I don’t think I’ve ever had a great impression of Azure SQL Database as a place for production applications. In its early days, it was missing several important features (like data compression). While that hole has been plugged, there are still other limitations and differences you should be aware o
2024-02-02
Learn about how SQL Server uses locks when modifying data and how data is committed to a database after data changes.
2023-10-23
2023-10-09
466 reads
In any database, mismanagement of transactions often leads to contention and performance problems in systems that have many users. As the number of users that access the data increases, it becomes important to have applications that use transactions efficiently. This guide describes the locking and row versioning mechanisms the SQL Server Database Engine uses to ensure the physical integrity of each transaction and provides information on how applications can control transactions efficiently.
2022-10-05
This article isn’t about the act of lock escalation itself, which is already well documented and generally well understood. Some myths (like row locks escalating to page locks) persist, but challenging those yet again probably wouldn’t change much.
2022-09-19
2021-01-04
641 reads
2020-11-02
513 reads
Learn about the impact of locking and blocking in sessions through some demonstrations of different types of actions.
2020-06-11
7,724 reads
2020-02-20
660 reads
This guide describes the locking and row versioning mechanisms the SQL Server Database Engine uses to ensure the physical integrity of each transaction and provides information on how applications can control transactions efficiently.
2018-05-18
5,850 reads
By Arun Sirpal
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I have this table in SQL Server 2022:
CREATE TABLE CustomerLarge (CustomerID INT NOT NULL IDENTITY(1, 1) CONSTRAINT CustomerLargePK PRIMARY KEY CLUSTERED , CustomerName VARCHAR(20) , CustomerContactFirstName VARCHAR(40) , CustomerContactLastName VARCHAR(40) , Address VARCHAR(20) , Address2 VARCHAR(20) , City VARCHAR(20) , CountryCode CHAR(3) , Postal VARCHAR(20) ) GOIf I check the columns_updated() function return in a trigger, what is the data returned? See possible answers