Question

Good day!

Despite the fact LINQ2SQL and ADO.NET Entity Framework exists there were situations when I need to revert to plain old DataSet (not typed) and friends.

While writing SQL for SqlCommand:

• Is it needed to quote field and table names with []?
• Is it good to prefix table names with [dbo]

I use to use this syntax:

SqlCommand command = new SqlCommand("SELECT [Field1], [Field2] FROM [dbo].[TableName]", connection);

May be there is a better way?

Thanks in advance!

Answer 1

There is no need to use [] when you are querying your data form the database.

you use [] when there is space of alias name like

SELECT Field1 as [First Name], Field2 as [Last Name] FROM [dbo].[TableName]

because it gives syntax error

dbo is the schema name that with which your table and the user attached

here is more detail answer
A database schema is a way to logically group objects such as tables, views, stored procedures etc. Think of a schema as a container of objects.

You can assign a user login permissions to a single schema so that the user can only access the objects they are authorized to access.

Schemas can be created and altered in a database, and users can be granted access to a schema. A schema can be owned by any user, and schema ownership is transferable.

You can also read full article on : http://www.quackit.com/sql_server/sql_server_2008/tutorial/sql_server_database_schemas.cfm