Giving Permissions through Stored Procedures

QL 2005 adds two new methods – signing with certificates and impersonation with EXECUTE AS – that can manage cases where the classic method of ownership chaining fails. I explain the two new methods, as well as the old one, and warns you about the pitfalls.

Calculate Age

This a function by which you can calculate the age of something.

Joining to the Next Sequential Row

One of the more obscure requirements that a developer may find themselves facing is the need to compare a row with its immediate sibling. One such case is when a list of values needs to be processed to produce a moving average or to smooth a sequence of statistical numbers where their order is important. For example, values lying along a time line. The solution is actually quite simple, but not immediately obvious.

Query

ORDER BY

Dynamic Search Conditions

ow to write a stored procedure that permits users to select among many search conditions, using both dynamic and static SQL.

Calculate Easter Date

A function to calculate the date for Easter Sunday for a given year

Using the CASE expression instead of dynamic SQL

I have a lot of SQL update queries where I need to make IF/ELSE types of decisions. I am using a cursor in some cases but looping through thousands of rows for update takes a long time. I also use some dynamic SQL to handle some query parameter decision making. Is there a better alternative?

Operators

Linking to the Previous Row

One common problem in querying is to reference the previous row in a data set as part of a calculation. David McKinney brings us an interesting solution using SQL Server 2005.