ABAP Select data from SAP table V_EDSCH into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP V_EDSCH 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_EDSCH. 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_EDSCH 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_EDSCH TYPE STANDARD TABLE OF V_EDSCH,
      WA_V_EDSCH TYPE V_EDSCH,
      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_EDSCH> TYPE V_EDSCH.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_EDSCH
*  INTO TABLE @DATA(IT_V_EDSCH2).
*--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_EDSCH INDEX 1 INTO DATA(WA_V_EDSCH2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_EDSCH>-MANDT = 1.
<V_EDSCH>-RABZUS = 1.
<V_EDSCH>-AB = 1.
<V_EDSCH>-TWAERS = 1.
<V_EDSCH>-BIS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_EDSCH-RABPROZ, sy-vline,
  WA_V_EDSCH-RABMENGE, sy-vline,
  WA_V_EDSCH-RABPREIS, sy-vline,
  WA_V_EDSCH-RABBETRAG, sy-vline,
  WA_V_EDSCH-RABLEISTUNG, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_V_EDSCH 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_EDSCH 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_EDSCH INTO WA_V_EDSCH.


*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 RABZUS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_EDSCH-RABZUS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_EDSCH-RABZUS.
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_EDSCH_STR, 
MANDT TYPE STRING,
RABZUS TYPE STRING,
AB TYPE STRING,
TWAERS TYPE STRING,
BIS TYPE STRING,
RABPROZ TYPE STRING,
RABMENGE TYPE STRING,
RABPREIS TYPE STRING,
RABBETRAG TYPE STRING,
RABLEISTUNG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_EDSCH_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_EDSCH_STR-MANDT sy-vline 
WA_V_EDSCH_STR-RABZUS sy-vline 
WA_V_EDSCH_STR-AB sy-vline 
WA_V_EDSCH_STR-TWAERS sy-vline 
WA_V_EDSCH_STR-BIS sy-vline 
WA_V_EDSCH_STR-RABPROZ sy-vline 
WA_V_EDSCH_STR-RABMENGE sy-vline 
WA_V_EDSCH_STR-RABPREIS sy-vline 
WA_V_EDSCH_STR-RABBETRAG sy-vline 
WA_V_EDSCH_STR-RABLEISTUNG sy-vline      INTO ld_text SEPARATED BY SPACE.

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