ABAP Select data from SAP table TRFCQINS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TRFCQINS
*  INTO TABLE @DATA(IT_TRFCQINS2).
*--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_TRFCQINS INDEX 1 INTO DATA(WA_TRFCQINS2).


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

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

ENDLOOP.

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

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


*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_TRFCQINS_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_TRFCQINS_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_TRFCQINS_STR-MANDT sy-vline 
WA_TRFCQINS_STR-ARFCIPID sy-vline 
WA_TRFCQINS_STR-ARFCPID sy-vline 
WA_TRFCQINS_STR-ARFCTIME sy-vline 
WA_TRFCQINS_STR-ARFCTIDCNT sy-vline 
WA_TRFCQINS_STR-QNAME sy-vline 
WA_TRFCQINS_STR-QCOUNT sy-vline 
WA_TRFCQINS_STR-HPQNAME sy-vline 
WA_TRFCQINS_STR-DEST sy-vline 
WA_TRFCQINS_STR-NOSEND sy-vline 
WA_TRFCQINS_STR-QSTATE sy-vline 
WA_TRFCQINS_STR-QLOCKCNT sy-vline 
WA_TRFCQINS_STR-QRFCUSER sy-vline 
WA_TRFCQINS_STR-QRFCFNAM sy-vline 
WA_TRFCQINS_STR-QRFCDATUM sy-vline 
WA_TRFCQINS_STR-QRFCUZEIT sy-vline 
WA_TRFCQINS_STR-ORGTID sy-vline 
WA_TRFCQINS_STR-QLUWCNT sy-vline 
WA_TRFCQINS_STR-BATCHPLA sy-vline 
WA_TRFCQINS_STR-RETRYDATE sy-vline 
WA_TRFCQINS_STR-RETRYTIME sy-vline 
WA_TRFCQINS_STR-RETRYNR sy-vline 
WA_TRFCQINS_STR-QMAILED sy-vline 
WA_TRFCQINS_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.