ABAP Select data from SAP table TRRFCREC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TRRFCREC
*  INTO TABLE @DATA(IT_TRRFCREC2).
*--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_TRRFCREC INDEX 1 INTO DATA(WA_TRRFCREC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TRRFCREC>-EYE_ANF = 1.
<TRRFCREC>-RECTYPE = 1.
<TRRFCREC>-TIMESTAMP1 = 1.
<TRRFCREC>-TIMESTAMP2 = 1.
<TRRFCREC>-RECLEN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TRRFCREC-DUMMY, sy-vline,
  WA_TRRFCREC-STATE, sy-vline,
  WA_TRRFCREC-STARTTIME1, sy-vline,
  WA_TRRFCREC-STARTTIME2, sy-vline,
  WA_TRRFCREC-ENDTIME1, sy-vline,
  WA_TRRFCREC-ENDTIME2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TRRFCREC 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_TRRFCREC 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_TRRFCREC INTO WA_TRRFCREC.


*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_TRRFCREC_STR, 
EYE_ANF TYPE STRING,
RECTYPE TYPE STRING,
TIMESTAMP1 TYPE STRING,
TIMESTAMP2 TYPE STRING,
RECLEN TYPE STRING,
DUMMY TYPE STRING,
STATE TYPE STRING,
STARTTIME1 TYPE STRING,
STARTTIME2 TYPE STRING,
ENDTIME1 TYPE STRING,
ENDTIME2 TYPE STRING,
CONV_ID TYPE STRING,
IP_ADDR TYPE STRING,
REM_IP TYPE STRING,
HOSTNAME TYPE STRING,
RFC_DEST TYPE STRING,
BYTES_SND TYPE STRING,
BYTES_RCV TYPE STRING,
TIME TYPE STRING,
FUNCTION TYPE STRING,
LINE TYPE STRING,
PROGRAM TYPE STRING,
RETCODE TYPE STRING,
DURATION TYPE STRING,
STRING_LEN TYPE STRING,
SEND_RECV TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TRRFCREC_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_TRRFCREC_STR-EYE_ANF sy-vline 
WA_TRRFCREC_STR-RECTYPE sy-vline 
WA_TRRFCREC_STR-TIMESTAMP1 sy-vline 
WA_TRRFCREC_STR-TIMESTAMP2 sy-vline 
WA_TRRFCREC_STR-RECLEN sy-vline 
WA_TRRFCREC_STR-DUMMY sy-vline 
WA_TRRFCREC_STR-STATE sy-vline 
WA_TRRFCREC_STR-STARTTIME1 sy-vline 
WA_TRRFCREC_STR-STARTTIME2 sy-vline 
WA_TRRFCREC_STR-ENDTIME1 sy-vline 
WA_TRRFCREC_STR-ENDTIME2 sy-vline 
WA_TRRFCREC_STR-CONV_ID sy-vline 
WA_TRRFCREC_STR-IP_ADDR sy-vline 
WA_TRRFCREC_STR-REM_IP sy-vline 
WA_TRRFCREC_STR-HOSTNAME sy-vline 
WA_TRRFCREC_STR-RFC_DEST sy-vline 
WA_TRRFCREC_STR-BYTES_SND sy-vline 
WA_TRRFCREC_STR-BYTES_RCV sy-vline 
WA_TRRFCREC_STR-TIME sy-vline 
WA_TRRFCREC_STR-FUNCTION sy-vline 
WA_TRRFCREC_STR-LINE sy-vline 
WA_TRRFCREC_STR-PROGRAM sy-vline 
WA_TRRFCREC_STR-RETCODE sy-vline 
WA_TRRFCREC_STR-DURATION sy-vline 
WA_TRRFCREC_STR-STRING_LEN sy-vline 
WA_TRRFCREC_STR-SEND_RECV sy-vline      INTO ld_text SEPARATED BY SPACE.

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