ABAP Select data from SAP table EDX_INV_POSITION_DATA_STRUCT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EDX_INV_POSITION_DATA_STRUCT
*  INTO TABLE @DATA(IT_EDX_INV_POSITION_DATA_STRUCT2).
*--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_EDX_INV_POSITION_DATA_STRUCT INDEX 1 INTO DATA(WA_EDX_INV_POSITION_DATA_STRUCT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EDX_INV_POSITION_DATA_STRUCT>-MANDT = 1.
<EDX_INV_POSITION_DATA_STRUCT>-RBLGP = 1.
<EDX_INV_POSITION_DATA_STRUCT>-WRBTR = 1.
<EDX_INV_POSITION_DATA_STRUCT>-MENGE = 1.
<EDX_INV_POSITION_DATA_STRUCT>-MEINS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EDX_INV_POSITION_DATA_STRUCT-IDNLF, sy-vline,
  WA_EDX_INV_POSITION_DATA_STRUCT-TXZ01, sy-vline,
  WA_EDX_INV_POSITION_DATA_STRUCT-NETPR, sy-vline,
  WA_EDX_INV_POSITION_DATA_STRUCT-MWSKZ, sy-vline,
  WA_EDX_INV_POSITION_DATA_STRUCT-EBELN, sy-vline,
  WA_EDX_INV_POSITION_DATA_STRUCT-EBELP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EDX_INV_POSITION_DATA_STRUCT 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_EDX_INV_POSITION_DATA_STRUCT 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_EDX_INV_POSITION_DATA_STRUCT INTO WA_EDX_INV_POSITION_DATA_STRUCT.


*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 MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_EDX_INV_POSITION_DATA_STRUCT-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EDX_INV_POSITION_DATA_STRUCT-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EDX_INV_POSITION_DATA_STRUCT-EBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EDX_INV_POSITION_DATA_STRUCT-EBELN.
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_EDX_INV_POSITION_DATA_STRUCT_STR, 
MANDT TYPE STRING,
RBLGP TYPE STRING,
WRBTR TYPE STRING,
MENGE TYPE STRING,
MEINS TYPE STRING,
IDNLF TYPE STRING,
TXZ01 TYPE STRING,
NETPR TYPE STRING,
MWSKZ TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,
XBLNR TYPE STRING,
WAERS TYPE STRING,
KALSM TYPE STRING,
SELKZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EDX_INV_POSITION_DATA_STRUCT_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_EDX_INV_POSITION_DATA_STRUCT_STR-MANDT sy-vline 
WA_EDX_INV_POSITION_DATA_STRUCT_STR-RBLGP sy-vline 
WA_EDX_INV_POSITION_DATA_STRUCT_STR-WRBTR sy-vline 
WA_EDX_INV_POSITION_DATA_STRUCT_STR-MENGE sy-vline 
WA_EDX_INV_POSITION_DATA_STRUCT_STR-MEINS sy-vline 
WA_EDX_INV_POSITION_DATA_STRUCT_STR-IDNLF sy-vline 
WA_EDX_INV_POSITION_DATA_STRUCT_STR-TXZ01 sy-vline 
WA_EDX_INV_POSITION_DATA_STRUCT_STR-NETPR sy-vline 
WA_EDX_INV_POSITION_DATA_STRUCT_STR-MWSKZ sy-vline 
WA_EDX_INV_POSITION_DATA_STRUCT_STR-EBELN sy-vline 
WA_EDX_INV_POSITION_DATA_STRUCT_STR-EBELP sy-vline 
WA_EDX_INV_POSITION_DATA_STRUCT_STR-XBLNR sy-vline 
WA_EDX_INV_POSITION_DATA_STRUCT_STR-WAERS sy-vline 
WA_EDX_INV_POSITION_DATA_STRUCT_STR-KALSM sy-vline 
WA_EDX_INV_POSITION_DATA_STRUCT_STR-SELKZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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