SQL @@TOTAL_WRITE is a System Statistical Function, returns the total disk writes since the last time the SQL server started. The syntax behind this is @@TOTAL_WRITE is
@@TOTAL_WRITE
SQL @@TOTAL_WRITE Example
The following code snippet will show you the total number of disk writes for this SQL Server.
SELECT @@TOTAL_WRITE AS [Total Number of Writes]

You can also use the GETDATE() function along with the Total_write function to see the total writes until today. Learn more about SQL GETDATE from our SQL tutorial page.
SELECT @@TOTAL_WRITE AS [Total Number of Writes], GETDATE() AS [As of Today]

@@TOTAL_WRITE Example 2
In this SQL @@TOTAL_WRITE example, we are using both the Total Writes and Total Reads, along with Today’s date. Please refer to the SQL @@TOTAL_READ and SQL @@TOTAL_ERRORS articles.
SELECT @@TOTAL_WRITE AS [Total Number of Writes], @@TOTAL_READ AS [Total Number of Reads], GETDATE() AS [As of Today]
