JavaScript and LINQ are just window dressing for SQL, just like in the construction industry stucco is dressing for (not a replacement for) solid brick.

The expected answer would be similar to the following, although any equivalent and simple set based solution would suffice.

SELECT CustomerID
  , COUNT(*) AS ContactCount

The following is not really a database design question, but more of a baseline SQL query question. It's simple enough that a core SQL developer could easily rattle off the...

Hell, even today there is no broad consensus on when exactly we should start dancing in the streets to celebrate the arrival of the Age Of Aquarius. Some New Age...

So, how to establish a timeline for when data corruption first occurred?

Off the top of my head, the first place I'd look would be error logs, both...

Windowing functions like RANK(), ROWNUMBER(), LAG / LEAD were a giant leap forward. Other more niche functions related to temporal data types and xml / json / regex parsing would...

Some internet service providers allow other customers to piggy back on your wifi router for use as a hotspot, which makes profiling individuals based on their personal browsing history problematic....

When it...

To begin with, according to scientists only about 1.2 % of the human genome is for encoding proteins. I'm sure that eventually scientists can identify a much smaller subset of...