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
131 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
62 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
53 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
31 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
31 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
78 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
17 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
21 reads
Cardinality Estimation – Table Variable Vs Temporary Table in SQL Serve
SQL Server creates and maintains statistics for temporary tables, which lead to better cardinality estimation and optimal execution plan generation. Table variables have no statistics, which can result in...
2016-05-15
17 reads
Understanding ASYNC_NETWORK_IO Waits in SQL Server
In SQL Server, ASYNC_NETWORK_IO wait time can be high due to slow network, like when the database is in the cloud and the application is on premise. Furthermore, it...
2016-05-15
28 reads
Blogs
T-SQL Tuesday #202 Invitation: That One SQL Server Outage You’ll Never Forget
I am excited to host T-SQL Tuesday for the first time. I want to...
A Daily Report from Claude
By Steve Jones
Redgate had some Claude training recently, which I went through as my knowledge has...
A New Word: Gnossienne
By Steve Jones
gnossienne– n. the awareness that someone you’ve known for years still has a private...
Forums
"Click" your SQL Server into an MCP agent, with RBAC and full security
Hi guys and gals, I've created a system that automatically allows you to "generate"...
Demo Tracking Dropped Objects
Comments posted to this topic are about the item Demo Tracking Dropped Objects
Randomly Selecting Columns and Rows from a Table or View
Comments posted to this topic are about the item Randomly Selecting Columns and Rows...
Question of the Day
Getting Database MaiL Profiles
If I want to return information about all Database Mail profiles on my instance from T-SQL, how can I do this?
See possible answers