In order for a transaction to meet the requirements of ACID, locks are employed to insure data integrity and multi-user access. The scope, or number of rows held by a lock, is referred to as Lock Granularity. This month, we will begin by introducing several different types of lock modes employed by MS SQL.
2005-09-16
3,544 reads
One important component of tuning a large, heavily used database, is to ensure that the tables are indexed optimally: enough indexing, but not too much indexing for the application you are running. There are rules of thumb about index tuning, but the entire issue is so complex that there's no "silver bullet" solution that will work for every case. However, in tuning indexes we can generally say that it's not a good idea to maintain duplicate indexes on the same data. SQL Server does not provide checks to prevent duplicate indexes from being created, as long as the names are different
2005-09-05
3,192 reads
SQL Server 2000 introduced user-defined functions (UDFs), and they were immediately hailed as a great tool for encapsulating repetitive code, as well as allowing you to perform more complicated processing directly in an SQL expression. On its face, that claim is valid. You can certainly improve readability and maintainability with UDFs. But cleaner code will be cold comfort if your queries bog down and lock up your server.
2005-08-31
3,336 reads
It has not been clear to what extent fragmentation, either internal or external, truly affects the performance of your SQL Server 2000 databases. New author Koby Biller discusses some of the impacts that it could have and has a free tool for download that can help you determine how fragmented your disk truly is.
2005-08-16
9,622 reads
A look at controlling transactions and locks with hints and snapshots in SQL Server 2000 and 2005.
2005-08-12
3,224 reads
2005-08-03
2,031 reads
2005-08-02
2,087 reads
2005-07-29
1,774 reads
Tuning SQL Server for performance is in many ways like constructing a house. You must find a suitable location with rich soil, build a solid foundation to support two or three levels, install the electrical and plumbing, finish the walls for painting and decorating, and finally conduct ongoing maintenance.
2005-07-19
4,034 reads
2005-07-14
1,971 reads
By Steve Jones
This is my last week of the year working (I guess I come back...
By Steve Jones
This is my last week of the year working (I guess I come back...
Want to seriously boost your data skills? Mastering advanced SQL is the key, whether...
Comments posted to this topic are about the item Function Defaults
Comments posted to this topic are about the item Big Data or Small Data
I have created this function in SQL Server 2022:
CREATE FUNCTION dbo.AddInt (@one INT, @two INT = 1) RETURNS INT
AS
BEGIN
RETURN @one + @two
END
How can I call this and invoke the default value for @two? See possible answers