ABAP Select data from SAP table /XFT/INV_S_QMESSAGES into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /XFT/INV_S_QMESSAGES 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 /XFT/INV_S_QMESSAGES. 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 /XFT/INV_S_QMESSAGES 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_/XFT/INV_S_QMESSAGES TYPE STANDARD TABLE OF /XFT/INV_S_QMESSAGES,
      WA_/XFT/INV_S_QMESSAGES TYPE /XFT/INV_S_QMESSAGES,
      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: </XFT/INV_S_QMESSAGES> TYPE /XFT/INV_S_QMESSAGES.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /XFT/INV_S_QMESSAGES
  INTO TABLE IT_/XFT/INV_S_QMESSAGES.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /XFT/INV_S_QMESSAGES
*  INTO TABLE @DATA(IT_/XFT/INV_S_QMESSAGES2).
*--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_/XFT/INV_S_QMESSAGES INDEX 1 INTO DATA(WA_/XFT/INV_S_QMESSAGES2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/XFT/INV_S_QMESSAGES ASSIGNING </XFT/INV_S_QMESSAGES>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</XFT/INV_S_QMESSAGES>-ICON = 1.
</XFT/INV_S_QMESSAGES>-MANDT = 1.
</XFT/INV_S_QMESSAGES>-PRO_ID = 1.
</XFT/INV_S_QMESSAGES>-CREATED_AT = 1.
</XFT/INV_S_QMESSAGES>-DB_KEY_COUNTER = 1.

ENDLOOP.

LOOP AT IT_/XFT/INV_S_QMESSAGES INTO WA_/XFT/INV_S_QMESSAGES.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/XFT/INV_S_QMESSAGES-CREATED_BY, sy-vline,
  WA_/XFT/INV_S_QMESSAGES-QUEUE_STATE, sy-vline,
  WA_/XFT/INV_S_QMESSAGES-QUEUE_AGENT, sy-vline,
  WA_/XFT/INV_S_QMESSAGES-EXE_EARLIEST, sy-vline,
  WA_/XFT/INV_S_QMESSAGES-DESCRIPTION, sy-vline,
  WA_/XFT/INV_S_QMESSAGES-DATE_CREATED, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/XFT/INV_S_QMESSAGES 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_/XFT/INV_S_QMESSAGES 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_/XFT/INV_S_QMESSAGES INTO WA_/XFT/INV_S_QMESSAGES.


*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_/XFT/INV_S_QMESSAGES_STR, 
ICON TYPE STRING,
MANDT TYPE STRING,
PRO_ID TYPE STRING,
CREATED_AT TYPE STRING,
DB_KEY_COUNTER TYPE STRING,
CREATED_BY TYPE STRING,
QUEUE_STATE TYPE STRING,
QUEUE_AGENT TYPE STRING,
EXE_EARLIEST TYPE STRING,
DESCRIPTION TYPE STRING,
DATE_CREATED TYPE STRING,
TIME_CREATED TYPE STRING,
STATE_DISPLAY_NAME TYPE STRING,
AGENT_DISPLAY_NAME TYPE STRING,
DATE_EXE_EARLIEST TYPE STRING,
TIME_EXE_EARLIEST TYPE STRING,
MESSAGE_ICON TYPE STRING,
MESSAGE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/XFT/INV_S_QMESSAGES_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_/XFT/INV_S_QMESSAGES_STR-ICON sy-vline 
WA_/XFT/INV_S_QMESSAGES_STR-MANDT sy-vline 
WA_/XFT/INV_S_QMESSAGES_STR-PRO_ID sy-vline 
WA_/XFT/INV_S_QMESSAGES_STR-CREATED_AT sy-vline 
WA_/XFT/INV_S_QMESSAGES_STR-DB_KEY_COUNTER sy-vline 
WA_/XFT/INV_S_QMESSAGES_STR-CREATED_BY sy-vline 
WA_/XFT/INV_S_QMESSAGES_STR-QUEUE_STATE sy-vline 
WA_/XFT/INV_S_QMESSAGES_STR-QUEUE_AGENT sy-vline 
WA_/XFT/INV_S_QMESSAGES_STR-EXE_EARLIEST sy-vline 
WA_/XFT/INV_S_QMESSAGES_STR-DESCRIPTION sy-vline 
WA_/XFT/INV_S_QMESSAGES_STR-DATE_CREATED sy-vline 
WA_/XFT/INV_S_QMESSAGES_STR-TIME_CREATED sy-vline 
WA_/XFT/INV_S_QMESSAGES_STR-STATE_DISPLAY_NAME sy-vline 
WA_/XFT/INV_S_QMESSAGES_STR-AGENT_DISPLAY_NAME sy-vline 
WA_/XFT/INV_S_QMESSAGES_STR-DATE_EXE_EARLIEST sy-vline 
WA_/XFT/INV_S_QMESSAGES_STR-TIME_EXE_EARLIEST sy-vline 
WA_/XFT/INV_S_QMESSAGES_STR-MESSAGE_ICON sy-vline 
WA_/XFT/INV_S_QMESSAGES_STR-MESSAGE sy-vline      INTO ld_text SEPARATED BY SPACE.

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