ABAP Select data from SAP table /GBTINT/S_STOCK into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /GBTINT/S_STOCK
*  INTO TABLE @DATA(IT_/GBTINT/S_STOCK2).
*--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_/GBTINT/S_STOCK INDEX 1 INTO DATA(WA_/GBTINT/S_STOCK2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</GBTINT/S_STOCK>-MATNR = 1.
</GBTINT/S_STOCK>-WERKS = 1.
</GBTINT/S_STOCK>-CHARG = 1.
</GBTINT/S_STOCK>-LGORT = 1.
</GBTINT/S_STOCK>-SOBKZ = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/GBTINT/S_STOCK-SSNUM, sy-vline,
  WA_/GBTINT/S_STOCK-TABNAME, sy-vline,
  WA_/GBTINT/S_STOCK-WERKS_NAME, sy-vline,
  WA_/GBTINT/S_STOCK-LGORT_NAME, sy-vline,
  WA_/GBTINT/S_STOCK-SSNUM_NAME, sy-vline,
  WA_/GBTINT/S_STOCK-MEINH, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/GBTINT/S_STOCK 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_/GBTINT/S_STOCK 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_/GBTINT/S_STOCK INTO WA_/GBTINT/S_STOCK.


*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 MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_/GBTINT/S_STOCK-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/GBTINT/S_STOCK-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/GBTINT/S_STOCK-MEINH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/GBTINT/S_STOCK-MEINH.
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_/GBTINT/S_STOCK_STR, 
MATNR TYPE STRING,
WERKS TYPE STRING,
CHARG TYPE STRING,
LGORT TYPE STRING,
SOBKZ TYPE STRING,
SSNUM TYPE STRING,
TABNAME TYPE STRING,
WERKS_NAME TYPE STRING,
LGORT_NAME TYPE STRING,
SSNUM_NAME TYPE STRING,
MEINH TYPE STRING,
SPERR TYPE STRING,
LABST TYPE STRING,
UMLMD TYPE STRING,
INSME TYPE STRING,
EINME TYPE STRING,
SPEME TYPE STRING,
RETME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/GBTINT/S_STOCK_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_/GBTINT/S_STOCK_STR-MATNR sy-vline 
WA_/GBTINT/S_STOCK_STR-WERKS sy-vline 
WA_/GBTINT/S_STOCK_STR-CHARG sy-vline 
WA_/GBTINT/S_STOCK_STR-LGORT sy-vline 
WA_/GBTINT/S_STOCK_STR-SOBKZ sy-vline 
WA_/GBTINT/S_STOCK_STR-SSNUM sy-vline 
WA_/GBTINT/S_STOCK_STR-TABNAME sy-vline 
WA_/GBTINT/S_STOCK_STR-WERKS_NAME sy-vline 
WA_/GBTINT/S_STOCK_STR-LGORT_NAME sy-vline 
WA_/GBTINT/S_STOCK_STR-SSNUM_NAME sy-vline 
WA_/GBTINT/S_STOCK_STR-MEINH sy-vline 
WA_/GBTINT/S_STOCK_STR-SPERR sy-vline 
WA_/GBTINT/S_STOCK_STR-LABST sy-vline 
WA_/GBTINT/S_STOCK_STR-UMLMD sy-vline 
WA_/GBTINT/S_STOCK_STR-INSME sy-vline 
WA_/GBTINT/S_STOCK_STR-EINME sy-vline 
WA_/GBTINT/S_STOCK_STR-SPEME sy-vline 
WA_/GBTINT/S_STOCK_STR-RETME sy-vline      INTO ld_text SEPARATED BY SPACE.

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