ABAP Select data from SAP table BDMOD2TP into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP BDMOD2TP 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 BDMOD2TP. 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 BDMOD2TP 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_BDMOD2TP TYPE STANDARD TABLE OF BDMOD2TP,
      WA_BDMOD2TP TYPE BDMOD2TP,
      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: <BDMOD2TP> TYPE BDMOD2TP.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_BDMOD2TP.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM BDMOD2TP
  INTO TABLE IT_BDMOD2TP.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BDMOD2TP
*  INTO TABLE @DATA(IT_BDMOD2TP2).
*--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_BDMOD2TP INDEX 1 INTO DATA(WA_BDMOD2TP2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_BDMOD2TP ASSIGNING <BDMOD2TP>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BDMOD2TP>-DOCNUM = 1.
<BDMOD2TP>-RCVPRN = 1.
<BDMOD2TP>-RCVPRT = 1.
<BDMOD2TP>-RCVPFC = 1.
<BDMOD2TP>-ICOUNT = 1.

ENDLOOP.

LOOP AT IT_BDMOD2TP INTO WA_BDMOD2TP.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BDMOD2TP-ERROR, sy-vline,
  WA_BDMOD2TP-RFCDEST, sy-vline,
  WA_BDMOD2TP-DATUM, sy-vline,
  WA_BDMOD2TP-RCVPOR, sy-vline,
  WA_BDMOD2TP-TID, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_BDMOD2TP 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_BDMOD2TP 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_BDMOD2TP INTO WA_BDMOD2TP.


*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 RCVPRN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BDMOD2TP-RCVPRN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BDMOD2TP-RCVPRN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EDIPV, internal->external for field RCVPFC
CALL FUNCTION 'CONVERSION_EXIT_EDIPV_OUTPUT'
  EXPORTING
    input =                      WA_BDMOD2TP-RCVPFC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BDMOD2TP-RCVPFC.
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_BDMOD2TP_STR, 
DOCNUM TYPE STRING,
RCVPRN TYPE STRING,
RCVPRT TYPE STRING,
RCVPFC TYPE STRING,
ICOUNT TYPE STRING,
ERROR TYPE STRING,
RFCDEST TYPE STRING,
DATUM TYPE STRING,
RCVPOR TYPE STRING,
TID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BDMOD2TP_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_BDMOD2TP_STR-DOCNUM sy-vline 
WA_BDMOD2TP_STR-RCVPRN sy-vline 
WA_BDMOD2TP_STR-RCVPRT sy-vline 
WA_BDMOD2TP_STR-RCVPFC sy-vline 
WA_BDMOD2TP_STR-ICOUNT sy-vline 
WA_BDMOD2TP_STR-ERROR sy-vline 
WA_BDMOD2TP_STR-RFCDEST sy-vline 
WA_BDMOD2TP_STR-DATUM sy-vline 
WA_BDMOD2TP_STR-RCVPOR sy-vline 
WA_BDMOD2TP_STR-TID sy-vline      INTO ld_text SEPARATED BY SPACE.

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