That solves it then. When I was a fresh cheeked starter at IBM, the grey beards always called it "sequel", whilst we called it "ess queue ell". Always listen to the grey beards
Also, anecdotally it seems like the "sequel" preference is relegated to the old-timer Oracle and SQL Server crowd, whereas the newer Postgres/MySQL/SQLite crowd prefer to call it "ess que ell" (simply because it's the obvious way to say it).
It’s like .JPG files: sure, you can call them ‘Jay Pee Gee’ files, but it’s easier to call them ‘Jay-Pegs’.
"The original name SEQUEL, which is widely regarded as a pun on QUEL, the query language of Ingres,[14] was later changed to SQL (dropping the vowels) because "SEQUEL" was a trademark of the UK-based Hawker Siddeley Dynamics Engineering Limited company.[15] The label SQL later became the acronym for Structured Query Language."
https://en.wikipedia.org/wiki/SQL
Indeed, reading through the paper, I think it's too similar to modern SQL to be considered a different language.