ABAP Select data from SAP table MSSXEDEADLCK into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MSSXEDEADLCK
*  INTO TABLE @DATA(IT_MSSXEDEADLCK2).
*--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_MSSXEDEADLCK INDEX 1 INTO DATA(WA_MSSXEDEADLCK2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MSSXEDEADLCK>-DT = 1.
<MSSXEDEADLCK>-TM = 1.
<MSSXEDEADLCK>-PROCESSID = 1.
<MSSXEDEADLCK>-VICTIM = 1.
<MSSXEDEADLCK>-SPID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MSSXEDEADLCK-DB, sy-vline,
  WA_MSSXEDEADLCK-WAITRESOURCE, sy-vline,
  WA_MSSXEDEADLCK-WAITTIME, sy-vline,
  WA_MSSXEDEADLCK-HOSTNAME, sy-vline,
  WA_MSSXEDEADLCK-HOSTPID, sy-vline,
  WA_MSSXEDEADLCK-LOGINNAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MSSXEDEADLCK 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_MSSXEDEADLCK 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_MSSXEDEADLCK INTO WA_MSSXEDEADLCK.


*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_MSSXEDEADLCK_STR, 
DT TYPE STRING,
TM TYPE STRING,
PROCESSID TYPE STRING,
VICTIM TYPE STRING,
SPID TYPE STRING,
DB TYPE STRING,
WAITRESOURCE TYPE STRING,
WAITTIME TYPE STRING,
HOSTNAME TYPE STRING,
HOSTPID TYPE STRING,
LOGINNAME TYPE STRING,
INPUTBUF TYPE STRING,
TXACTNAME TYPE STRING,
OWNEROBJNAME TYPE STRING,
OWNERINDNAME TYPE STRING,
OWNERMODE TYPE STRING,
WAITEROBJNAME TYPE STRING,
WAITERINDNAME TYPE STRING,
WAITERMODE TYPE STRING,
DEADLOCKGRAPH TYPE STRING,
SQLHANDLE TYPE STRING,
STMT_START_OFFSET TYPE STRING,
STMT_END_OFFSET TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MSSXEDEADLCK_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_MSSXEDEADLCK_STR-DT sy-vline 
WA_MSSXEDEADLCK_STR-TM sy-vline 
WA_MSSXEDEADLCK_STR-PROCESSID sy-vline 
WA_MSSXEDEADLCK_STR-VICTIM sy-vline 
WA_MSSXEDEADLCK_STR-SPID sy-vline 
WA_MSSXEDEADLCK_STR-DB sy-vline 
WA_MSSXEDEADLCK_STR-WAITRESOURCE sy-vline 
WA_MSSXEDEADLCK_STR-WAITTIME sy-vline 
WA_MSSXEDEADLCK_STR-HOSTNAME sy-vline 
WA_MSSXEDEADLCK_STR-HOSTPID sy-vline 
WA_MSSXEDEADLCK_STR-LOGINNAME sy-vline 
WA_MSSXEDEADLCK_STR-INPUTBUF sy-vline 
WA_MSSXEDEADLCK_STR-TXACTNAME sy-vline 
WA_MSSXEDEADLCK_STR-OWNEROBJNAME sy-vline 
WA_MSSXEDEADLCK_STR-OWNERINDNAME sy-vline 
WA_MSSXEDEADLCK_STR-OWNERMODE sy-vline 
WA_MSSXEDEADLCK_STR-WAITEROBJNAME sy-vline 
WA_MSSXEDEADLCK_STR-WAITERINDNAME sy-vline 
WA_MSSXEDEADLCK_STR-WAITERMODE sy-vline 
WA_MSSXEDEADLCK_STR-DEADLOCKGRAPH sy-vline 
WA_MSSXEDEADLCK_STR-SQLHANDLE sy-vline 
WA_MSSXEDEADLCK_STR-STMT_START_OFFSET sy-vline 
WA_MSSXEDEADLCK_STR-STMT_END_OFFSET sy-vline      INTO ld_text SEPARATED BY SPACE.

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