ABAP Select data from SAP table /SEHS/HMS_DNIO into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SEHS/HMS_DNIO 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 /SEHS/HMS_DNIO. 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 /SEHS/HMS_DNIO 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_/SEHS/HMS_DNIO TYPE STANDARD TABLE OF /SEHS/HMS_DNIO,
      WA_/SEHS/HMS_DNIO TYPE /SEHS/HMS_DNIO,
      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: </SEHS/HMS_DNIO> TYPE /SEHS/HMS_DNIO.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SEHS/HMS_DNIO
  INTO TABLE IT_/SEHS/HMS_DNIO.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SEHS/HMS_DNIO
*  INTO TABLE @DATA(IT_/SEHS/HMS_DNIO2).
*--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_/SEHS/HMS_DNIO INDEX 1 INTO DATA(WA_/SEHS/HMS_DNIO2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SEHS/HMS_DNIO ASSIGNING </SEHS/HMS_DNIO>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SEHS/HMS_DNIO>-MARKFLG = 1.
</SEHS/HMS_DNIO>-SELEFLG = 1.
</SEHS/HMS_DNIO>-LINENO = 1.
</SEHS/HMS_DNIO>-LINEMOD = 1.
</SEHS/HMS_DNIO>-CHCOFLG = 1.

ENDLOOP.

LOOP AT IT_/SEHS/HMS_DNIO INTO WA_/SEHS/HMS_DNIO.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SEHS/HMS_DNIO-LOCKMOD, sy-vline,
  WA_/SEHS/HMS_DNIO-INTRFLG, sy-vline,
  WA_/SEHS/HMS_DNIO-MANDT, sy-vline,
  WA_/SEHS/HMS_DNIO-RECN, sy-vline,
  WA_/SEHS/HMS_DNIO-ACTN, sy-vline,
  WA_/SEHS/HMS_DNIO-VALFR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SEHS/HMS_DNIO 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_/SEHS/HMS_DNIO 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_/SEHS/HMS_DNIO INTO WA_/SEHS/HMS_DNIO.


*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 ACTN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SEHS/HMS_DNIO-ACTN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SEHS/HMS_DNIO-ACTN.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit CUNIT, internal->external for field UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/SEHS/HMS_DNIO-UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SEHS/HMS_DNIO-UNIT.
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_/SEHS/HMS_DNIO_STR, 
MARKFLG TYPE STRING,
SELEFLG TYPE STRING,
LINENO TYPE STRING,
LINEMOD TYPE STRING,
CHCOFLG TYPE STRING,
LOCKMOD TYPE STRING,
INTRFLG TYPE STRING,
MANDT TYPE STRING,
RECN TYPE STRING,
ACTN TYPE STRING,
VALFR TYPE STRING,
VALTO TYPE STRING,
AENNR TYPE STRING,
DELFLG TYPE STRING,
PARKFLG TYPE STRING,
CRDAT TYPE STRING,
CRNAM TYPE STRING,
UPDDAT TYPE STRING,
UPDNAM TYPE STRING,
SRSID TYPE STRING,
OWNID TYPE STRING,
RECNROOT TYPE STRING,
NUMTYPE TYPE STRING,
AVGVAL TYPE STRING,
AVGVALFLG TYPE STRING,
AVGDEC TYPE STRING,
LOWOP TYPE STRING,
LOWVAL TYPE STRING,
LOWVALFLG TYPE STRING,
LOWDEC TYPE STRING,
UPPOP TYPE STRING,
UPPVAL TYPE STRING,
UPPVALFLG TYPE STRING,
UPPDEC TYPE STRING,
UNIT TYPE STRING,
AVGVALTXT TYPE STRING,
LOWVALTXT TYPE STRING,
UPPVALTXT TYPE STRING,
DIMID TYPE STRING,
ID TYPE STRING,
OBJECT TYPE STRING,
TYP TYPE STRING,
NUMTYPETXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SEHS/HMS_DNIO_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_/SEHS/HMS_DNIO_STR-MARKFLG sy-vline 
WA_/SEHS/HMS_DNIO_STR-SELEFLG sy-vline 
WA_/SEHS/HMS_DNIO_STR-LINENO sy-vline 
WA_/SEHS/HMS_DNIO_STR-LINEMOD sy-vline 
WA_/SEHS/HMS_DNIO_STR-CHCOFLG sy-vline 
WA_/SEHS/HMS_DNIO_STR-LOCKMOD sy-vline 
WA_/SEHS/HMS_DNIO_STR-INTRFLG sy-vline 
WA_/SEHS/HMS_DNIO_STR-MANDT sy-vline 
WA_/SEHS/HMS_DNIO_STR-RECN sy-vline 
WA_/SEHS/HMS_DNIO_STR-ACTN sy-vline 
WA_/SEHS/HMS_DNIO_STR-VALFR sy-vline 
WA_/SEHS/HMS_DNIO_STR-VALTO sy-vline 
WA_/SEHS/HMS_DNIO_STR-AENNR sy-vline 
WA_/SEHS/HMS_DNIO_STR-DELFLG sy-vline 
WA_/SEHS/HMS_DNIO_STR-PARKFLG sy-vline 
WA_/SEHS/HMS_DNIO_STR-CRDAT sy-vline 
WA_/SEHS/HMS_DNIO_STR-CRNAM sy-vline 
WA_/SEHS/HMS_DNIO_STR-UPDDAT sy-vline 
WA_/SEHS/HMS_DNIO_STR-UPDNAM sy-vline 
WA_/SEHS/HMS_DNIO_STR-SRSID sy-vline 
WA_/SEHS/HMS_DNIO_STR-OWNID sy-vline 
WA_/SEHS/HMS_DNIO_STR-RECNROOT sy-vline 
WA_/SEHS/HMS_DNIO_STR-NUMTYPE sy-vline 
WA_/SEHS/HMS_DNIO_STR-AVGVAL sy-vline 
WA_/SEHS/HMS_DNIO_STR-AVGVALFLG sy-vline 
WA_/SEHS/HMS_DNIO_STR-AVGDEC sy-vline 
WA_/SEHS/HMS_DNIO_STR-LOWOP sy-vline 
WA_/SEHS/HMS_DNIO_STR-LOWVAL sy-vline 
WA_/SEHS/HMS_DNIO_STR-LOWVALFLG sy-vline 
WA_/SEHS/HMS_DNIO_STR-LOWDEC sy-vline 
WA_/SEHS/HMS_DNIO_STR-UPPOP sy-vline 
WA_/SEHS/HMS_DNIO_STR-UPPVAL sy-vline 
WA_/SEHS/HMS_DNIO_STR-UPPVALFLG sy-vline 
WA_/SEHS/HMS_DNIO_STR-UPPDEC sy-vline 
WA_/SEHS/HMS_DNIO_STR-UNIT sy-vline 
WA_/SEHS/HMS_DNIO_STR-AVGVALTXT sy-vline 
WA_/SEHS/HMS_DNIO_STR-LOWVALTXT sy-vline 
WA_/SEHS/HMS_DNIO_STR-UPPVALTXT sy-vline 
WA_/SEHS/HMS_DNIO_STR-DIMID sy-vline 
WA_/SEHS/HMS_DNIO_STR-ID sy-vline 
WA_/SEHS/HMS_DNIO_STR-OBJECT sy-vline 
WA_/SEHS/HMS_DNIO_STR-TYP sy-vline 
WA_/SEHS/HMS_DNIO_STR-NUMTYPETXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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