ABAP Select data from SAP table BPVG3 into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP BPVG3 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 BPVG3. 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 BPVG3 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_BPVG3 TYPE STANDARD TABLE OF BPVG3,
      WA_BPVG3 TYPE BPVG3,
      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: <BPVG3> TYPE BPVG3.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_BPVG3.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM BPVG3
  INTO TABLE IT_BPVG3.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BPVG3
*  INTO TABLE @DATA(IT_BPVG32).
*--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_BPVG3 INDEX 1 INTO DATA(WA_BPVG32).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_BPVG3 ASSIGNING <BPVG3>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BPVG3>-MANDT = 1.
<BPVG3>-BELNR = 1.
<BPVG3>-BUZEI = 1.
<BPVG3>-WTGES = 1.
<BPVG3>-WLGES = 1.

ENDLOOP.

LOOP AT IT_BPVG3 INTO WA_BPVG3.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BPVG3-KALNR, sy-vline,
  WA_BPVG3-KLVAR, sy-vline,
  WA_BPVG3-LEDNR, sy-vline,
  WA_BPVG3-OBJNR, sy-vline,
  WA_BPVG3-POSIT, sy-vline,
  WA_BPVG3-TRGKZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BPVG3 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_BPVG3 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_BPVG3 INTO WA_BPVG3.


*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 NUMCV, internal->external for field LEDNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_BPVG3-LEDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BPVG3-LEDNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field WRTTP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BPVG3-WRTTP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BPVG3-WRTTP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VERSN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BPVG3-VERSN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BPVG3-VERSN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_BPVG3-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BPVG3-GJAHR.
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_BPVG3_STR, 
MANDT TYPE STRING,
BELNR TYPE STRING,
BUZEI TYPE STRING,
WTGES TYPE STRING,
WLGES TYPE STRING,
KALNR TYPE STRING,
KLVAR TYPE STRING,
LEDNR TYPE STRING,
OBJNR TYPE STRING,
POSIT TYPE STRING,
TRGKZ TYPE STRING,
WRTTP TYPE STRING,
GEBER TYPE STRING,
VERSN TYPE STRING,
VORGA TYPE STRING,
TWAER TYPE STRING,
PLDAT TYPE STRING,
KURST TYPE STRING,
GJAHR TYPE STRING,
CPUDT TYPE STRING,
USNAM TYPE STRING,
SUMBZ TYPE STRING,
BLDAT TYPE STRING,
SGTEXT TYPE STRING,
NAMTEXT TYPE STRING,
DELBZ TYPE STRING,
SUM_BPJA TYPE STRING,
DEL_BPJA TYPE STRING,
SUM_BPGE TYPE STRING,
DEL_BPGE TYPE STRING,
SUM_BPPE TYPE STRING,
DEL_BPPE TYPE STRING,
FOBEL TYPE STRING,
VERANT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BPVG3_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_BPVG3_STR-MANDT sy-vline 
WA_BPVG3_STR-BELNR sy-vline 
WA_BPVG3_STR-BUZEI sy-vline 
WA_BPVG3_STR-WTGES sy-vline 
WA_BPVG3_STR-WLGES sy-vline 
WA_BPVG3_STR-KALNR sy-vline 
WA_BPVG3_STR-KLVAR sy-vline 
WA_BPVG3_STR-LEDNR sy-vline 
WA_BPVG3_STR-OBJNR sy-vline 
WA_BPVG3_STR-POSIT sy-vline 
WA_BPVG3_STR-TRGKZ sy-vline 
WA_BPVG3_STR-WRTTP sy-vline 
WA_BPVG3_STR-GEBER sy-vline 
WA_BPVG3_STR-VERSN sy-vline 
WA_BPVG3_STR-VORGA sy-vline 
WA_BPVG3_STR-TWAER sy-vline 
WA_BPVG3_STR-PLDAT sy-vline 
WA_BPVG3_STR-KURST sy-vline 
WA_BPVG3_STR-GJAHR sy-vline 
WA_BPVG3_STR-CPUDT sy-vline 
WA_BPVG3_STR-USNAM sy-vline 
WA_BPVG3_STR-SUMBZ sy-vline 
WA_BPVG3_STR-BLDAT sy-vline 
WA_BPVG3_STR-SGTEXT sy-vline 
WA_BPVG3_STR-NAMTEXT sy-vline 
WA_BPVG3_STR-DELBZ sy-vline 
WA_BPVG3_STR-SUM_BPJA sy-vline 
WA_BPVG3_STR-DEL_BPJA sy-vline 
WA_BPVG3_STR-SUM_BPGE sy-vline 
WA_BPVG3_STR-DEL_BPGE sy-vline 
WA_BPVG3_STR-SUM_BPPE sy-vline 
WA_BPVG3_STR-DEL_BPPE sy-vline 
WA_BPVG3_STR-FOBEL sy-vline 
WA_BPVG3_STR-VERANT sy-vline      INTO ld_text SEPARATED BY SPACE.

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