ABAP Select data from SAP table ISTOCKQUANVALTS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISTOCKQUANVALTS
*  INTO TABLE @DATA(IT_ISTOCKQUANVALTS2).
*--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_ISTOCKQUANVALTS INDEX 1 INTO DATA(WA_ISTOCKQUANVALTS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISTOCKQUANVALTS>-MANDT = 1.
<ISTOCKQUANVALTS>-ENDDATE = 1.
<ISTOCKQUANVALTS>-YEARPERIOD = 1.
<ISTOCKQUANVALTS>-PRODUCT = 1.
<ISTOCKQUANVALTS>-PLANT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISTOCKQUANVALTS-STORAGELOCATION, sy-vline,
  WA_ISTOCKQUANVALTS-BATCH, sy-vline,
  WA_ISTOCKQUANVALTS-SUPPLIER, sy-vline,
  WA_ISTOCKQUANVALTS-SDDOCUMENT, sy-vline,
  WA_ISTOCKQUANVALTS-SDDOCUMENTITEM, sy-vline,
  WA_ISTOCKQUANVALTS-WBSELEMENTINTERNALID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISTOCKQUANVALTS 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_ISTOCKQUANVALTS 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_ISTOCKQUANVALTS INTO WA_ISTOCKQUANVALTS.


*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 PRODUCT
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_ISTOCKQUANVALTS-PRODUCT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISTOCKQUANVALTS-PRODUCT.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ABPSP, internal->external for field WBSELEMENTINTERNALID
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_ISTOCKQUANVALTS-WBSELEMENTINTERNALID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISTOCKQUANVALTS-WBSELEMENTINTERNALID.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field MATERIALBASEUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ISTOCKQUANVALTS-MATERIALBASEUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISTOCKQUANVALTS-MATERIALBASEUNIT.
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_ISTOCKQUANVALTS_STR, 
MANDT TYPE STRING,
ENDDATE TYPE STRING,
YEARPERIOD TYPE STRING,
PRODUCT TYPE STRING,
PLANT TYPE STRING,
STORAGELOCATION TYPE STRING,
BATCH TYPE STRING,
SUPPLIER TYPE STRING,
SDDOCUMENT TYPE STRING,
SDDOCUMENTITEM TYPE STRING,
WBSELEMENTINTERNALID TYPE STRING,
CUSTOMER TYPE STRING,
INVENTORYSTOCKTYPE TYPE STRING,
INVENTORYSPECIALSTOCKTYPE TYPE STRING,
MATERIALBASEUNIT TYPE STRING,
CURRENCY TYPE STRING,
VALUATIONAREATYPE TYPE STRING,
DISPLAYCURRENCY TYPE STRING,
COMPANYCODE TYPE STRING,
MATLWRHSSTKQTYINMATLBASEUNIT TYPE STRING,
STOCKVALUEINCCCRCY TYPE STRING,
STOCKVALUEINDISPLAYCURRENCY TYPE STRING,
STOCKVALUEINDISPLAYCURRENCYEND TYPE STRING,
CALENDARMONTH TYPE STRING,
CALENDARQUARTER TYPE STRING,
PERIODTYPE TYPE STRING,
PRODUCTNAME TYPE STRING,
PLANTNAME TYPE STRING,
STORAGELOCATIONNAME TYPE STRING,
MATERIALGROUP TYPE STRING,
MATERIALGROUPNAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISTOCKQUANVALTS_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_ISTOCKQUANVALTS_STR-MANDT sy-vline 
WA_ISTOCKQUANVALTS_STR-ENDDATE sy-vline 
WA_ISTOCKQUANVALTS_STR-YEARPERIOD sy-vline 
WA_ISTOCKQUANVALTS_STR-PRODUCT sy-vline 
WA_ISTOCKQUANVALTS_STR-PLANT sy-vline 
WA_ISTOCKQUANVALTS_STR-STORAGELOCATION sy-vline 
WA_ISTOCKQUANVALTS_STR-BATCH sy-vline 
WA_ISTOCKQUANVALTS_STR-SUPPLIER sy-vline 
WA_ISTOCKQUANVALTS_STR-SDDOCUMENT sy-vline 
WA_ISTOCKQUANVALTS_STR-SDDOCUMENTITEM sy-vline 
WA_ISTOCKQUANVALTS_STR-WBSELEMENTINTERNALID sy-vline 
WA_ISTOCKQUANVALTS_STR-CUSTOMER sy-vline 
WA_ISTOCKQUANVALTS_STR-INVENTORYSTOCKTYPE sy-vline 
WA_ISTOCKQUANVALTS_STR-INVENTORYSPECIALSTOCKTYPE sy-vline 
WA_ISTOCKQUANVALTS_STR-MATERIALBASEUNIT sy-vline 
WA_ISTOCKQUANVALTS_STR-CURRENCY sy-vline 
WA_ISTOCKQUANVALTS_STR-VALUATIONAREATYPE sy-vline 
WA_ISTOCKQUANVALTS_STR-DISPLAYCURRENCY sy-vline 
WA_ISTOCKQUANVALTS_STR-COMPANYCODE sy-vline 
WA_ISTOCKQUANVALTS_STR-MATLWRHSSTKQTYINMATLBASEUNIT sy-vline 
WA_ISTOCKQUANVALTS_STR-STOCKVALUEINCCCRCY sy-vline 
WA_ISTOCKQUANVALTS_STR-STOCKVALUEINDISPLAYCURRENCY sy-vline 
WA_ISTOCKQUANVALTS_STR-STOCKVALUEINDISPLAYCURRENCYEND sy-vline 
WA_ISTOCKQUANVALTS_STR-CALENDARMONTH sy-vline 
WA_ISTOCKQUANVALTS_STR-CALENDARQUARTER sy-vline 
WA_ISTOCKQUANVALTS_STR-PERIODTYPE sy-vline 
WA_ISTOCKQUANVALTS_STR-PRODUCTNAME sy-vline 
WA_ISTOCKQUANVALTS_STR-PLANTNAME sy-vline 
WA_ISTOCKQUANVALTS_STR-STORAGELOCATIONNAME sy-vline 
WA_ISTOCKQUANVALTS_STR-MATERIALGROUP sy-vline 
WA_ISTOCKQUANVALTS_STR-MATERIALGROUPNAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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