ABAP Select data from SAP table DRBKP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DRBKP
*  INTO TABLE @DATA(IT_DRBKP2).
*--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_DRBKP INDEX 1 INTO DATA(WA_DRBKP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DRBKP>-BELNR = 1.
<DRBKP>-BLART = 1.
<DRBKP>-BLDAT = 1.
<DRBKP>-BUDAT = 1.
<DRBKP>-BUKRS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DRBKP-GJAHR, sy-vline,
  WA_DRBKP-KURSF, sy-vline,
  WA_DRBKP-LIFNR, sy-vline,
  WA_DRBKP-MWSKZ1, sy-vline,
  WA_DRBKP-MWSKZ2, sy-vline,
  WA_DRBKP-WAERS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DRBKP 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_DRBKP 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_DRBKP INTO WA_DRBKP.


*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_DRBKP-BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DRBKP-BELNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit EXCRT, internal->external for field KURSF
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_DRBKP-KURSF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DRBKP-KURSF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DRBKP-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DRBKP-LIFNR.
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_DRBKP_STR, 
BELNR TYPE STRING,
BLART TYPE STRING,
BLDAT TYPE STRING,
BUDAT TYPE STRING,
BUKRS TYPE STRING,
GJAHR TYPE STRING,
KURSF TYPE STRING,
LIFNR TYPE STRING,
MWSKZ1 TYPE STRING,
MWSKZ2 TYPE STRING,
WAERS TYPE STRING,
XBLNR TYPE STRING,
ZTERM TYPE STRING,
ZBD1P TYPE STRING,
ZBD1T TYPE STRING,
ZBD2P TYPE STRING,
ZBD2T TYPE STRING,
ZBD3T TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DRBKP_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_DRBKP_STR-BELNR sy-vline 
WA_DRBKP_STR-BLART sy-vline 
WA_DRBKP_STR-BLDAT sy-vline 
WA_DRBKP_STR-BUDAT sy-vline 
WA_DRBKP_STR-BUKRS sy-vline 
WA_DRBKP_STR-GJAHR sy-vline 
WA_DRBKP_STR-KURSF sy-vline 
WA_DRBKP_STR-LIFNR sy-vline 
WA_DRBKP_STR-MWSKZ1 sy-vline 
WA_DRBKP_STR-MWSKZ2 sy-vline 
WA_DRBKP_STR-WAERS sy-vline 
WA_DRBKP_STR-XBLNR sy-vline 
WA_DRBKP_STR-ZTERM sy-vline 
WA_DRBKP_STR-ZBD1P sy-vline 
WA_DRBKP_STR-ZBD1T sy-vline 
WA_DRBKP_STR-ZBD2P sy-vline 
WA_DRBKP_STR-ZBD2T sy-vline 
WA_DRBKP_STR-ZBD3T sy-vline      INTO ld_text SEPARATED BY SPACE.

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