Agile Needs People Skills

Agile Needs People Skills Every company, colleague, academic or friend I speak to these days has a concern about complexity and the accelerating pace of change, both of which are leading to high levels of uncertainty. In Nik Gowing and Chris Langdon’s excellent 2016 report for the Chartered Institute of Management Accountants – ‘Thinking The […]
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Keep Your Certificates Up To Date

Someone from a major aerospace manufacturer asked me for some cybersecurity assistance a few months ago. A security audit had resulted in a worrying but mystifying warning about SSL certificates. Their secure web site would cease functioning in just a few days. We fixed that, but similar deadlines are approaching over the next two years […]
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What is a False Flag?

The other day I watched a World War II documentary on internet TV. The story was about a British ship attempting to get past Nazi defenses by altering its deck profile and flying the Reichkriegsflagge or ensign of the Kriegsmarine – the German navy. As part of the rules of war, they had to switch […]
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Subqueries, Real and Apparent

Part III – A Look at a “Physical” Subquery Perhaps I am being a little loose in my terminology, since there really isn’t a query operator called “subquery”. When I say “physical subquery” I am referring to those correlated subqueries where the subquery portion must be executed again and again, once for every row returned […]
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Subqueries, Real and Apparent

Part II – The Table Spool In the previous installment, we looked at a very simple logical subquery that SQL Server executed as a physical join. We shall now take a look at a somewhat more complicated query and see what SQL Server does with it. In this query, we would like to get a […]
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