ABAP Select data from SAP table OI0BW_NOMSUBITEM into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP OI0BW_NOMSUBITEM 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 OI0BW_NOMSUBITEM. 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 OI0BW_NOMSUBITEM 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_OI0BW_NOMSUBITEM TYPE STANDARD TABLE OF OI0BW_NOMSUBITEM,
      WA_OI0BW_NOMSUBITEM TYPE OI0BW_NOMSUBITEM,
      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: <OI0BW_NOMSUBITEM> TYPE OI0BW_NOMSUBITEM.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_OI0BW_NOMSUBITEM.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM OI0BW_NOMSUBITEM
  INTO TABLE IT_OI0BW_NOMSUBITEM.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM OI0BW_NOMSUBITEM
*  INTO TABLE @DATA(IT_OI0BW_NOMSUBITEM2).
*--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_OI0BW_NOMSUBITEM INDEX 1 INTO DATA(WA_OI0BW_NOMSUBITEM2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_OI0BW_NOMSUBITEM ASSIGNING <OI0BW_NOMSUBITEM>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<OI0BW_NOMSUBITEM>-ROCANCEL = 1.
<OI0BW_NOMSUBITEM>-NOMNR = 1.
<OI0BW_NOMSUBITEM>-NOMTK = 1.
<OI0BW_NOMSUBITEM>-NOMIT = 1.
<OI0BW_NOMSUBITEM>-SUBITEM = 1.

ENDLOOP.

LOOP AT IT_OI0BW_NOMSUBITEM INTO WA_OI0BW_NOMSUBITEM.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_OI0BW_NOMSUBITEM-NOMAPP, sy-vline,
  WA_OI0BW_NOMSUBITEM-PL_DATE, sy-vline,
  WA_OI0BW_NOMSUBITEM-LOCID, sy-vline,
  WA_OI0BW_NOMSUBITEM-TSYST, sy-vline,
  WA_OI0BW_NOMSUBITEM-MATNR_I, sy-vline,
  WA_OI0BW_NOMSUBITEM-SUBITM_QTY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_OI0BW_NOMSUBITEM 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_OI0BW_NOMSUBITEM 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_OI0BW_NOMSUBITEM INTO WA_OI0BW_NOMSUBITEM.


*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 NOMTK
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_OI0BW_NOMSUBITEM-NOMTK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OI0BW_NOMSUBITEM-NOMTK.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR_I
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_OI0BW_NOMSUBITEM-MATNR_I
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OI0BW_NOMSUBITEM-MATNR_I.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field SUBITM_UOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_OI0BW_NOMSUBITEM-SUBITM_UOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OI0BW_NOMSUBITEM-SUBITM_UOM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field SUBITM_ACTUOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_OI0BW_NOMSUBITEM-SUBITM_ACTUOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OI0BW_NOMSUBITEM-SUBITM_ACTUOM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DOCNR_M
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_OI0BW_NOMSUBITEM-DOCNR_M
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OI0BW_NOMSUBITEM-DOCNR_M.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PARTNER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_OI0BW_NOMSUBITEM-PARTNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OI0BW_NOMSUBITEM-PARTNER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field OWNER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_OI0BW_NOMSUBITEM-OWNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OI0BW_NOMSUBITEM-OWNER.
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_OI0BW_NOMSUBITEM_STR, 
ROCANCEL TYPE STRING,
NOMNR TYPE STRING,
NOMTK TYPE STRING,
NOMIT TYPE STRING,
SUBITEM TYPE STRING,
NOMAPP TYPE STRING,
PL_DATE TYPE STRING,
LOCID TYPE STRING,
TSYST TYPE STRING,
MATNR_I TYPE STRING,
SUBITM_QTY TYPE STRING,
SUBITM_UOM TYPE STRING,
SUBITM_ACTQTY TYPE STRING,
SUBITM_ACTUOM TYPE STRING,
STATUS TYPE STRING,
RAILCARID TYPE STRING,
RAIL_SPLIT_SEQ TYPE STRING,
RAILCAR_TYPE TYPE STRING,
COMPARTMENTID TYPE STRING,
BARGEID TYPE STRING,
DOCIND_M TYPE STRING,
DOCNR_M TYPE STRING,
DOCITM_M TYPE STRING,
PARTNER TYPE STRING,
TANK_NR TYPE STRING,
STOCKPILE_NR TYPE STRING,
CONT_NR TYPE STRING,
BATCH_NR TYPE STRING,
OWNER TYPE STRING,
VAL_TYP TYPE STRING,
BATCH_OWNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_OI0BW_NOMSUBITEM_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_OI0BW_NOMSUBITEM_STR-ROCANCEL sy-vline 
WA_OI0BW_NOMSUBITEM_STR-NOMNR sy-vline 
WA_OI0BW_NOMSUBITEM_STR-NOMTK sy-vline 
WA_OI0BW_NOMSUBITEM_STR-NOMIT sy-vline 
WA_OI0BW_NOMSUBITEM_STR-SUBITEM sy-vline 
WA_OI0BW_NOMSUBITEM_STR-NOMAPP sy-vline 
WA_OI0BW_NOMSUBITEM_STR-PL_DATE sy-vline 
WA_OI0BW_NOMSUBITEM_STR-LOCID sy-vline 
WA_OI0BW_NOMSUBITEM_STR-TSYST sy-vline 
WA_OI0BW_NOMSUBITEM_STR-MATNR_I sy-vline 
WA_OI0BW_NOMSUBITEM_STR-SUBITM_QTY sy-vline 
WA_OI0BW_NOMSUBITEM_STR-SUBITM_UOM sy-vline 
WA_OI0BW_NOMSUBITEM_STR-SUBITM_ACTQTY sy-vline 
WA_OI0BW_NOMSUBITEM_STR-SUBITM_ACTUOM sy-vline 
WA_OI0BW_NOMSUBITEM_STR-STATUS sy-vline 
WA_OI0BW_NOMSUBITEM_STR-RAILCARID sy-vline 
WA_OI0BW_NOMSUBITEM_STR-RAIL_SPLIT_SEQ sy-vline 
WA_OI0BW_NOMSUBITEM_STR-RAILCAR_TYPE sy-vline 
WA_OI0BW_NOMSUBITEM_STR-COMPARTMENTID sy-vline 
WA_OI0BW_NOMSUBITEM_STR-BARGEID sy-vline 
WA_OI0BW_NOMSUBITEM_STR-DOCIND_M sy-vline 
WA_OI0BW_NOMSUBITEM_STR-DOCNR_M sy-vline 
WA_OI0BW_NOMSUBITEM_STR-DOCITM_M sy-vline 
WA_OI0BW_NOMSUBITEM_STR-PARTNER sy-vline 
WA_OI0BW_NOMSUBITEM_STR-TANK_NR sy-vline 
WA_OI0BW_NOMSUBITEM_STR-STOCKPILE_NR sy-vline 
WA_OI0BW_NOMSUBITEM_STR-CONT_NR sy-vline 
WA_OI0BW_NOMSUBITEM_STR-BATCH_NR sy-vline 
WA_OI0BW_NOMSUBITEM_STR-OWNER sy-vline 
WA_OI0BW_NOMSUBITEM_STR-VAL_TYP sy-vline 
WA_OI0BW_NOMSUBITEM_STR-BATCH_OWNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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