Locks And Partitioning

Erik Darling looks at the confusing mess that is SQL Server partitioning:

In the Chicago perf class last month, we had a student ask if partition level locks would ever escalate to a table level lock. I wrote up a demo and everything, but we ran out of time before I could go over it.

Not that I’m complaining — partitioning, and especially partition level locking, can be pretty confusing to look at.

If you really wanna learn about it, you should talk to Kendra — after all, this post is where I usually send folks who don’t believe me about the performance stuff.

Click through for that demo and explanation.

Related Posts

Rotating Out Partitions

Kendra Little explains that there are a couple of models available for partitioned table management: I recently received a terrific question about table partitioning: I’m writing up a proposal for my company to start partitioning a 2.5TB table. The idea/need is to control the size of the table while saving the old data. The old […]

Read More

Switching Partitions And Table Structure

Andrew Pruski demonstrates a gotcha when switching partitions between tables: When working with partitioning the SWITCH operation has to be my favourite. The ability to move a large amount of data from one table to another as a META DATA ONLY operation is absolutely fantastic. What’s also cool is that we can switch data into a non-partitioned table. Makes […]

Read More

Categories

December 2017
MTWTFSS
« Nov Jan »
 123
45678910
11121314151617
18192021222324
25262728293031