ABAP Select data from SAP table IEQUISTOCKSEG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IEQUISTOCKSEG
*  INTO TABLE @DATA(IT_IEQUISTOCKSEG2).
*--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_IEQUISTOCKSEG INDEX 1 INTO DATA(WA_IEQUISTOCKSEG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IEQUISTOCKSEG>-MANDT = 1.
<IEQUISTOCKSEG>-EQUIPMENT = 1.
<IEQUISTOCKSEG>-PLANT = 1.
<IEQUISTOCKSEG>-STORAGELOCATION = 1.
<IEQUISTOCKSEG>-CUSTOMER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IEQUISTOCKSEG-SUPPLIER, sy-vline,
  WA_IEQUISTOCKSEG-SALESORDER, sy-vline,
  WA_IEQUISTOCKSEG-SALESORDERITEM, sy-vline,
  WA_IEQUISTOCKSEG-INVENTORYSPECIALSTOCKTYPE, sy-vline,
  WA_IEQUISTOCKSEG-WBSELEMENTINTERNALID, sy-vline,
  WA_IEQUISTOCKSEG-BATCH, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IEQUISTOCKSEG 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_IEQUISTOCKSEG 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_IEQUISTOCKSEG INTO WA_IEQUISTOCKSEG.


*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 EQUIPMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IEQUISTOCKSEG-EQUIPMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IEQUISTOCKSEG-EQUIPMENT.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit ALPHA, internal->external for field STOCKOWNER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IEQUISTOCKSEG-STOCKOWNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IEQUISTOCKSEG-STOCKOWNER.
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_IEQUISTOCKSEG_STR, 
MANDT TYPE STRING,
EQUIPMENT TYPE STRING,
PLANT TYPE STRING,
STORAGELOCATION TYPE STRING,
CUSTOMER TYPE STRING,
SUPPLIER TYPE STRING,
SALESORDER TYPE STRING,
SALESORDERITEM TYPE STRING,
INVENTORYSPECIALSTOCKTYPE TYPE STRING,
WBSELEMENTINTERNALID TYPE STRING,
BATCH TYPE STRING,
INVENTORYSTOCKTYPE TYPE STRING,
STOCKOWNER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IEQUISTOCKSEG_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_IEQUISTOCKSEG_STR-MANDT sy-vline 
WA_IEQUISTOCKSEG_STR-EQUIPMENT sy-vline 
WA_IEQUISTOCKSEG_STR-PLANT sy-vline 
WA_IEQUISTOCKSEG_STR-STORAGELOCATION sy-vline 
WA_IEQUISTOCKSEG_STR-CUSTOMER sy-vline 
WA_IEQUISTOCKSEG_STR-SUPPLIER sy-vline 
WA_IEQUISTOCKSEG_STR-SALESORDER sy-vline 
WA_IEQUISTOCKSEG_STR-SALESORDERITEM sy-vline 
WA_IEQUISTOCKSEG_STR-INVENTORYSPECIALSTOCKTYPE sy-vline 
WA_IEQUISTOCKSEG_STR-WBSELEMENTINTERNALID sy-vline 
WA_IEQUISTOCKSEG_STR-BATCH sy-vline 
WA_IEQUISTOCKSEG_STR-INVENTORYSTOCKTYPE sy-vline 
WA_IEQUISTOCKSEG_STR-STOCKOWNER sy-vline      INTO ld_text SEPARATED BY SPACE.

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