ABAP Select data from SAP table /CEECV/BVFI_PVN into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /CEECV/BVFI_PVN 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 /CEECV/BVFI_PVN. 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 /CEECV/BVFI_PVN 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_/CEECV/BVFI_PVN TYPE STANDARD TABLE OF /CEECV/BVFI_PVN,
      WA_/CEECV/BVFI_PVN TYPE /CEECV/BVFI_PVN,
      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: </CEECV/BVFI_PVN> TYPE /CEECV/BVFI_PVN.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /CEECV/BVFI_PVN
  INTO TABLE IT_/CEECV/BVFI_PVN.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /CEECV/BVFI_PVN
*  INTO TABLE @DATA(IT_/CEECV/BVFI_PVN2).
*--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_/CEECV/BVFI_PVN INDEX 1 INTO DATA(WA_/CEECV/BVFI_PVN2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/CEECV/BVFI_PVN ASSIGNING </CEECV/BVFI_PVN>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</CEECV/BVFI_PVN>-MANDT = 1.
</CEECV/BVFI_PVN>-LAUFD = 1.
</CEECV/BVFI_PVN>-LAUFI = 1.
</CEECV/BVFI_PVN>-BUKRS = 1.
</CEECV/BVFI_PVN>-BELNR = 1.

ENDLOOP.

LOOP AT IT_/CEECV/BVFI_PVN INTO WA_/CEECV/BVFI_PVN.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/CEECV/BVFI_PVN-GJAHR, sy-vline,
  WA_/CEECV/BVFI_PVN-BUZEI, sy-vline,
  WA_/CEECV/BVFI_PVN-BLART, sy-vline,
  WA_/CEECV/BVFI_PVN-BLDAT, sy-vline,
  WA_/CEECV/BVFI_PVN-BUDAT, sy-vline,
  WA_/CEECV/BVFI_PVN-VATDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/CEECV/BVFI_PVN 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_/CEECV/BVFI_PVN 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_/CEECV/BVFI_PVN INTO WA_/CEECV/BVFI_PVN.


*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 BELNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/CEECV/BVFI_PVN-BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/CEECV/BVFI_PVN-BELNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_/CEECV/BVFI_PVN-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/CEECV/BVFI_PVN-GJAHR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit AU132, internal->external for field HWBAS
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_/CEECV/BVFI_PVN-HWBAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/CEECV/BVFI_PVN-HWBAS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field HWSTE
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_/CEECV/BVFI_PVN-HWSTE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/CEECV/BVFI_PVN-HWSTE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field FWBAS
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_/CEECV/BVFI_PVN-FWBAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/CEECV/BVFI_PVN-FWBAS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field FWSTE
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_/CEECV/BVFI_PVN-FWSTE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/CEECV/BVFI_PVN-FWSTE.
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_/CEECV/BVFI_PVN_STR, 
MANDT TYPE STRING,
LAUFD TYPE STRING,
LAUFI TYPE STRING,
BUKRS TYPE STRING,
BELNR TYPE STRING,
GJAHR TYPE STRING,
BUZEI TYPE STRING,
BLART TYPE STRING,
BLDAT TYPE STRING,
BUDAT TYPE STRING,
VATDATE TYPE STRING,
XBLNR TYPE STRING,
MWSKZ TYPE STRING,
SHKZG TYPE STRING,
KOART TYPE STRING,
LIFNR TYPE STRING,
STCEG TYPE STRING,
KTOSL TYPE STRING,
HWBAS TYPE STRING,
HWSTE TYPE STRING,
HWAER TYPE STRING,
FWBAS TYPE STRING,
FWSTE TYPE STRING,
WAERS TYPE STRING,
UMSVDYEA TYPE STRING,
UMSVDPER TYPE STRING,
UMSKS TYPE STRING,
AWTYP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/CEECV/BVFI_PVN_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_/CEECV/BVFI_PVN_STR-MANDT sy-vline 
WA_/CEECV/BVFI_PVN_STR-LAUFD sy-vline 
WA_/CEECV/BVFI_PVN_STR-LAUFI sy-vline 
WA_/CEECV/BVFI_PVN_STR-BUKRS sy-vline 
WA_/CEECV/BVFI_PVN_STR-BELNR sy-vline 
WA_/CEECV/BVFI_PVN_STR-GJAHR sy-vline 
WA_/CEECV/BVFI_PVN_STR-BUZEI sy-vline 
WA_/CEECV/BVFI_PVN_STR-BLART sy-vline 
WA_/CEECV/BVFI_PVN_STR-BLDAT sy-vline 
WA_/CEECV/BVFI_PVN_STR-BUDAT sy-vline 
WA_/CEECV/BVFI_PVN_STR-VATDATE sy-vline 
WA_/CEECV/BVFI_PVN_STR-XBLNR sy-vline 
WA_/CEECV/BVFI_PVN_STR-MWSKZ sy-vline 
WA_/CEECV/BVFI_PVN_STR-SHKZG sy-vline 
WA_/CEECV/BVFI_PVN_STR-KOART sy-vline 
WA_/CEECV/BVFI_PVN_STR-LIFNR sy-vline 
WA_/CEECV/BVFI_PVN_STR-STCEG sy-vline 
WA_/CEECV/BVFI_PVN_STR-KTOSL sy-vline 
WA_/CEECV/BVFI_PVN_STR-HWBAS sy-vline 
WA_/CEECV/BVFI_PVN_STR-HWSTE sy-vline 
WA_/CEECV/BVFI_PVN_STR-HWAER sy-vline 
WA_/CEECV/BVFI_PVN_STR-FWBAS sy-vline 
WA_/CEECV/BVFI_PVN_STR-FWSTE sy-vline 
WA_/CEECV/BVFI_PVN_STR-WAERS sy-vline 
WA_/CEECV/BVFI_PVN_STR-UMSVDYEA sy-vline 
WA_/CEECV/BVFI_PVN_STR-UMSVDPER sy-vline 
WA_/CEECV/BVFI_PVN_STR-UMSKS sy-vline 
WA_/CEECV/BVFI_PVN_STR-AWTYP sy-vline      INTO ld_text SEPARATED BY SPACE.

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