Since we have created the CS collation the collation here is showing CS. To check the collation, expand the database then right-click on a table then go to the property menu and check the extended property.
In this way we can change the collation of a database and work depending on our requirements, similarly, we can change our Column collation. Mainly there are various rules or collations that exist in SQL Server but we need to know the following 2 main collations. Now here I am selecting a record with case insensitive id but this will work because our database that is "Mydb1" is created with case insensitive collation. What is collation Collation is nothing but a set of rules that are predefined in SQL Server that determine how the data in SQL Server are stored, retrieved and compared. Now if we create another database with case insensitive collation then creating the same student table and adding same records there. Here the database collation is case sensitive and my query id is not in the proper case as per my record so I am getting the result like this. Here I have created a database mydb with case sensitive collations with the following table and records. Here we are giving an example of both types of collations. Thus to overcome this problem we need to use the collate manually in our database or in our column of a table. If only the data is in the the same cases then what I will do is fetch the data and check if only the spelling is correct. Here we have a requirement in my project for a log in the form and I need to match the data. Since SQL Server is case insensitive all the databases in it are also case insensitive. So by default in SQL Server the collation is case insensitive and that's why it does not worry about any cases, so it is case insensitive. Mainly there are various rules or collations that exist in SQL Server but we need to know the following This is because of the following things that you are choosing during the installation of SQL Server.Ĭollation is nothing but a set of rules that are predefined in SQL Server that determine how the data in SQL Server are stored, retrieved and compared. Here the answer is yes because SQL Server is case insensitive. Would the Query execute and provide the result since my item name cases are different? Now we want to retrieve one record using the following query. The item names are both case sensitive and case insensitive. So the containment setting changed the default collation to the user-database’s default instead of the SQL Server instance level default.Before getting deep into the topic let's show you an existing feature of SQL Server.Ī stock table just focusing on the item names. If I execute sp_help for #DemoCollation2 in tempdb, I also see that the Collation is French_CS_AI. This time I get results instead of a collation error:
SQL COLLATE CODE
The following code creates a partially contained database and sets up the same test (different database): In order to demonstrate a partially contained database, I’ll execute sp_configure as follows:ĮXEC sp_configure ‘contained database authentication’, 1 Now let’s see what happens for a contained database. Next I’ll look at sp_help for each table (regular and temporary):Īs our error suggested, the DemoCollation had a collation of French_CS_AI for the DemoCollationNM varchar data type column, but a SQL_Latin1_General_CP1_CI_AS collation for the DemoCollationNM column in the #DemoCollation table. This returns the following error message:Ĭannot resolve the collation conflict between “SQL_Latin1_General_CP1_CI_AS” and “French_CS_AI” in the equal to operation. Now I’ll execute a query that joins the two tables based on the column name: Notice that in addition to designating CONTAINMENT = NONE, I used a collation that was different from the SQL Server instance default.Īnd next, I’m going to create two tables – one regular table and one temporary in the newly created database, and then insert identical rows: Next I’ll create a database that does NOT allow containment, so you can see the pre-2012 behavior: This returns SQL_Latin1_General_CP1_CI_AS.
I’ll start by executing the following in order to determine the default collation of the instance: I see this new behavior as a benefit, but rather than tell you about it, I’ll step through a demonstration instead.įirst of all, this demonstration is on SQL Server (SQL Server 2012 RC0).
This question is tagged with sql-server database collation. The SQL Server 2012 contained database feature has an interesting behavior when it comes to collation considerations between the SQL Server instance default collation and a user database collation. Searching through internet I find solutions to use COLLATE, but the concept of COLLATE is.
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