ABAP Select data from SAP table V_RTC_VD_METHOD into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP V_RTC_VD_METHOD 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_RTC_VD_METHOD. 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_RTC_VD_METHOD 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_RTC_VD_METHOD TYPE STANDARD TABLE OF V_RTC_VD_METHOD,
      WA_V_RTC_VD_METHOD TYPE V_RTC_VD_METHOD,
      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_RTC_VD_METHOD> TYPE V_RTC_VD_METHOD.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_RTC_VD_METHOD
*  INTO TABLE @DATA(IT_V_RTC_VD_METHOD2).
*--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_RTC_VD_METHOD INDEX 1 INTO DATA(WA_V_RTC_VD_METHOD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_RTC_VD_METHOD>-MANDT = 1.
<V_RTC_VD_METHOD>-MODEL = 1.
<V_RTC_VD_METHOD>-STATE = 1.
<V_RTC_VD_METHOD>-METHOD = 1.
<V_RTC_VD_METHOD>-DESCM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_RTC_VD_METHOD-DESCS, sy-vline,
  WA_V_RTC_VD_METHOD-DESCL, sy-vline,
  WA_V_RTC_VD_METHOD-MTYPE, sy-vline,
  WA_V_RTC_VD_METHOD-EXECM, sy-vline,
  WA_V_RTC_VD_METHOD-VERSION, sy-vline,
  WA_V_RTC_VD_METHOD-CREATEDBY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_RTC_VD_METHOD 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_RTC_VD_METHOD 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_RTC_VD_METHOD INTO WA_V_RTC_VD_METHOD.


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

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

*Conversion exit ALPHA, internal->external for field VM_CATEGORY
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_RTC_VD_METHOD-VM_CATEGORY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_RTC_VD_METHOD-VM_CATEGORY.
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_RTC_VD_METHOD_STR, 
MANDT TYPE STRING,
MODEL TYPE STRING,
STATE TYPE STRING,
METHOD TYPE STRING,
DESCM TYPE STRING,
DESCS TYPE STRING,
DESCL TYPE STRING,
MTYPE TYPE STRING,
EXECM TYPE STRING,
VERSION TYPE STRING,
CREATEDBY TYPE STRING,
CREATEDAT TYPE STRING,
CHANGEDBY TYPE STRING,
CHANGEDAT TYPE STRING,
BLART TYPE STRING,
VMP_SET_NAME TYPE STRING,
VM_CATEGORY TYPE STRING,
OUTPUT_STRUCTURE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_RTC_VD_METHOD_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_RTC_VD_METHOD_STR-MANDT sy-vline 
WA_V_RTC_VD_METHOD_STR-MODEL sy-vline 
WA_V_RTC_VD_METHOD_STR-STATE sy-vline 
WA_V_RTC_VD_METHOD_STR-METHOD sy-vline 
WA_V_RTC_VD_METHOD_STR-DESCM sy-vline 
WA_V_RTC_VD_METHOD_STR-DESCS sy-vline 
WA_V_RTC_VD_METHOD_STR-DESCL sy-vline 
WA_V_RTC_VD_METHOD_STR-MTYPE sy-vline 
WA_V_RTC_VD_METHOD_STR-EXECM sy-vline 
WA_V_RTC_VD_METHOD_STR-VERSION sy-vline 
WA_V_RTC_VD_METHOD_STR-CREATEDBY sy-vline 
WA_V_RTC_VD_METHOD_STR-CREATEDAT sy-vline 
WA_V_RTC_VD_METHOD_STR-CHANGEDBY sy-vline 
WA_V_RTC_VD_METHOD_STR-CHANGEDAT sy-vline 
WA_V_RTC_VD_METHOD_STR-BLART sy-vline 
WA_V_RTC_VD_METHOD_STR-VMP_SET_NAME sy-vline 
WA_V_RTC_VD_METHOD_STR-VM_CATEGORY sy-vline 
WA_V_RTC_VD_METHOD_STR-OUTPUT_STRUCTURE sy-vline      INTO ld_text SEPARATED BY SPACE.

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