ABAP Select data from SAP table V_OIU_ME_RTCH into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_OIU_ME_RTCH
*  INTO TABLE @DATA(IT_V_OIU_ME_RTCH2).
*--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_V_OIU_ME_RTCH INDEX 1 INTO DATA(WA_V_OIU_ME_RTCH2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_OIU_ME_RTCH>-MANDT = 1.
<V_OIU_ME_RTCH>-RETYP = 1.
<V_OIU_ME_RTCH>-UOMGR = 1.
<V_OIU_ME_RTCH>-RTTXT = 1.
<V_OIU_ME_RTCH>-MEINS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_OIU_ME_RTCH-MSEHL, sy-vline,
  WA_V_OIU_ME_RTCH-XUOMC, sy-vline,
  WA_V_OIU_ME_RTCH-XUOMR, sy-vline,
  WA_V_OIU_ME_RTCH-XNEGA, sy-vline,
  WA_V_OIU_ME_RTCH-REFMT, sy-vline,
  WA_V_OIU_ME_RTCH-DIMID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_OIU_ME_RTCH 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_V_OIU_ME_RTCH 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_V_OIU_ME_RTCH INTO WA_V_OIU_ME_RTCH.


*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_V_OIU_ME_RTCH-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_OIU_ME_RTCH-MEINS.
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_V_OIU_ME_RTCH_STR, 
MANDT TYPE STRING,
RETYP TYPE STRING,
UOMGR TYPE STRING,
RTTXT TYPE STRING,
MEINS TYPE STRING,
MSEHL TYPE STRING,
XUOMC TYPE STRING,
XUOMR TYPE STRING,
XNEGA TYPE STRING,
REFMT TYPE STRING,
DIMID TYPE STRING,
DECAN TYPE STRING,
RDFMT TYPE STRING,
RDLEN TYPE STRING,
RDDEC TYPE STRING,
XRNDG TYPE STRING,
RFACT_RT TYPE STRING,
VLMIN_W TYPE STRING,
VLMIN_E TYPE STRING,
VLMAX_W TYPE STRING,
VLMAX_E TYPE STRING,
XVWRN TYPE STRING,
XVERR TYPE STRING,
VLDEF_F TYPE STRING,
VLDEF_C TYPE STRING,
VLDEF_D TYPE STRING,
VLDEF_T TYPE STRING,
XVDEF TYPE STRING,
TABNM TYPE STRING,
FLDNM TYPE STRING,
DOMNM TYPE STRING,
SHELP TYPE STRING,
SPARM TYPE STRING,
DESCR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_OIU_ME_RTCH_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_V_OIU_ME_RTCH_STR-MANDT sy-vline 
WA_V_OIU_ME_RTCH_STR-RETYP sy-vline 
WA_V_OIU_ME_RTCH_STR-UOMGR sy-vline 
WA_V_OIU_ME_RTCH_STR-RTTXT sy-vline 
WA_V_OIU_ME_RTCH_STR-MEINS sy-vline 
WA_V_OIU_ME_RTCH_STR-MSEHL sy-vline 
WA_V_OIU_ME_RTCH_STR-XUOMC sy-vline 
WA_V_OIU_ME_RTCH_STR-XUOMR sy-vline 
WA_V_OIU_ME_RTCH_STR-XNEGA sy-vline 
WA_V_OIU_ME_RTCH_STR-REFMT sy-vline 
WA_V_OIU_ME_RTCH_STR-DIMID sy-vline 
WA_V_OIU_ME_RTCH_STR-DECAN sy-vline 
WA_V_OIU_ME_RTCH_STR-RDFMT sy-vline 
WA_V_OIU_ME_RTCH_STR-RDLEN sy-vline 
WA_V_OIU_ME_RTCH_STR-RDDEC sy-vline 
WA_V_OIU_ME_RTCH_STR-XRNDG sy-vline 
WA_V_OIU_ME_RTCH_STR-RFACT_RT sy-vline 
WA_V_OIU_ME_RTCH_STR-VLMIN_W sy-vline 
WA_V_OIU_ME_RTCH_STR-VLMIN_E sy-vline 
WA_V_OIU_ME_RTCH_STR-VLMAX_W sy-vline 
WA_V_OIU_ME_RTCH_STR-VLMAX_E sy-vline 
WA_V_OIU_ME_RTCH_STR-XVWRN sy-vline 
WA_V_OIU_ME_RTCH_STR-XVERR sy-vline 
WA_V_OIU_ME_RTCH_STR-VLDEF_F sy-vline 
WA_V_OIU_ME_RTCH_STR-VLDEF_C sy-vline 
WA_V_OIU_ME_RTCH_STR-VLDEF_D sy-vline 
WA_V_OIU_ME_RTCH_STR-VLDEF_T sy-vline 
WA_V_OIU_ME_RTCH_STR-XVDEF sy-vline 
WA_V_OIU_ME_RTCH_STR-TABNM sy-vline 
WA_V_OIU_ME_RTCH_STR-FLDNM sy-vline 
WA_V_OIU_ME_RTCH_STR-DOMNM sy-vline 
WA_V_OIU_ME_RTCH_STR-SHELP sy-vline 
WA_V_OIU_ME_RTCH_STR-SPARM sy-vline 
WA_V_OIU_ME_RTCH_STR-DESCR sy-vline      INTO ld_text SEPARATED BY SPACE.

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