Posts are provided by the CSS SQL Escalation Services SQL Server 2008 - Resource Governor Questions SQL Server 2008 - Resource Governor Questions Rate This psssql 10 Jan 2008 3:59 AM Comments 2 A couple of common questions have surfaced related to the SQL Server 2008 Resource Governor feature
(In case you are thinking that XML or delimited strings could be an alternative here, permit me to point out that they, too, represent intermediate storage. One is the push model, where you create a rowset with the metadata, fill the rowset with your data, and in the regular parameter area, you pass the rowset pointer
If you have columns that are meant to contain-street address, city, state, and postal code for your customers, and you know that for each customer you'll always have these values, it doesn't make sense to make these columns nullable when you create them. The Common Language Runtime (CLR) in Visual Studio (VS) 2005 makes using nullable columns much easier; for more information about this topic, see the sidebar "NULL and the CLR." However, I don't believe these problems offer enough reason to avoid NULL
First of all, If there is any application which depends on the order of column it is really not good programming and will create problem for sure in future. With the time passing, the developper must add a colum like Deathday, as the life is not eternal, to notify the death of our preferred singer Miachael Kackson for example
I changed the database collation to the correct one and when I ran the process it created a new database and assigned the default (correct) collation to all the columns. If you have any good idea about this subject, I encourage you to write down good small post about the subject and I publish as blog post with due credit to you along with your contact info
Creating NOT NULL Constraints in Microsoft SQL Server
Did you mean ? Thank you,,for signing up! Databases Categories Microsoft Access Structured Query Language (SQL) Microsoft SQL Server Oracle Databases Database Security Issues MySQL Database Administration Database Design Database Development Data Mining and Data Warehousing Database Training Careers in Databases Software and Book Reviews Database Certifications Other Databases Blog Database Basics Learning SQL Using Databases Updated Articles and Resources Expert Videos NOT NULL constraints in Microsoft SQL Server allow you to specify that a column may not contain NULL values
Instead, Enterprise Manager creates a new table that has the new schema with the changed nullability setting, uses an INSERT INTO statement to move the data into the new table, then deletes the old table. If you use SQL Server Profiler to trace the activity of Enterprise Manager, you'll see that Enterprise Manager can issue more than 150 commands that change the nullability of a column
sql server - Why does ALTER COLUMN to NOT NULL cause massive log file growth? - Database Administrators Stack Exchange
But it's clear that - while both the update operation and the addition of the NOT NULL constraint undeniably write to the page - the latter does so in an entirely different way. On databases with one of the snapshot isolation options enabled then the versioning information in each row is updated (@SQL Kiwi points out that this can also occur in databases without SI enabled as described here)
sql server 2008 - Quickly change NULL column to NOT NULL - Database Administrators Stack Exchange
One problem with this is that even if you know the column in fact has no NULLs the constraint is not trusted by the query optimiser which means that the plans can be sub optimal. Adding the constraint with NOCHECK means that no rows will need to be read to verify it, and if you are starting from a position where the column does not contain NULL values (and if you know none will be added between checking and adding the constraint) then, as the constraint prevents NULL values being created from future INSERT or UPDATE operations, this will work
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