Finding Physical Row Location

Wayne Sheffield shows how to find the physical location of a row in SQL Server:

Acquiring the physical location of a row

SQL Server 2008 introduced a new virtual system column: “%%physloc%%”. “%%physloc%%” returns the file_id, page_id and slot_id information for the current row, in a binary format. Thankfully, SQL Server also includes a couple of functions to split this binary data into a more useful format. Unfortunately, Microsoft has not documented either the column or the functions.

Read on for two functions you can use to format this data more nicely, as well as a short re-write Wayne did to improve performance of one of them.

Related Posts

Data File Migration With Minimal Downtime

Nate Johnson weaves a yarn around moving from one storage system to another with minimal downtime: Our ERP database has been chosen by the IT gods to get moved to the shiny new flash storage array, off the old spinning-rust SAN.  This is fantastic news for the business users.  But lo, the executives warn us, […]

Read More

Failed To Open Loopback Connection

Arun Sirpal diagnoses a connection problem: I could not read my error log on one of my local SQL Servers, when I executed the following code: EXEC sp_readerrorlog I received the below: Msg 22004, Level 16, State 1, Line 2 Failed to open loopback connection. Please see event log for more information. Msg 22004, Level 16, State […]

Read More

Categories

March 2017
MTWTFSS
« Feb Apr »
 12345
6789101112
13141516171819
20212223242526
2728293031