ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,536,170, issued on Jan. 27, was assigned to Progress Software Corp. (Burlington, Mass.).
"Join optimization" was invented by Mohammed Sayeed Akthar (Hyderabad, India), Sunil Jardosh (Hyderabad, India) and Ram Krushna Mishra (Hyderabad, India).
According to the abstract* released by the U.S. Patent & Trademark Office: "A system and method for efficient query processing including determining a first intermediate result set by applying a set operation to a first result set and a second result set, the join query including a join operation on a first table and a second table and including a first condition and a second condition, the first condition based on a first index of the second t...