ABAP Select data from SAP table EHHSSW_HSI_ITEM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EHHSSW_HSI_ITEM
*  INTO TABLE @DATA(IT_EHHSSW_HSI_ITEM2).
*--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_EHHSSW_HSI_ITEM INDEX 1 INTO DATA(WA_EHHSSW_HSI_ITEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EHHSSW_HSI_ITEM>-MANDT = 1.
<EHHSSW_HSI_ITEM>-HZDSSUBSTINVENTORYITEMUUID = 1.
<EHHSSW_HSI_ITEM>-HZDSSUBSTINVENTORYUUID = 1.
<EHHSSW_HSI_ITEM>-CHEMICALUUID = 1.
<EHHSSW_HSI_ITEM>-FACTORYJARGONFORSUBSTANCE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EHHSSW_HSI_ITEM-SUBSTYEARLYTONNAGEQTY, sy-vline,
  WA_EHHSSW_HSI_ITEM-SUBSTYEARLYTONNAGEQTYUNIT, sy-vline,
  WA_EHHSSW_HSI_ITEM-SUBSTHOLDUPQTY, sy-vline,
  WA_EHHSSW_HSI_ITEM-SUBSTHOLDUPQTYUNIT, sy-vline,
  WA_EHHSSW_HSI_ITEM-HZDSSUBSTINVTRYITEMISFINISHED, sy-vline,
  WA_EHHSSW_HSI_ITEM-HZDSSUBSTINVTRYITEMISPRINTED, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EHHSSW_HSI_ITEM 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_EHHSSW_HSI_ITEM 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_EHHSSW_HSI_ITEM INTO WA_EHHSSW_HSI_ITEM.


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

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

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

*Conversion exit CUNIT, internal->external for field PREVSUBSTHOLDUPQTYUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_EHHSSW_HSI_ITEM-PREVSUBSTHOLDUPQTYUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHHSSW_HSI_ITEM-PREVSUBSTHOLDUPQTYUNIT.
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_EHHSSW_HSI_ITEM_STR, 
MANDT TYPE STRING,
HZDSSUBSTINVENTORYITEMUUID TYPE STRING,
HZDSSUBSTINVENTORYUUID TYPE STRING,
CHEMICALUUID TYPE STRING,
FACTORYJARGONFORSUBSTANCE TYPE STRING,
SUBSTYEARLYTONNAGEQTY TYPE STRING,
SUBSTYEARLYTONNAGEQTYUNIT TYPE STRING,
SUBSTHOLDUPQTY TYPE STRING,
SUBSTHOLDUPQTYUNIT TYPE STRING,
HZDSSUBSTINVTRYITEMISFINISHED TYPE STRING,
HZDSSUBSTINVTRYITEMISPRINTED TYPE STRING,
HZDSSUBSTINVTRYITMISMRKDFORDEL TYPE STRING,
HZDSSUBSTINVTRYITEMADDDATETIME TYPE STRING,
HZDSSUBSTINVTRYITEMISNEW TYPE STRING,
PREVSUBSTYEARLYTONNAGEQTY TYPE STRING,
PREVSUBSTYEARLYTONNAGEQTYUNIT TYPE STRING,
PREVSUBSTHOLDUPQTY TYPE STRING,
PREVSUBSTHOLDUPQTYUNIT TYPE STRING,
HZDSSUBSTINVENTORYITEMNOTE TYPE STRING,
ACTIVEUUID TYPE STRING,
HASACTIVEENTITY TYPE STRING,
DRAFTENTITYCREATIONDATETIME TYPE STRING,
DRAFTENTITYLASTCHANGEDATETIME TYPE STRING,
DRAFTADMINISTRATIVEDATAUUID TYPE STRING,
DRAFTENTITYCONSISTENCYSTATUS TYPE STRING,
DRAFTENTITYOPERATIONCODE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EHHSSW_HSI_ITEM_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_EHHSSW_HSI_ITEM_STR-MANDT sy-vline 
WA_EHHSSW_HSI_ITEM_STR-HZDSSUBSTINVENTORYITEMUUID sy-vline 
WA_EHHSSW_HSI_ITEM_STR-HZDSSUBSTINVENTORYUUID sy-vline 
WA_EHHSSW_HSI_ITEM_STR-CHEMICALUUID sy-vline 
WA_EHHSSW_HSI_ITEM_STR-FACTORYJARGONFORSUBSTANCE sy-vline 
WA_EHHSSW_HSI_ITEM_STR-SUBSTYEARLYTONNAGEQTY sy-vline 
WA_EHHSSW_HSI_ITEM_STR-SUBSTYEARLYTONNAGEQTYUNIT sy-vline 
WA_EHHSSW_HSI_ITEM_STR-SUBSTHOLDUPQTY sy-vline 
WA_EHHSSW_HSI_ITEM_STR-SUBSTHOLDUPQTYUNIT sy-vline 
WA_EHHSSW_HSI_ITEM_STR-HZDSSUBSTINVTRYITEMISFINISHED sy-vline 
WA_EHHSSW_HSI_ITEM_STR-HZDSSUBSTINVTRYITEMISPRINTED sy-vline 
WA_EHHSSW_HSI_ITEM_STR-HZDSSUBSTINVTRYITMISMRKDFORDEL sy-vline 
WA_EHHSSW_HSI_ITEM_STR-HZDSSUBSTINVTRYITEMADDDATETIME sy-vline 
WA_EHHSSW_HSI_ITEM_STR-HZDSSUBSTINVTRYITEMISNEW sy-vline 
WA_EHHSSW_HSI_ITEM_STR-PREVSUBSTYEARLYTONNAGEQTY sy-vline 
WA_EHHSSW_HSI_ITEM_STR-PREVSUBSTYEARLYTONNAGEQTYUNIT sy-vline 
WA_EHHSSW_HSI_ITEM_STR-PREVSUBSTHOLDUPQTY sy-vline 
WA_EHHSSW_HSI_ITEM_STR-PREVSUBSTHOLDUPQTYUNIT sy-vline 
WA_EHHSSW_HSI_ITEM_STR-HZDSSUBSTINVENTORYITEMNOTE sy-vline 
WA_EHHSSW_HSI_ITEM_STR-ACTIVEUUID sy-vline 
WA_EHHSSW_HSI_ITEM_STR-HASACTIVEENTITY sy-vline 
WA_EHHSSW_HSI_ITEM_STR-DRAFTENTITYCREATIONDATETIME sy-vline 
WA_EHHSSW_HSI_ITEM_STR-DRAFTENTITYLASTCHANGEDATETIME sy-vline 
WA_EHHSSW_HSI_ITEM_STR-DRAFTADMINISTRATIVEDATAUUID sy-vline 
WA_EHHSSW_HSI_ITEM_STR-DRAFTENTITYCONSISTENCYSTATUS sy-vline 
WA_EHHSSW_HSI_ITEM_STR-DRAFTENTITYOPERATIONCODE sy-vline      INTO ld_text SEPARATED BY SPACE.

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