFO_ALV 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_DVIINFO_ALV INTO WA_DVIINFO_ALV.


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

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

*Conversion exit ALPHA, internal->external for field VTREF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DVIINFO_ALV-VTREF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DVIINFO_ALV-VTREF.
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_DVIINFO_ALV_STR, 
INFOICONID TYPE STRING,
INFOHKF TYPE STRING,
INFOTYP TYPE STRING,
INFOPROZESS TYPE STRING,
INFOKEY TYPE STRING,
UNAME TYPE STRING,
CDATE TYPE STRING,
CTIME TYPE STRING,
XTRIAL TYPE STRING,
GPART TYPE STRING,
VKONT TYPE STRING,
VTREF TYPE STRING,
ENTID1 TYPE STRING,
DATA1 TYPE STRING,
ENTID2 TYPE STRING,
DATA2 TYPE STRING,
ENTID3 TYPE STRING,
DATA3 TYPE STRING,
ENTID4 TYPE STRING,
DATA4 TYPE STRING,
XCODT_CLUST TYPE STRING,
LAUFD TYPE STRING,
LAUFI TYPE STRING,
INFO_LAUFD TYPE STRING,
INFO_LAUFI TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DVIINFO_ALV_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_DVIINFO_ALV_STR-INFOICONID sy-vline 
WA_DVIINFO_ALV_STR-INFOHKF sy-vline 
WA_DVIINFO_ALV_STR-INFOTYP sy-vline 
WA_DVIINFO_ALV_STR-INFOPROZESS sy-vline 
WA_DVIINFO_ALV_STR-INFOKEY sy-vline 
WA_DVIINFO_ALV_STR-UNAME sy-vline 
WA_DVIINFO_ALV_STR-CDATE sy-vline 
WA_DVIINFO_ALV_STR-CTIME sy-vline 
WA_DVIINFO_ALV_STR-XTRIAL sy-vline 
WA_DVIINFO_ALV_STR-GPART sy-vline 
WA_DVIINFO_ALV_STR-VKONT sy-vline 
WA_DVIINFO_ALV_STR-VTREF sy-vline 
WA_DVIINFO_ALV_STR-ENTID1 sy-vline 
WA_DVIINFO_ALV_STR-DATA1 sy-vline 
WA_DVIINFO_ALV_STR-ENTID2 sy-vline 
WA_DVIINFO_ALV_STR-DATA2 sy-vline 
WA_DVIINFO_ALV_STR-ENTID3 sy-vline 
WA_DVIINFO_ALV_STR-DATA3 sy-vline 
WA_DVIINFO_ALV_STR-ENTID4 sy-vline 
WA_DVIINFO_ALV_STR-DATA4 sy-vline 
WA_DVIINFO_ALV_STR-XCODT_CLUST sy-vline 
WA_DVIINFO_ALV_STR-LAUFD sy-vline 
WA_DVIINFO_ALV_STR-LAUFI sy-vline 
WA_DVIINFO_ALV_STR-INFO_LAUFD sy-vline 
WA_DVIINFO_ALV_STR-INFO_LAUFI sy-vline      INTO ld_text SEPARATED BY SPACE.

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