Adding to that, in the mid-1980s I worked at a company called Gupta Technologies, founded by Umang Gupta and Bruce Scott of Oracle. Their first product was SQL

Adding to that, in the mid-1980s I worked at a company called Gupta Technologies, founded by Umang Gupta and Bruce Scott of Oracle. Their first product was SQLBase, pronounced "sequel base". The next product, which I worked on, was SQLWindows, pronounced "sequel windows". We knew that some people pronounced SQL "ess cue ell", but no one at the company pronounced it that way, ever.