ABAP Select data from SAP table BAPI_DRAW into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BAPI_DRAW
*  INTO TABLE @DATA(IT_BAPI_DRAW2).
*--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_BAPI_DRAW INDEX 1 INTO DATA(WA_BAPI_DRAW2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BAPI_DRAW>-DOCTYPE = 1.
<BAPI_DRAW>-DOCNUMBER = 1.
<BAPI_DRAW>-DOCVERSION = 1.
<BAPI_DRAW>-DOCPART = 1.
<BAPI_DRAW>-REFDOCNUMBER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BAPI_DRAW-REFDOCVERSION, sy-vline,
  WA_BAPI_DRAW-REFDOCPART, sy-vline,
  WA_BAPI_DRAW-DOCUSER, sy-vline,
  WA_BAPI_DRAW-DOCSTATUS_EXTERN, sy-vline,
  WA_BAPI_DRAW-DOCSTATUS_INTERN, sy-vline,
  WA_BAPI_DRAW-STATUSLOG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BAPI_DRAW 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_BAPI_DRAW 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_BAPI_DRAW INTO WA_BAPI_DRAW.


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

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

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

*Conversion exit ALPHA, internal->external for field PREDOCNUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BAPI_DRAW-PREDOCNUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPI_DRAW-PREDOCNUMBER.
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_BAPI_DRAW_STR, 
DOCTYPE TYPE STRING,
DOCNUMBER TYPE STRING,
DOCVERSION TYPE STRING,
DOCPART TYPE STRING,
REFDOCNUMBER TYPE STRING,
REFDOCVERSION TYPE STRING,
REFDOCPART TYPE STRING,
DOCUSER TYPE STRING,
DOCSTATUS_EXTERN TYPE STRING,
DOCSTATUS_INTERN TYPE STRING,
STATUSLOG TYPE STRING,
LABORATORY TYPE STRING,
ECNUMBER TYPE STRING,
CADINDICATOR TYPE STRING,
PREDOCTYPE TYPE STRING,
PREDOCNUMBER TYPE STRING,
PREDOCVERSION TYPE STRING,
PREDOCPART TYPE STRING,
AUTHORITYGROUP TYPE STRING,
ORIGINAL1 TYPE STRING,
DATACARRIER1 TYPE STRING,
APPLICATION1 TYPE STRING,
ORIGINAL2 TYPE STRING,
DATACARRIER2 TYPE STRING,
APPLICATION2 TYPE STRING,
USERDEFINED1 TYPE STRING,
USERDEFINED2 TYPE STRING,
USERDEFINED3 TYPE STRING,
USERDEFINED4 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BAPI_DRAW_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_BAPI_DRAW_STR-DOCTYPE sy-vline 
WA_BAPI_DRAW_STR-DOCNUMBER sy-vline 
WA_BAPI_DRAW_STR-DOCVERSION sy-vline 
WA_BAPI_DRAW_STR-DOCPART sy-vline 
WA_BAPI_DRAW_STR-REFDOCNUMBER sy-vline 
WA_BAPI_DRAW_STR-REFDOCVERSION sy-vline 
WA_BAPI_DRAW_STR-REFDOCPART sy-vline 
WA_BAPI_DRAW_STR-DOCUSER sy-vline 
WA_BAPI_DRAW_STR-DOCSTATUS_EXTERN sy-vline 
WA_BAPI_DRAW_STR-DOCSTATUS_INTERN sy-vline 
WA_BAPI_DRAW_STR-STATUSLOG sy-vline 
WA_BAPI_DRAW_STR-LABORATORY sy-vline 
WA_BAPI_DRAW_STR-ECNUMBER sy-vline 
WA_BAPI_DRAW_STR-CADINDICATOR sy-vline 
WA_BAPI_DRAW_STR-PREDOCTYPE sy-vline 
WA_BAPI_DRAW_STR-PREDOCNUMBER sy-vline 
WA_BAPI_DRAW_STR-PREDOCVERSION sy-vline 
WA_BAPI_DRAW_STR-PREDOCPART sy-vline 
WA_BAPI_DRAW_STR-AUTHORITYGROUP sy-vline 
WA_BAPI_DRAW_STR-ORIGINAL1 sy-vline 
WA_BAPI_DRAW_STR-DATACARRIER1 sy-vline 
WA_BAPI_DRAW_STR-APPLICATION1 sy-vline 
WA_BAPI_DRAW_STR-ORIGINAL2 sy-vline 
WA_BAPI_DRAW_STR-DATACARRIER2 sy-vline 
WA_BAPI_DRAW_STR-APPLICATION2 sy-vline 
WA_BAPI_DRAW_STR-USERDEFINED1 sy-vline 
WA_BAPI_DRAW_STR-USERDEFINED2 sy-vline 
WA_BAPI_DRAW_STR-USERDEFINED3 sy-vline 
WA_BAPI_DRAW_STR-USERDEFINED4 sy-vline      INTO ld_text SEPARATED BY SPACE.

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