ABAP Select data from SAP table IEWMPILOGITEM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IEWMPILOGITEM
*  INTO TABLE @DATA(IT_IEWMPILOGITEM2).
*--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_IEWMPILOGITEM INDEX 1 INTO DATA(WA_IEWMPILOGITEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IEWMPILOGITEM>-MANDT = 1.
<IEWMPILOGITEM>-PHYSICALINVENTORYDOCUMENTUUID = 1.
<IEWMPILOGITEM>-PHYSICALINVENTORYITEMNUMBER = 1.
<IEWMPILOGITEM>-PHYSICALINVENTORYLOGTYPE = 1.
<IEWMPILOGITEM>-PHYSICALINVENTORYLOGSEQUENCE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IEWMPILOGITEM-PINVLOGITEMTIMESTAMP, sy-vline,
  WA_IEWMPILOGITEM-PHYSICALINVENTORYLOGBYUSERNAME, sy-vline,
  WA_IEWMPILOGITEM-PHYSICALINVENTORYPROCESSTYPE, sy-vline,
  WA_IEWMPILOGITEM-PHYSICALINVENTORYREFDOCNUMBER, sy-vline,
  WA_IEWMPILOGITEM-PHYSICALINVENTORYREFDOCTYPE, sy-vline,
  WA_IEWMPILOGITEM-PINVREFDOCLOGSYSTEM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IEWMPILOGITEM 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_IEWMPILOGITEM 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_IEWMPILOGITEM INTO WA_IEWMPILOGITEM.


*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 PINVREFDOCLOGSYSTEM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IEWMPILOGITEM-PINVREFDOCLOGSYSTEM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IEWMPILOGITEM-PINVREFDOCLOGSYSTEM.
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_IEWMPILOGITEM_STR, 
MANDT TYPE STRING,
PHYSICALINVENTORYDOCUMENTUUID TYPE STRING,
PHYSICALINVENTORYITEMNUMBER TYPE STRING,
PHYSICALINVENTORYLOGTYPE TYPE STRING,
PHYSICALINVENTORYLOGSEQUENCE TYPE STRING,
PINVLOGITEMTIMESTAMP TYPE STRING,
PHYSICALINVENTORYLOGBYUSERNAME TYPE STRING,
PHYSICALINVENTORYPROCESSTYPE TYPE STRING,
PHYSICALINVENTORYREFDOCNUMBER TYPE STRING,
PHYSICALINVENTORYREFDOCTYPE TYPE STRING,
PINVREFDOCLOGSYSTEM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IEWMPILOGITEM_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_IEWMPILOGITEM_STR-MANDT sy-vline 
WA_IEWMPILOGITEM_STR-PHYSICALINVENTORYDOCUMENTUUID sy-vline 
WA_IEWMPILOGITEM_STR-PHYSICALINVENTORYITEMNUMBER sy-vline 
WA_IEWMPILOGITEM_STR-PHYSICALINVENTORYLOGTYPE sy-vline 
WA_IEWMPILOGITEM_STR-PHYSICALINVENTORYLOGSEQUENCE sy-vline 
WA_IEWMPILOGITEM_STR-PINVLOGITEMTIMESTAMP sy-vline 
WA_IEWMPILOGITEM_STR-PHYSICALINVENTORYLOGBYUSERNAME sy-vline 
WA_IEWMPILOGITEM_STR-PHYSICALINVENTORYPROCESSTYPE sy-vline 
WA_IEWMPILOGITEM_STR-PHYSICALINVENTORYREFDOCNUMBER sy-vline 
WA_IEWMPILOGITEM_STR-PHYSICALINVENTORYREFDOCTYPE sy-vline 
WA_IEWMPILOGITEM_STR-PINVREFDOCLOGSYSTEM sy-vline      INTO ld_text SEPARATED BY SPACE.

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