ABAP Select data from SAP table BUS050_DAT_RFC into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP BUS050_DAT_RFC 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 BUS050_DAT_RFC. 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 BUS050_DAT_RFC 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_BUS050_DAT_RFC TYPE STANDARD TABLE OF BUS050_DAT_RFC,
      WA_BUS050_DAT_RFC TYPE BUS050_DAT_RFC,
      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: <BUS050_DAT_RFC> TYPE BUS050_DAT_RFC.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_BUS050_DAT_RFC.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM BUS050_DAT_RFC
  INTO TABLE IT_BUS050_DAT_RFC.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BUS050_DAT_RFC
*  INTO TABLE @DATA(IT_BUS050_DAT_RFC2).
*--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_BUS050_DAT_RFC INDEX 1 INTO DATA(WA_BUS050_DAT_RFC2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_BUS050_DAT_RFC ASSIGNING <BUS050_DAT_RFC>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BUS050_DAT_RFC>-DATE_FROM = 1.
<BUS050_DAT_RFC>-RELTYP = 1.
<BUS050_DAT_RFC>-XRF = 1.
<BUS050_DAT_RFC>-DFTVAL = 1.
<BUS050_DAT_RFC>-RLTYP = 1.

ENDLOOP.

LOOP AT IT_BUS050_DAT_RFC INTO WA_BUS050_DAT_RFC.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BUS050_DAT_RFC-RELKIND, sy-vline,
  WA_BUS050_DAT_RFC-CRUSR, sy-vline,
  WA_BUS050_DAT_RFC-CRDAT, sy-vline,
  WA_BUS050_DAT_RFC-CRTIM, sy-vline,
  WA_BUS050_DAT_RFC-CHUSR, sy-vline,
  WA_BUS050_DAT_RFC-CHDAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BUS050_DAT_RFC 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_BUS050_DAT_RFC 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_BUS050_DAT_RFC INTO WA_BUS050_DAT_RFC.


*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_BUS050_DAT_RFC_STR, 
DATE_FROM TYPE STRING,
RELTYP TYPE STRING,
XRF TYPE STRING,
DFTVAL TYPE STRING,
RLTYP TYPE STRING,
RELKIND TYPE STRING,
CRUSR TYPE STRING,
CRDAT TYPE STRING,
CRTIM TYPE STRING,
CHUSR TYPE STRING,
CHDAT TYPE STRING,
CHTIM TYPE STRING,
XDFREL TYPE STRING,
XDFREL2 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BUS050_DAT_RFC_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_BUS050_DAT_RFC_STR-DATE_FROM sy-vline 
WA_BUS050_DAT_RFC_STR-RELTYP sy-vline 
WA_BUS050_DAT_RFC_STR-XRF sy-vline 
WA_BUS050_DAT_RFC_STR-DFTVAL sy-vline 
WA_BUS050_DAT_RFC_STR-RLTYP sy-vline 
WA_BUS050_DAT_RFC_STR-RELKIND sy-vline 
WA_BUS050_DAT_RFC_STR-CRUSR sy-vline 
WA_BUS050_DAT_RFC_STR-CRDAT sy-vline 
WA_BUS050_DAT_RFC_STR-CRTIM sy-vline 
WA_BUS050_DAT_RFC_STR-CHUSR sy-vline 
WA_BUS050_DAT_RFC_STR-CHDAT sy-vline 
WA_BUS050_DAT_RFC_STR-CHTIM sy-vline 
WA_BUS050_DAT_RFC_STR-XDFREL sy-vline 
WA_BUS050_DAT_RFC_STR-XDFREL2 sy-vline      INTO ld_text SEPARATED BY SPACE.

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