Slide 17
Slide 17 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