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Collation is a set of rules that tell database engine how to compare and sort the character data in SQL Server. Collation can be set at different levels in SQL Server.

Collation refers to a set of rules that determine how data. is sorted and compared. Character data is sorted using rules that define the. correct character sequence, with options for specifying case-sensitivity, accent. marks, kana character types and character width.

You can use the COLLATE clause to apply a character expression to a certain collation. Character literals and variables are assigned the default collation of the current database. Column references are assigned the definition collation of the column.

You can change the collation of any new objects that are created in a user database by using the COLLATE clause of the ALTER DATABASE statement. This statement does not change the collation of the columns in any existing user-defined tables. These can be changed by using the COLLATE clause of ALTER TABLE.

You can set the collation by adding the T-SQL COLLATE clause to the CREATE TABLE and ALTER TABLE statements. When you use those statements, you define the column and its properties, including any collation settings.

To view the collation setting of a database In Object Explorer, connect to an instance of the Database Engine and on the toolbar, click New Query. In the query window, enter the following statement that uses the sys. databases system catalog view. SELECT name, collationname FROM sys.

You can specify collations for each character string column using the COLLATE clause of the CREATE TABLE or ALTER TABLE statement. You can also specify a collation when you create a table using SQL Server Management Studio. If you do not specify a collation, the column is assigned the default collation of the database.