Extended Event Locks Lock Waits in SQL Server
When it comes to lock waits, one of the important information we need to know is which statement waited for locks and how long. This is possible with extended...
2016-05-15
122 reads
Extended Event Query Post Execution Showplan in SQL Server
Query Post Execution Showplan event is a very useful event to find problematic queries and execution plans based on CPU usage or duration while analyzing performance issues. It can...
2016-05-15
55 reads
Filtered Statistics in SQL Server
In SQL Server, Filtered Statistics can improve cardinality estimation, i.e. when joining lookup table, or while joining fact table and dimension table. For this reason, SQL Server supports the...
2016-05-15
12 reads
In-Memory OLTP Memory Optimized Table Variables Vs Disk Based Table Variable in SQL Server
Starting SQL Server 2014, it is possible to use memory optimized table variables. These are table variables declared using a table type which is memory optimized. Memory optimized table...
2016-05-15
24 reads
Optimize for Ad Hoc Workloads – SQL Server Configuration Parameter
SQL Server configuration parameter “optimized for ad hoc workloads” can be very useful when you execute lots of single use ad hoc statements or dynamic SQL statements by reducing...
2016-05-15
22 reads
PAGELATCH Waits with Update Statements in SQL Server – PAGELATCH_EX and PAGELATCH_SH
In SQL Server, concurrent writes or read / write to the same page can lead to PAGELATCH (like PAGELATCH_EX and PAGELATCH_SH) waits or what is knowns as PAGELATCH contention....
2016-05-15
38 reads
Parallel Insert Into – Table Variable Vs Temporary Table in SQL Server
In SQL Server, for insert into select statements, when the target for insert into is temporary table, the select statement can execute in parallel. When the target is table...
2016-05-15
18 reads
Seek or Scan – Cost Based Optimizer in SQL Server
When SQL Server has a choice of plans, it will compare the cost among a set of execution plans and will choose the cheapest one. In some cases, even...
2016-05-15
30 reads
Temp Table Caching in SQL Server
SQL Server caches temporary objects (temporary tables and table variables), that are created in a stored procedure. Temporary objects that are created either in dynamic SQL statement or by...
2016-05-15
70 reads
Tempdb Allocation Contention in SQL Server
In SQL Server, the concurrent creation of temporary objects (temporary tables and table variables) from many sessions can lead to tempdb allocation contention. This contention occurs on PFS and...
2016-05-15
24 reads
Blogs
KDA: Echoes of Deception - Case 6
By Zikato
A cryptic message, a book cipher hidden in art provenance records, and a trail...
Capturing My Own Metrics: #SQLNewBlogger
By Steve Jones
A customer was trying to compare two tables and capture a state as a...
Red Flags in Your Query (T-SQL Tuesday #200)
By Zikato
When I'm looking at a query, I bet it's bad if I see... a...
Forums
A Quick Second Opinion
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Five Intelligent Query Processing Features in SQL Server 2022 That Quietly Tune Your Workload
Comments posted to this topic are about the item Five Intelligent Query Processing Features...
Checking the Error Log I
Comments posted to this topic are about the item Checking the Error Log I
Question of the Day
Checking the Error Log I
On my SQL Server 2025, I want to search the error log from my T-SQL code for potential issues and then inform an administrator. What is the current way to easily query the error log?
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