ABAP Select data from SAP table WOSI_UMB_ITEM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WOSI_UMB_ITEM
*  INTO TABLE @DATA(IT_WOSI_UMB_ITEM2).
*--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_WOSI_UMB_ITEM INDEX 1 INTO DATA(WA_WOSI_UMB_ITEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WOSI_UMB_ITEM>-ZEILE = 1.
<WOSI_UMB_ITEM>-ZEILE1 = 1.
<WOSI_UMB_ITEM>-ZEILE2 = 1.
<WOSI_UMB_ITEM>-MATKL = 1.
<WOSI_UMB_ITEM>-MATNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WOSI_UMB_ITEM-WGBEZ, sy-vline,
  WA_WOSI_UMB_ITEM-MAKTX, sy-vline,
  WA_WOSI_UMB_ITEM-LGORT, sy-vline,
  WA_WOSI_UMB_ITEM-LGOBE, sy-vline,
  WA_WOSI_UMB_ITEM-VPNEU, sy-vline,
  WA_WOSI_UMB_ITEM-VPALT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WOSI_UMB_ITEM 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_WOSI_UMB_ITEM 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_WOSI_UMB_ITEM INTO WA_WOSI_UMB_ITEM.


*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_WOSI_UMB_ITEM-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WOSI_UMB_ITEM-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VRKME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_WOSI_UMB_ITEM-VRKME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WOSI_UMB_ITEM-VRKME.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit GJAHR, internal->external for field UBJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_WOSI_UMB_ITEM-UBJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WOSI_UMB_ITEM-UBJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AKTION
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WOSI_UMB_ITEM-AKTION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WOSI_UMB_ITEM-AKTION.
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_WOSI_UMB_ITEM_STR, 
ZEILE TYPE STRING,
ZEILE1 TYPE STRING,
ZEILE2 TYPE STRING,
MATKL TYPE STRING,
MATNR TYPE STRING,
WGBEZ TYPE STRING,
MAKTX TYPE STRING,
LGORT TYPE STRING,
LGOBE TYPE STRING,
VPNEU TYPE STRING,
VPALT TYPE STRING,
VRKPE TYPE STRING,
VRKME TYPE STRING,
VWAER TYPE STRING,
UBLNR TYPE STRING,
UBJAHR TYPE STRING,
UZEIL TYPE STRING,
AKTION TYPE STRING,
VKUMG TYPE STRING,
VKUMG_EXTERN TYPE STRING,
MESSAGE TYPE STRING,
IAC_STAT TYPE STRING,
UPSTA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WOSI_UMB_ITEM_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_WOSI_UMB_ITEM_STR-ZEILE sy-vline 
WA_WOSI_UMB_ITEM_STR-ZEILE1 sy-vline 
WA_WOSI_UMB_ITEM_STR-ZEILE2 sy-vline 
WA_WOSI_UMB_ITEM_STR-MATKL sy-vline 
WA_WOSI_UMB_ITEM_STR-MATNR sy-vline 
WA_WOSI_UMB_ITEM_STR-WGBEZ sy-vline 
WA_WOSI_UMB_ITEM_STR-MAKTX sy-vline 
WA_WOSI_UMB_ITEM_STR-LGORT sy-vline 
WA_WOSI_UMB_ITEM_STR-LGOBE sy-vline 
WA_WOSI_UMB_ITEM_STR-VPNEU sy-vline 
WA_WOSI_UMB_ITEM_STR-VPALT sy-vline 
WA_WOSI_UMB_ITEM_STR-VRKPE sy-vline 
WA_WOSI_UMB_ITEM_STR-VRKME sy-vline 
WA_WOSI_UMB_ITEM_STR-VWAER sy-vline 
WA_WOSI_UMB_ITEM_STR-UBLNR sy-vline 
WA_WOSI_UMB_ITEM_STR-UBJAHR sy-vline 
WA_WOSI_UMB_ITEM_STR-UZEIL sy-vline 
WA_WOSI_UMB_ITEM_STR-AKTION sy-vline 
WA_WOSI_UMB_ITEM_STR-VKUMG sy-vline 
WA_WOSI_UMB_ITEM_STR-VKUMG_EXTERN sy-vline 
WA_WOSI_UMB_ITEM_STR-MESSAGE sy-vline 
WA_WOSI_UMB_ITEM_STR-IAC_STAT sy-vline 
WA_WOSI_UMB_ITEM_STR-UPSTA sy-vline      INTO ld_text SEPARATED BY SPACE.

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