READPAST Hints

Arun Sirpal explains the READPAST hint:

So, as the name of the hint suggests, it literally does “readpast” it.

I’ve never used READPAST in any production code.  I suppose there are good reasons to use it, but I haven’t run into any yet.

Related Posts

VARCHAR Size And Memory Grant Estimates

Arthur Daniels shows us a good reason for using better data sizes than just VARCHAR(MAX) everywhere: That’s a lot of desired memory, 1,493,120 KB aka 1.4 GB, but there was only 25 MB used in the sort. So why was SQL Server so far off the right estimate? It’s the data types we picked. That’s a […]

Read More

Visualizing Hash Match Joins

Bert Wagner continues his series on visualizing physical join operators: Hash Match joins are the dependable workhorses of physical join operators.While Nested Loops joins will fail if the data is too large to fit into memory, and Merge Joins require that the input data are sorted, a Hash Match will join any two data inputs […]

Read More

Categories

December 2016
MTWTFSS
« Nov Jan »
 1234
567891011
12131415161718
19202122232425
262728293031