If i have a query which is doing a search on column patientnumber, and my covering index has patientname in key columns and patientnumber,address and SSN in include columns. Would this index be as good as having a index with patientnumber in key column?
If you have SSN in plain text, especially with all that other sensitive information, your company may be breaking several regulations. At the very least, it could be a serious violation of 2 PCI regulations and you're probably subject to PCI regulations because you allow patients and other customers to pay with credit cards.
Please see items #3 and #10 in the following for the regulation areas that most offenders end up breaking. No slight meant to your personal integrity but a programmer or even a DBA shouldn't have general access to such information. The easiest way to comply is to encrypt the SSN with a decent one way hashing algorithm that has lots of "salt" added.https://en.wikipedia.org/wiki/Payment_Card_Industry_Data_Security_Standard
is pronounced ree-bar and is a Modenism for R
First step towards the paradigm shift of writing Set Based code: Stop thinking about what you want to do to a row... think, instead, of what you want to do to a column.
Although they tell us that they want it real bad, our primary goal is to ensure that we dont actually give it to them that way.
Although change is inevitable, change for the better is usually not.
Just because you can do something in PowerShell, doesnt mean you should. Helpful Links:
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