To create Synonyms, we can use the GUI of SQL Server Management Studio. In the below query, the base object is in the : EXEC sp_addlinkedserver MyRemoteServer ĬREATE SYNONYM MyProductCatalog FOR MyRemoteServer.Ĭreating a Synonym with SQL Server Management Studio You can create a Synonym to avoid specifying a 4-part name in queries. Suppose the object exists in a remote server. SELECT Ĭreate a Synonym in a Database on the Remote Server It internally references the base table that we referenced in the CREATE SYNONYM statement. Once it is created, you can replace the table name with the Synonym as shown below. The syntax is the following: CREATE SYNONYM įor example, let’s create the synonym for. To create Synonyms in SQL Server, we use the CREATE SYNONYM statement. Create a Synonym in SQL Server in Local Server Also, Synonyms aren’t suitable for Check constraints, computed columns, default expressions, Rule expressions, Schema-bound views, and functions. However, we can’t use Synonyms in data definition language (DDL) statements like Create and Alter. We can use Synonyms in the T-SQL statement, such as Select, Update, Execute, Insert, Delete, and sub-queries. Note: The synonym name should be unique in a database. CLR stored procedure, functions(table-valued, aggregate, scalar).Scalar and inline table-valued functions.You could define a Synonym in SQL Server for the following objects: Users can query Synonyms for retrieving results instead of querying the base table. You can also use Synonyms to conceal the database objects’ names. Once you recreate the Synonym, all SQL queries automatically get the latest object location. If you move an object to a different database, the Synonym helps you to minimize efforts when making changes. In this case, a Synonym will automatically reference the view because object binding happens with the object name. Then, we drop the table and create a view with a similar name. In a different case, we create a synonym that points to table. You won’t need to change any object references in queries because we are using Synonym. Should any changes happen, you only need to recreate the Synonym definition. You can create a Synonym referencing the database object and use it in your SQL queries. Therefore, you need to modify all such references in queries or client applications to use the latest name of the table. This table is referenced in multiple stored procedures, functions, and views. Let’s imagine that you need to rename the. Similarly, a remote server uses the 4-part naming convention. The SELECT statement with the 3-part name is as below: SELECT įROM. The format is:įor example, suppose we have the following database infrastructure:
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In T-SQL scripts, we use 3-part names for referencing database objects.
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Also, they provide an abstraction layer to protect the application from any changes in the base object. A synonyms in SQL Server are database objects that give an alternative name to the database objects existing locally or on the remote server.