Reads files that are created by the Extended Events asynchronous file target. One event, in XML format, is returned per row.
Transact-SQL Syntax Conventions
sys.fn_xe_file_target_read_file (path, mdpath, initial_file_name, initial_offset)
The path to the files to read. path can contain wildcards and include the name of a file. path is nvarchar(260). There is no default.
The path to the metadata file that corresponds to the file or files specified by the path argument. mdpath is nvarchar(260). There is no default.
The first file to read from path. initial_file_name is nvarchar(260). There is no default. If null is specified as the argument all the files found in path are read.
initial_file_name and initial_offset are paired arguments. If you specify a value for either argument you must specify a value for the other argument.
The offset in the first file where reading begins. initial_offset is bigint. If null is specified as the argument the entire file will be read.
The event module GUID. Is not nullable.
The event package GUID. Is not nullable.
The name of the event. Is not nullable.
The event contents, in XML format. Is not nullable.
The name of the file that contains the event. Is not nullable.
The offset of the block in the file that contains the event. Is not nullable.
Requires VIEW SERVER STATE permission on the server.
A. Retrieving data from file targets
The following example gets all the rows from all the files. In this example the file targets and metafiles are located in the trace folder on the C:\ drive.
select * from sys.fn_xe_file_target_read_file('C:\traces\*.xel', 'C:\traces\metafile.xem', null, null)
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