SQL String User Function Workbench: part 1

Robyn and Phil go back to basics and hammer out some basic String-handling User Functions in TSQL, based on Python examples. Plenty of sample code, and TSQL programming tricks.

Remove Duplicate Records

To remove duplicate records with out using temporary tables.

T-SQL Query

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