ABAP Select data from SAP table CSTOCKVALBYTYPE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CSTOCKVALBYTYPE
*  INTO TABLE @DATA(IT_CSTOCKVALBYTYPE2).
*--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_CSTOCKVALBYTYPE INDEX 1 INTO DATA(WA_CSTOCKVALBYTYPE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CSTOCKVALBYTYPE>-MANDT = 1.
<CSTOCKVALBYTYPE>-MATERIAL = 1.
<CSTOCKVALBYTYPE>-PLANT = 1.
<CSTOCKVALBYTYPE>-STORAGELOCATION = 1.
<CSTOCKVALBYTYPE>-INVENTORYSTOCKTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CSTOCKVALBYTYPE-INVENTORYSPECIALSTOCKTYPE, sy-vline,
  WA_CSTOCKVALBYTYPE-MATERIALBASEUNIT, sy-vline,
  WA_CSTOCKVALBYTYPE-CURRENCY, sy-vline,
  WA_CSTOCKVALBYTYPE-VALUATIONAREATYPE, sy-vline,
  WA_CSTOCKVALBYTYPE-MATERIALGROUP, sy-vline,
  WA_CSTOCKVALBYTYPE-MATERIALTYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CSTOCKVALBYTYPE 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_CSTOCKVALBYTYPE 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_CSTOCKVALBYTYPE INTO WA_CSTOCKVALBYTYPE.


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

*Conversion exit CUNIT, internal->external for field MATERIALBASEUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CSTOCKVALBYTYPE-MATERIALBASEUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CSTOCKVALBYTYPE-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_CSTOCKVALBYTYPE_STR, 
MANDT TYPE STRING,
MATERIAL TYPE STRING,
PLANT TYPE STRING,
STORAGELOCATION TYPE STRING,
INVENTORYSTOCKTYPE TYPE STRING,
INVENTORYSPECIALSTOCKTYPE TYPE STRING,
MATERIALBASEUNIT TYPE STRING,
CURRENCY TYPE STRING,
VALUATIONAREATYPE TYPE STRING,
MATERIALGROUP TYPE STRING,
MATERIALTYPE TYPE STRING,
INVENTORYSTOCKTYPENAME TYPE STRING,
INVENTORYSPECIALSTOCKTYPENAME TYPE STRING,
PLANTNAME TYPE STRING,
MATLWRHSSTKQTYINMATLBASEUNIT TYPE STRING,
STOCKVALUEINCCCRCY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CSTOCKVALBYTYPE_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_CSTOCKVALBYTYPE_STR-MANDT sy-vline 
WA_CSTOCKVALBYTYPE_STR-MATERIAL sy-vline 
WA_CSTOCKVALBYTYPE_STR-PLANT sy-vline 
WA_CSTOCKVALBYTYPE_STR-STORAGELOCATION sy-vline 
WA_CSTOCKVALBYTYPE_STR-INVENTORYSTOCKTYPE sy-vline 
WA_CSTOCKVALBYTYPE_STR-INVENTORYSPECIALSTOCKTYPE sy-vline 
WA_CSTOCKVALBYTYPE_STR-MATERIALBASEUNIT sy-vline 
WA_CSTOCKVALBYTYPE_STR-CURRENCY sy-vline 
WA_CSTOCKVALBYTYPE_STR-VALUATIONAREATYPE sy-vline 
WA_CSTOCKVALBYTYPE_STR-MATERIALGROUP sy-vline 
WA_CSTOCKVALBYTYPE_STR-MATERIALTYPE sy-vline 
WA_CSTOCKVALBYTYPE_STR-INVENTORYSTOCKTYPENAME sy-vline 
WA_CSTOCKVALBYTYPE_STR-INVENTORYSPECIALSTOCKTYPENAME sy-vline 
WA_CSTOCKVALBYTYPE_STR-PLANTNAME sy-vline 
WA_CSTOCKVALBYTYPE_STR-MATLWRHSSTKQTYINMATLBASEUNIT sy-vline 
WA_CSTOCKVALBYTYPE_STR-STOCKVALUEINCCCRCY sy-vline      INTO ld_text SEPARATED BY SPACE.

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