Slide 16
Slide 16 text
SQL X QUEL
"Along those lines, there was this whole other development, which was the INGRES
project at U.C. Berkeley. The INGRES project had a language called QUEL. They
started a company that implemented QUEL.
QUEL fought SQL tooth-and-nail, and explained how QUEL was better than SQL in
many different ways, and in fact it is better at doing aggregates. There are lots of
areas where QUEL is better. Some people at Ingres now feel that the reason that
they were less than successful is because they fought SQL rather than embraced it,
so this gave Oracle a chance to differentiate themselves. "
Jim Gray, em “The 1995 SQL Reunion: People, Projects, and Politics”
https://www.mcjones.org/System_R/SQL_Reunion_95/SRC-1997-018.pdf