Sql server change nullable column to not null

Top sites by search query "sql server change nullable column to not null"

  http://blog.sqlauthority.com/2009/10/19/sql-server-change-collation-of-database-column-t-sql-script-consolidating-collations-extention-script/
The orders in which these are executed are as follows: Table Functions Unique Constraints Check Constraints Indexes You must also edit this script to use your desired collation. Download all scripts and explanation here About Collation Consolidation At some time in your DBA career, you may find yourself in a position when you sit back and realize that your database collations have somehow run amuck, or are faced with the ever annoying CANNOT RESOLVE COLLATION message when trying to join data of varying collation settings

  http://blog.sqlauthority.com/2008/12/20/sql-server-change-collation-of-database-column-t-sql-script/
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

  http://sqlmag.com/sql-server-2000/designing-performance-null-or-not-null
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

sql server 2008 - Quickly change NULL column to NOT NULL - Database Administrators Stack Exchange

  http://dba.stackexchange.com/questions/48872/quickly-change-null-column-to-not-null
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

sql server - Why does ALTER COLUMN to NOT NULL cause massive log file growth? - Database Administrators Stack Exchange

  http://dba.stackexchange.com/questions/29522/why-does-alter-column-to-not-null-cause-massive-log-file-growth
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)