ABAP Select data from SAP table RFC_PRA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RFC_PRA
*  INTO TABLE @DATA(IT_RFC_PRA2).
*--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_RFC_PRA INDEX 1 INTO DATA(WA_RFC_PRA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RFC_PRA>-BLART = 1.
<RFC_PRA>-BUDAT = 1.
<RFC_PRA>-BLDAT = 1.
<RFC_PRA>-BUKRS = 1.
<RFC_PRA>-WAERS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RFC_PRA-WWERT, sy-vline,
  WA_RFC_PRA-KURSF, sy-vline,
  WA_RFC_PRA-XBLNR, sy-vline,
  WA_RFC_PRA-BKTXT, sy-vline,
  WA_RFC_PRA-LIFNR, sy-vline,
  WA_RFC_PRA-XSKZG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RFC_PRA 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_RFC_PRA 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_RFC_PRA INTO WA_RFC_PRA.


*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_RFC_PRA_STR, 
BLART TYPE STRING,
BUDAT TYPE STRING,
BLDAT TYPE STRING,
BUKRS TYPE STRING,
WAERS TYPE STRING,
WWERT TYPE STRING,
KURSF TYPE STRING,
XBLNR TYPE STRING,
BKTXT TYPE STRING,
LIFNR TYPE STRING,
XSKZG TYPE STRING,
UMSKZ TYPE STRING,
XHKZG TYPE STRING,
WRBTR TYPE STRING,
WMWST TYPE STRING,
MWSKZ TYPE STRING,
PAMTF TYPE STRING,
PACUR TYPE STRING,
ZWERT TYPE STRING,
ZUONR TYPE STRING,
SGTXT TYPE STRING,
ZFBDT TYPE STRING,
ZTERM TYPE STRING,
HLP_VALUT TYPE STRING,
XVALUT TYPE STRING,
ZLSPR TYPE STRING,
XURGE TYPE STRING,
HBKID TYPE STRING,
HKTID TYPE STRING,
RZAWE TYPE STRING,
UZAWE TYPE STRING,
SWTXT1 TYPE STRING,
SWTXT2 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RFC_PRA_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_RFC_PRA_STR-BLART sy-vline 
WA_RFC_PRA_STR-BUDAT sy-vline 
WA_RFC_PRA_STR-BLDAT sy-vline 
WA_RFC_PRA_STR-BUKRS sy-vline 
WA_RFC_PRA_STR-WAERS sy-vline 
WA_RFC_PRA_STR-WWERT sy-vline 
WA_RFC_PRA_STR-KURSF sy-vline 
WA_RFC_PRA_STR-XBLNR sy-vline 
WA_RFC_PRA_STR-BKTXT sy-vline 
WA_RFC_PRA_STR-LIFNR sy-vline 
WA_RFC_PRA_STR-XSKZG sy-vline 
WA_RFC_PRA_STR-UMSKZ sy-vline 
WA_RFC_PRA_STR-XHKZG sy-vline 
WA_RFC_PRA_STR-WRBTR sy-vline 
WA_RFC_PRA_STR-WMWST sy-vline 
WA_RFC_PRA_STR-MWSKZ sy-vline 
WA_RFC_PRA_STR-PAMTF sy-vline 
WA_RFC_PRA_STR-PACUR sy-vline 
WA_RFC_PRA_STR-ZWERT sy-vline 
WA_RFC_PRA_STR-ZUONR sy-vline 
WA_RFC_PRA_STR-SGTXT sy-vline 
WA_RFC_PRA_STR-ZFBDT sy-vline 
WA_RFC_PRA_STR-ZTERM sy-vline 
WA_RFC_PRA_STR-HLP_VALUT sy-vline 
WA_RFC_PRA_STR-XVALUT sy-vline 
WA_RFC_PRA_STR-ZLSPR sy-vline 
WA_RFC_PRA_STR-XURGE sy-vline 
WA_RFC_PRA_STR-HBKID sy-vline 
WA_RFC_PRA_STR-HKTID sy-vline 
WA_RFC_PRA_STR-RZAWE sy-vline 
WA_RFC_PRA_STR-UZAWE sy-vline 
WA_RFC_PRA_STR-SWTXT1 sy-vline 
WA_RFC_PRA_STR-SWTXT2 sy-vline      INTO ld_text SEPARATED BY SPACE.

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