ABAP Select data from SAP table V_EDSC into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP V_EDSC 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_EDSC. 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_EDSC 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_EDSC TYPE STANDARD TABLE OF V_EDSC,
      WA_V_EDSC TYPE V_EDSC,
      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_EDSC> TYPE V_EDSC.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_EDSC
*  INTO TABLE @DATA(IT_V_EDSC2).
*--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_EDSC INDEX 1 INTO DATA(WA_V_EDSC2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_EDSC-TEXT30, sy-vline,
  WA_V_EDSC-LOEVM, sy-vline,
  WA_V_EDSC-SPARTE, sy-vline,
  WA_V_EDSC-RABTYP, sy-vline,
  WA_V_EDSC-BZGBASIS, sy-vline,
  WA_V_EDSC-RABART, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_EDSC 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_EDSC 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_EDSC INTO WA_V_EDSC.


*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_EDSC-RABZUS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_EDSC-RABZUS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field SPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_V_EDSC-SPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_EDSC-SPRAS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MASS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_V_EDSC-MASS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_EDSC-MASS.
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_EDSC_STR, 
MANDT TYPE STRING,
RABZUS TYPE STRING,
AB TYPE STRING,
SPRAS TYPE STRING,
TWAERS TYPE STRING,
TEXT30 TYPE STRING,
LOEVM TYPE STRING,
SPARTE TYPE STRING,
RABTYP TYPE STRING,
BZGBASIS TYPE STRING,
RABART TYPE STRING,
USE_REGIST TYPE STRING,
MASS TYPE STRING,
TIMBASIS TYPE STRING,
TIMTYP TYPE STRING,
ERDAT TYPE STRING,
ERNAM TYPE STRING,
AEDAT TYPE STRING,
AENAM TYPE STRING,
BEGRU TYPE STRING,
BIS TYPE STRING,
RABPROZ TYPE STRING,
RABMENGE TYPE STRING,
RABPREIS TYPE STRING,
RABBETRAG TYPE STRING,
AKLASSE TYPE STRING,
RABLEISTUNG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_EDSC_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_EDSC_STR-MANDT sy-vline 
WA_V_EDSC_STR-RABZUS sy-vline 
WA_V_EDSC_STR-AB sy-vline 
WA_V_EDSC_STR-SPRAS sy-vline 
WA_V_EDSC_STR-TWAERS sy-vline 
WA_V_EDSC_STR-TEXT30 sy-vline 
WA_V_EDSC_STR-LOEVM sy-vline 
WA_V_EDSC_STR-SPARTE sy-vline 
WA_V_EDSC_STR-RABTYP sy-vline 
WA_V_EDSC_STR-BZGBASIS sy-vline 
WA_V_EDSC_STR-RABART sy-vline 
WA_V_EDSC_STR-USE_REGIST sy-vline 
WA_V_EDSC_STR-MASS sy-vline 
WA_V_EDSC_STR-TIMBASIS sy-vline 
WA_V_EDSC_STR-TIMTYP sy-vline 
WA_V_EDSC_STR-ERDAT sy-vline 
WA_V_EDSC_STR-ERNAM sy-vline 
WA_V_EDSC_STR-AEDAT sy-vline 
WA_V_EDSC_STR-AENAM sy-vline 
WA_V_EDSC_STR-BEGRU sy-vline 
WA_V_EDSC_STR-BIS sy-vline 
WA_V_EDSC_STR-RABPROZ sy-vline 
WA_V_EDSC_STR-RABMENGE sy-vline 
WA_V_EDSC_STR-RABPREIS sy-vline 
WA_V_EDSC_STR-RABBETRAG sy-vline 
WA_V_EDSC_STR-AKLASSE sy-vline 
WA_V_EDSC_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.