Execute Dynamic SQL commands in SQL Server

In some applications having hard-coded SQL statements is not appealing, because of the dynamic nature of the queries being issued against the database server. Because of this sometimes there is a need to dynamically create a SQL statement on the fly and then run that command. This can be done quite simply from the application perspective where the statement is built on the fly whether you are using ASP.NET , ColdFusion or any other programming language. But how do you do this from within a SQL Server stored procedure? SQL Server offers a few ways of running a dynamically built SQL statement. These ways are: Writing a query with parameters Using EXEC Using sp_executesql Writing a query with parameters This first approach is pretty straightforward if you only need to pass parameters into the WHERE clause of your SQL statement. Let’s say we need to find all records from the Customers table where City = ‘London’. This can be done easily as the following example shows.

How do you delete all records from the file that has 1 million records when the transaction log is full

Use Truncate instead of delete.as this is a minimally logged operation,there may be just enough
space in the transaction log to do the operation.truncate log only the datapage de-allocation not the deletion
of individual records.it is not a non-logged operation

Comments

Anonymous said…
One of the easiest method is to delete existing log file.

Steps :

Detach database,
Stop SQL Services,
Delete or rename ldf file,
Start SQLl Services,
Attach database.

This will automatically create a new blank ldf file. Now you can do whatever you want to do :)

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