ABAP Select data from SAP table TRFCQIN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TRFCQIN
*  INTO TABLE @DATA(IT_TRFCQIN2).
*--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_TRFCQIN INDEX 1 INTO DATA(WA_TRFCQIN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TRFCQIN>-MANDT = 1.
<TRFCQIN>-ARFCIPID = 1.
<TRFCQIN>-ARFCPID = 1.
<TRFCQIN>-ARFCTIME = 1.
<TRFCQIN>-ARFCTIDCNT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TRFCQIN-QNAME, sy-vline,
  WA_TRFCQIN-QCOUNT, sy-vline,
  WA_TRFCQIN-HPQNAME, sy-vline,
  WA_TRFCQIN-DEST, sy-vline,
  WA_TRFCQIN-NOSEND, sy-vline,
  WA_TRFCQIN-QSTATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TRFCQIN 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_TRFCQIN 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_TRFCQIN INTO WA_TRFCQIN.


*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_TRFCQIN_STR, 
MANDT TYPE STRING,
ARFCIPID TYPE STRING,
ARFCPID TYPE STRING,
ARFCTIME TYPE STRING,
ARFCTIDCNT TYPE STRING,
QNAME TYPE STRING,
QCOUNT TYPE STRING,
HPQNAME TYPE STRING,
DEST TYPE STRING,
NOSEND TYPE STRING,
QSTATE TYPE STRING,
QLOCKCNT TYPE STRING,
QRFCUSER TYPE STRING,
QRFCFNAM TYPE STRING,
QRFCDATUM TYPE STRING,
QRFCUZEIT TYPE STRING,
ORGTID TYPE STRING,
QLUWCNT TYPE STRING,
BATCHPLA TYPE STRING,
RETRYDATE TYPE STRING,
RETRYTIME TYPE STRING,
RETRYNR TYPE STRING,
QMAILED TYPE STRING,
ERRMESS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TRFCQIN_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_TRFCQIN_STR-MANDT sy-vline 
WA_TRFCQIN_STR-ARFCIPID sy-vline 
WA_TRFCQIN_STR-ARFCPID sy-vline 
WA_TRFCQIN_STR-ARFCTIME sy-vline 
WA_TRFCQIN_STR-ARFCTIDCNT sy-vline 
WA_TRFCQIN_STR-QNAME sy-vline 
WA_TRFCQIN_STR-QCOUNT sy-vline 
WA_TRFCQIN_STR-HPQNAME sy-vline 
WA_TRFCQIN_STR-DEST sy-vline 
WA_TRFCQIN_STR-NOSEND sy-vline 
WA_TRFCQIN_STR-QSTATE sy-vline 
WA_TRFCQIN_STR-QLOCKCNT sy-vline 
WA_TRFCQIN_STR-QRFCUSER sy-vline 
WA_TRFCQIN_STR-QRFCFNAM sy-vline 
WA_TRFCQIN_STR-QRFCDATUM sy-vline 
WA_TRFCQIN_STR-QRFCUZEIT sy-vline 
WA_TRFCQIN_STR-ORGTID sy-vline 
WA_TRFCQIN_STR-QLUWCNT sy-vline 
WA_TRFCQIN_STR-BATCHPLA sy-vline 
WA_TRFCQIN_STR-RETRYDATE sy-vline 
WA_TRFCQIN_STR-RETRYTIME sy-vline 
WA_TRFCQIN_STR-RETRYNR sy-vline 
WA_TRFCQIN_STR-QMAILED sy-vline 
WA_TRFCQIN_STR-ERRMESS sy-vline      INTO ld_text SEPARATED BY SPACE.

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