ABAP Select data from SAP table OIUPR_API_RFC into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP OIUPR_API_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 OIUPR_API_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 OIUPR_API_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_OIUPR_API_RFC TYPE STANDARD TABLE OF OIUPR_API_RFC,
      WA_OIUPR_API_RFC TYPE OIUPR_API_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: <OIUPR_API_RFC> TYPE OIUPR_API_RFC.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM OIUPR_API_RFC
*  INTO TABLE @DATA(IT_OIUPR_API_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_OIUPR_API_RFC INDEX 1 INTO DATA(WA_OIUPR_API_RFC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<OIUPR_API_RFC>-MANDT = 1.
<OIUPR_API_RFC>-RFCDEST = 1.
<OIUPR_API_RFC>-APIND = 1.
<OIUPR_API_RFC>-TRXNO = 1.
<OIUPR_API_RFC>-LINNO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_OIUPR_API_RFC-SDATA, sy-vline,
  WA_OIUPR_API_RFC-MSGTY, sy-vline,
  WA_OIUPR_API_RFC-MSGID, sy-vline,
  WA_OIUPR_API_RFC-MSGNO, sy-vline,
  WA_OIUPR_API_RFC-MSGV1, sy-vline,
  WA_OIUPR_API_RFC-MSGV2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_OIUPR_API_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_OIUPR_API_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_OIUPR_API_RFC INTO WA_OIUPR_API_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_OIUPR_API_RFC_STR, 
MANDT TYPE STRING,
RFCDEST TYPE STRING,
APIND TYPE STRING,
TRXNO TYPE STRING,
LINNO TYPE STRING,
SDATA TYPE STRING,
MSGTY TYPE STRING,
MSGID TYPE STRING,
MSGNO TYPE STRING,
MSGV1 TYPE STRING,
MSGV2 TYPE STRING,
MSGV3 TYPE STRING,
MSGV4 TYPE STRING,
MESSAGE TYPE STRING,
SUBRC TYPE STRING,
GROUPID TYPE STRING,
FILENAME_I TYPE STRING,
FILENAME_O TYPE STRING,
RFCIND TYPE STRING,
OIU_CRUSER TYPE STRING,
OIU_TIMESTAMP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_OIUPR_API_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_OIUPR_API_RFC_STR-MANDT sy-vline 
WA_OIUPR_API_RFC_STR-RFCDEST sy-vline 
WA_OIUPR_API_RFC_STR-APIND sy-vline 
WA_OIUPR_API_RFC_STR-TRXNO sy-vline 
WA_OIUPR_API_RFC_STR-LINNO sy-vline 
WA_OIUPR_API_RFC_STR-SDATA sy-vline 
WA_OIUPR_API_RFC_STR-MSGTY sy-vline 
WA_OIUPR_API_RFC_STR-MSGID sy-vline 
WA_OIUPR_API_RFC_STR-MSGNO sy-vline 
WA_OIUPR_API_RFC_STR-MSGV1 sy-vline 
WA_OIUPR_API_RFC_STR-MSGV2 sy-vline 
WA_OIUPR_API_RFC_STR-MSGV3 sy-vline 
WA_OIUPR_API_RFC_STR-MSGV4 sy-vline 
WA_OIUPR_API_RFC_STR-MESSAGE sy-vline 
WA_OIUPR_API_RFC_STR-SUBRC sy-vline 
WA_OIUPR_API_RFC_STR-GROUPID sy-vline 
WA_OIUPR_API_RFC_STR-FILENAME_I sy-vline 
WA_OIUPR_API_RFC_STR-FILENAME_O sy-vline 
WA_OIUPR_API_RFC_STR-RFCIND sy-vline 
WA_OIUPR_API_RFC_STR-OIU_CRUSER sy-vline 
WA_OIUPR_API_RFC_STR-OIU_TIMESTAMP sy-vline      INTO ld_text SEPARATED BY SPACE.

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