ABAP Select data from SAP table BP2000 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP BP2000 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 BP2000. 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 BP2000 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_BP2000 TYPE STANDARD TABLE OF BP2000,
      WA_BP2000 TYPE BP2000,
      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: <BP2000> TYPE BP2000.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_BP2000.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM BP2000
  INTO TABLE IT_BP2000.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BP2000
*  INTO TABLE @DATA(IT_BP20002).
*--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_BP2000 INDEX 1 INTO DATA(WA_BP20002).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_BP2000 ASSIGNING <BP2000>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BP2000>-MANDT = 1.
<BP2000>-REL_TYP = 1.
<BP2000>-PARTNR1 = 1.
<BP2000>-PARTNR2 = 1.
<BP2000>-DIF_TYP1 = 1.

ENDLOOP.

LOOP AT IT_BP2000 INTO WA_BP2000.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BP2000-DIF_TYP2, sy-vline,
  WA_BP2000-REL_DAT, sy-vline,
  WA_BP2000-RELAT, sy-vline,
  WA_BP2000-REL_END, sy-vline,
  WA_BP2000-REL_PER, sy-vline,
  WA_BP2000-REL_AMO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BP2000 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_BP2000 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_BP2000 INTO WA_BP2000.


*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 PARTNR1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BP2000-PARTNR1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BP2000-PARTNR1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PARTNR2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BP2000-PARTNR2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BP2000-PARTNR2.
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_BP2000_STR, 
MANDT TYPE STRING,
REL_TYP TYPE STRING,
PARTNR1 TYPE STRING,
PARTNR2 TYPE STRING,
DIF_TYP1 TYPE STRING,
DIF_TYP2 TYPE STRING,
REL_DAT TYPE STRING,
RELAT TYPE STRING,
REL_END TYPE STRING,
REL_PER TYPE STRING,
REL_AMO TYPE STRING,
REL_CUR TYPE STRING,
FUNCTN TYPE STRING,
DEPART TYPE STRING,
CONV_FLG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BP2000_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_BP2000_STR-MANDT sy-vline 
WA_BP2000_STR-REL_TYP sy-vline 
WA_BP2000_STR-PARTNR1 sy-vline 
WA_BP2000_STR-PARTNR2 sy-vline 
WA_BP2000_STR-DIF_TYP1 sy-vline 
WA_BP2000_STR-DIF_TYP2 sy-vline 
WA_BP2000_STR-REL_DAT sy-vline 
WA_BP2000_STR-RELAT sy-vline 
WA_BP2000_STR-REL_END sy-vline 
WA_BP2000_STR-REL_PER sy-vline 
WA_BP2000_STR-REL_AMO sy-vline 
WA_BP2000_STR-REL_CUR sy-vline 
WA_BP2000_STR-FUNCTN sy-vline 
WA_BP2000_STR-DEPART sy-vline 
WA_BP2000_STR-CONV_FLG sy-vline      INTO ld_text SEPARATED BY SPACE.

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