ABAP Select data from SAP table BFCUST into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BFCUST
*  INTO TABLE @DATA(IT_BFCUST2).
*--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_BFCUST INDEX 1 INTO DATA(WA_BFCUST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BFCUST>-SOVALPLUS = 1.
<BFCUST>-SOVALMINUS = 1.
<BFCUST>-SOVALNO = 1.
<BFCUST>-SOQUAPLUS = 1.
<BFCUST>-SOQUAMINUS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BFCUST-SOQUANO, sy-vline,
  WA_BFCUST-SOPOSPLUS, sy-vline,
  WA_BFCUST-SOPOSMINUS, sy-vline,
  WA_BFCUST-SOPOSNO, sy-vline,
  WA_BFCUST-RAVALT, sy-vline,
  WA_BFCUST-RAQUAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BFCUST 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_BFCUST 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_BFCUST INTO WA_BFCUST.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_BFCUST_STR, 
SOVALPLUS TYPE STRING,
SOVALMINUS TYPE STRING,
SOVALNO TYPE STRING,
SOQUAPLUS TYPE STRING,
SOQUAMINUS TYPE STRING,
SOQUANO TYPE STRING,
SOPOSPLUS TYPE STRING,
SOPOSMINUS TYPE STRING,
SOPOSNO TYPE STRING,
RAVALT TYPE STRING,
RAQUAT TYPE STRING,
RAPOST TYPE STRING,
WERKT TYPE STRING,
EPRIOT TYPE STRING,
RULEST TYPE STRING,
WMHDLT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BFCUST_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_BFCUST_STR-SOVALPLUS sy-vline 
WA_BFCUST_STR-SOVALMINUS sy-vline 
WA_BFCUST_STR-SOVALNO sy-vline 
WA_BFCUST_STR-SOQUAPLUS sy-vline 
WA_BFCUST_STR-SOQUAMINUS sy-vline 
WA_BFCUST_STR-SOQUANO sy-vline 
WA_BFCUST_STR-SOPOSPLUS sy-vline 
WA_BFCUST_STR-SOPOSMINUS sy-vline 
WA_BFCUST_STR-SOPOSNO sy-vline 
WA_BFCUST_STR-RAVALT sy-vline 
WA_BFCUST_STR-RAQUAT sy-vline 
WA_BFCUST_STR-RAPOST sy-vline 
WA_BFCUST_STR-WERKT sy-vline 
WA_BFCUST_STR-EPRIOT sy-vline 
WA_BFCUST_STR-RULEST sy-vline 
WA_BFCUST_STR-WMHDLT sy-vline      INTO ld_text SEPARATED BY SPACE.

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