ABAP Select data from SAP table TRFCQVIEW_D into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TRFCQVIEW_D
*  INTO TABLE @DATA(IT_TRFCQVIEW_D2).
*--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_TRFCQVIEW_D INDEX 1 INTO DATA(WA_TRFCQVIEW_D2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TRFCQVIEW_D>-MANDT = 1.
<TRFCQVIEW_D>-QNAME = 1.
<TRFCQVIEW_D>-DEST = 1.
<TRFCQVIEW_D>-QDEEP = 1.
<TRFCQVIEW_D>-QSTATE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TRFCQVIEW_D-WQNAME, sy-vline,
  WA_TRFCQVIEW_D-FDATE, sy-vline,
  WA_TRFCQVIEW_D-FTIME, sy-vline,
  WA_TRFCQVIEW_D-LDATE, sy-vline,
  WA_TRFCQVIEW_D-LTIME, sy-vline,
  WA_TRFCQVIEW_D-FQCOUNT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TRFCQVIEW_D 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_TRFCQVIEW_D 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_TRFCQVIEW_D INTO WA_TRFCQVIEW_D.


*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_TRFCQVIEW_D_STR, 
MANDT TYPE STRING,
QNAME TYPE STRING,
DEST TYPE STRING,
QDEEP TYPE STRING,
QSTATE TYPE STRING,
WQNAME TYPE STRING,
FDATE TYPE STRING,
FTIME TYPE STRING,
LDATE TYPE STRING,
LTIME TYPE STRING,
FQCOUNT TYPE STRING,
LQCOUNT TYPE STRING,
ERRMESS TYPE STRING,
QLUWCNT TYPE STRING,
BATCHPLA TYPE STRING,
FIRSTTID TYPE STRING,
DEPDEEP TYPE STRING,
EQUIQ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TRFCQVIEW_D_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_TRFCQVIEW_D_STR-MANDT sy-vline 
WA_TRFCQVIEW_D_STR-QNAME sy-vline 
WA_TRFCQVIEW_D_STR-DEST sy-vline 
WA_TRFCQVIEW_D_STR-QDEEP sy-vline 
WA_TRFCQVIEW_D_STR-QSTATE sy-vline 
WA_TRFCQVIEW_D_STR-WQNAME sy-vline 
WA_TRFCQVIEW_D_STR-FDATE sy-vline 
WA_TRFCQVIEW_D_STR-FTIME sy-vline 
WA_TRFCQVIEW_D_STR-LDATE sy-vline 
WA_TRFCQVIEW_D_STR-LTIME sy-vline 
WA_TRFCQVIEW_D_STR-FQCOUNT sy-vline 
WA_TRFCQVIEW_D_STR-LQCOUNT sy-vline 
WA_TRFCQVIEW_D_STR-ERRMESS sy-vline 
WA_TRFCQVIEW_D_STR-QLUWCNT sy-vline 
WA_TRFCQVIEW_D_STR-BATCHPLA sy-vline 
WA_TRFCQVIEW_D_STR-FIRSTTID sy-vline 
WA_TRFCQVIEW_D_STR-DEPDEEP sy-vline 
WA_TRFCQVIEW_D_STR-EQUIQ sy-vline      INTO ld_text SEPARATED BY SPACE.

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