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The ACID Properties of Statements & Transactions

 Posted by Paul White on February 27, 2014  6 Responses »
Feb 272014
 

Paul White (@SQL_Kiwi) kicks off a new blog series about ACID – atomic, consistent, isolated, durable – and how many people make incorrect assumptions about how these things work in SQL Server.

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 Tagged with: ACID, concurrency, transactions

Knee-Jerk Wait Statistics : SOS_SCHEDULER_YIELD

 Posted by Paul Randal on February 19, 2014  8 Responses »
Feb 192014
 

Paul Randal (@PaulRandal) of SQLskills continues his series on knee-jerk performance troubleshooting. In this post, he talks about SOS_SCHEDULER_YIELD, and how to determine whether it is a wait to worry about in your scenario.

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 Tagged with: sos_scheduler_yield, spinlock

SQL Server 2014 Incremental Statistics

 Posted by Guest Posts on February 14, 2014  6 Responses »
Feb 142014
 

Benjamin Nevarez (@BenjaminNevarez) takes a close look at the new incremental statistics feature in SQL Server 2014.

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 Tagged with: partitioning, SQL Server 2014, statistics

Best approaches for grouped median

 Posted by Aaron Bertrand on February 11, 2014  7 Responses »
Feb 112014
 

SQL Sentry's Aaron Bertrand (@AaronBertrand) revisits an old post and explores approaches to calculating the median across partitioned sets.

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 Tagged with: Hekaton, in-memory OLTP, median, percentile_cont, row_number, SQL Server 2014

Avoiding Knee-Jerk Performance Troubleshooting

 Posted by Paul Randal on February 3, 2014  5 Responses »
Feb 032014
 

Paul Randal (@PaulRandal) of SQLskills.com starts a new series on knee-jerk troubleshooting, discussing many areas where SQL Server folks jump to conclusions when trying to fix a performance issue.

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 Tagged with: troubleshooting

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