Hints are options or strategies specified for enforcement by the SQL Server 2005 query processor on SELECT, INSERT, UPDATE, or DELETE statements. The hints override any execution plan the query optimizer might select for a query.
index covering" of a query means when all the columns used in the select and where clause are used as an index to boost up the performance as data that we need to fetch will be directly picked up by covered index.
Can we generate a trigger for two tables? if so what is the query to generate a trigger for two tables employee table and department table with employee having department no.
I was asked in an interview... "Suppose u have a field with UNIQUE KEY. can u leave two or more cells NULL in SQL Server 2005...If Yes then Why...if NOT then Why.....