ABAP Select data from SAP table V_CORTYP into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP V_CORTYP 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_CORTYP. 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_CORTYP 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_CORTYP TYPE STANDARD TABLE OF V_CORTYP,
      WA_V_CORTYP TYPE V_CORTYP,
      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_CORTYP> TYPE V_CORTYP.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_CORTYP
*  INTO TABLE @DATA(IT_V_CORTYP2).
*--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_CORTYP INDEX 1 INTO DATA(WA_V_CORTYP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_CORTYP>-MANDT = 1.
<V_CORTYP>-CORTYP = 1.
<V_CORTYP>-XCORTYP = 1.
<V_CORTYP>-ROLETYP = 1.
<V_CORTYP>-INTERN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_CORTYP-ARCHIVE, sy-vline,
  WA_V_CORTYP-LANGU, sy-vline,
  WA_V_CORTYP-SNOREVERSAL, sy-vline,
  WA_V_CORTYP-PARNUM, sy-vline,
  WA_V_CORTYP-PARTYP, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_V_CORTYP 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_CORTYP 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_CORTYP INTO WA_V_CORTYP.


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

*Conversion exit ALPHA, internal->external for field PARNUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_CORTYP-PARNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_CORTYP-PARNUM.
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_CORTYP_STR, 
MANDT TYPE STRING,
CORTYP TYPE STRING,
XCORTYP TYPE STRING,
ROLETYP TYPE STRING,
INTERN TYPE STRING,
ARCHIVE TYPE STRING,
LANGU TYPE STRING,
SNOREVERSAL TYPE STRING,
PARNUM TYPE STRING,
PARTYP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_CORTYP_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_CORTYP_STR-MANDT sy-vline 
WA_V_CORTYP_STR-CORTYP sy-vline 
WA_V_CORTYP_STR-XCORTYP sy-vline 
WA_V_CORTYP_STR-ROLETYP sy-vline 
WA_V_CORTYP_STR-INTERN sy-vline 
WA_V_CORTYP_STR-ARCHIVE sy-vline 
WA_V_CORTYP_STR-LANGU sy-vline 
WA_V_CORTYP_STR-SNOREVERSAL sy-vline 
WA_V_CORTYP_STR-PARNUM sy-vline 
WA_V_CORTYP_STR-PARTYP sy-vline      INTO ld_text SEPARATED BY SPACE.

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