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

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /CEECV/BEFI_VAT_DOC
*  INTO TABLE @DATA(IT_/CEECV/BEFI_VAT_DOC2).
*--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/BEFI_VAT_DOC INDEX 1 INTO DATA(WA_/CEECV/BEFI_VAT_DOC2).


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

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

ENDLOOP.

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

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


*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/BEFI_VAT_DOC-BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/CEECV/BEFI_VAT_DOC-BELNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

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

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

*Conversion exit AU132, internal->external for field HWBASO
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_/CEECV/BEFI_VAT_DOC-HWBASO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/CEECV/BEFI_VAT_DOC-HWBASO.
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/BEFI_VAT_DOC_STR, 
MANDT TYPE STRING,
LAUFI TYPE STRING,
LAUFD TYPE STRING,
BUKRS TYPE STRING,
BELNR TYPE STRING,
GJAHR TYPE STRING,
BUZEI TYPE STRING,
MONAT 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,
NUMMR TYPE STRING,
STCEG TYPE STRING,
KTOSL TYPE STRING,
BKTXT TYPE STRING,
HWBAS TYPE STRING,
HWSTE TYPE STRING,
HWAER TYPE STRING,
FWBAS TYPE STRING,
FWSTE TYPE STRING,
FWAER TYPE STRING,
MWART TYPE STRING,
PSATZ TYPE STRING,
LIMIT TYPE STRING,
HWSTEAA TYPE STRING,
HWNAF TYPE STRING,
HWBASO TYPE STRING,
TBUKRS TYPE STRING,
UBUKRS TYPE STRING,
UMKRS TYPE STRING,
LAND1 TYPE STRING,
ICA_FLAG TYPE STRING,
GL_FLAG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/CEECV/BEFI_VAT_DOC_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/BEFI_VAT_DOC_STR-MANDT sy-vline 
WA_/CEECV/BEFI_VAT_DOC_STR-LAUFI sy-vline 
WA_/CEECV/BEFI_VAT_DOC_STR-LAUFD sy-vline 
WA_/CEECV/BEFI_VAT_DOC_STR-BUKRS sy-vline 
WA_/CEECV/BEFI_VAT_DOC_STR-BELNR sy-vline 
WA_/CEECV/BEFI_VAT_DOC_STR-GJAHR sy-vline 
WA_/CEECV/BEFI_VAT_DOC_STR-BUZEI sy-vline 
WA_/CEECV/BEFI_VAT_DOC_STR-MONAT sy-vline 
WA_/CEECV/BEFI_VAT_DOC_STR-BLART sy-vline 
WA_/CEECV/BEFI_VAT_DOC_STR-BLDAT sy-vline 
WA_/CEECV/BEFI_VAT_DOC_STR-BUDAT sy-vline 
WA_/CEECV/BEFI_VAT_DOC_STR-VATDATE sy-vline 
WA_/CEECV/BEFI_VAT_DOC_STR-XBLNR sy-vline 
WA_/CEECV/BEFI_VAT_DOC_STR-MWSKZ sy-vline 
WA_/CEECV/BEFI_VAT_DOC_STR-SHKZG sy-vline 
WA_/CEECV/BEFI_VAT_DOC_STR-KOART sy-vline 
WA_/CEECV/BEFI_VAT_DOC_STR-NUMMR sy-vline 
WA_/CEECV/BEFI_VAT_DOC_STR-STCEG sy-vline 
WA_/CEECV/BEFI_VAT_DOC_STR-KTOSL sy-vline 
WA_/CEECV/BEFI_VAT_DOC_STR-BKTXT sy-vline 
WA_/CEECV/BEFI_VAT_DOC_STR-HWBAS sy-vline 
WA_/CEECV/BEFI_VAT_DOC_STR-HWSTE sy-vline 
WA_/CEECV/BEFI_VAT_DOC_STR-HWAER sy-vline 
WA_/CEECV/BEFI_VAT_DOC_STR-FWBAS sy-vline 
WA_/CEECV/BEFI_VAT_DOC_STR-FWSTE sy-vline 
WA_/CEECV/BEFI_VAT_DOC_STR-FWAER sy-vline 
WA_/CEECV/BEFI_VAT_DOC_STR-MWART sy-vline 
WA_/CEECV/BEFI_VAT_DOC_STR-PSATZ sy-vline 
WA_/CEECV/BEFI_VAT_DOC_STR-LIMIT sy-vline 
WA_/CEECV/BEFI_VAT_DOC_STR-HWSTEAA sy-vline 
WA_/CEECV/BEFI_VAT_DOC_STR-HWNAF sy-vline 
WA_/CEECV/BEFI_VAT_DOC_STR-HWBASO sy-vline 
WA_/CEECV/BEFI_VAT_DOC_STR-TBUKRS sy-vline 
WA_/CEECV/BEFI_VAT_DOC_STR-UBUKRS sy-vline 
WA_/CEECV/BEFI_VAT_DOC_STR-UMKRS sy-vline 
WA_/CEECV/BEFI_VAT_DOC_STR-LAND1 sy-vline 
WA_/CEECV/BEFI_VAT_DOC_STR-ICA_FLAG sy-vline 
WA_/CEECV/BEFI_VAT_DOC_STR-GL_FLAG sy-vline      INTO ld_text SEPARATED BY SPACE.

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