ABAP Select data from SAP table VLCVTRANSFERCOM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VLCVTRANSFERCOM
*  INTO TABLE @DATA(IT_VLCVTRANSFERCOM2).
*--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_VLCVTRANSFERCOM INDEX 1 INTO DATA(WA_VLCVTRANSFERCOM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VLCVTRANSFERCOM>-MANDT = 1.
<VLCVTRANSFERCOM>-TRGUID = 1.
<VLCVTRANSFERCOM>-DVGUID = 1.
<VLCVTRANSFERCOM>-DVDEALER = 1.
<VLCVTRANSFERCOM>-RQDEALER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VLCVTRANSFERCOM-RQDEALWERKS, sy-vline,
  WA_VLCVTRANSFERCOM-TRANSSTAT, sy-vline,
  WA_VLCVTRANSFERCOM-TIMESTAMP, sy-vline,
  WA_VLCVTRANSFERCOM-RQDEALNAM, sy-vline,
  WA_VLCVTRANSFERCOM-DVDEALNAM, sy-vline,
  WA_VLCVTRANSFERCOM-TRANSSTATT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VLCVTRANSFERCOM 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_VLCVTRANSFERCOM 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_VLCVTRANSFERCOM INTO WA_VLCVTRANSFERCOM.


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

*Conversion exit ALPHA, internal->external for field RQDEALER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VLCVTRANSFERCOM-RQDEALER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VLCVTRANSFERCOM-RQDEALER.
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_VLCVTRANSFERCOM_STR, 
MANDT TYPE STRING,
TRGUID TYPE STRING,
DVGUID TYPE STRING,
DVDEALER TYPE STRING,
RQDEALER TYPE STRING,
RQDEALWERKS TYPE STRING,
TRANSSTAT TYPE STRING,
TIMESTAMP TYPE STRING,
RQDEALNAM TYPE STRING,
DVDEALNAM TYPE STRING,
TRANSSTATT TYPE STRING,
TRDATE TYPE STRING,
TRTIME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VLCVTRANSFERCOM_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_VLCVTRANSFERCOM_STR-MANDT sy-vline 
WA_VLCVTRANSFERCOM_STR-TRGUID sy-vline 
WA_VLCVTRANSFERCOM_STR-DVGUID sy-vline 
WA_VLCVTRANSFERCOM_STR-DVDEALER sy-vline 
WA_VLCVTRANSFERCOM_STR-RQDEALER sy-vline 
WA_VLCVTRANSFERCOM_STR-RQDEALWERKS sy-vline 
WA_VLCVTRANSFERCOM_STR-TRANSSTAT sy-vline 
WA_VLCVTRANSFERCOM_STR-TIMESTAMP sy-vline 
WA_VLCVTRANSFERCOM_STR-RQDEALNAM sy-vline 
WA_VLCVTRANSFERCOM_STR-DVDEALNAM sy-vline 
WA_VLCVTRANSFERCOM_STR-TRANSSTATT sy-vline 
WA_VLCVTRANSFERCOM_STR-TRDATE sy-vline 
WA_VLCVTRANSFERCOM_STR-TRTIME sy-vline      INTO ld_text SEPARATED BY SPACE.

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