Inventor
CHENG QI
US31 patents
⚠️ This page may combine multiple inventors who share the name “CHENG QI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
IBM
9 patentsUS7275056B2Sep 25, 2007
System and method for transforming queries using window aggregation
IBM21 citations92
US7240078B2Jul 3, 2007
Method, system, and program for query optimization with algebraic rules
IBM30 citations92
US7188116B2Mar 6, 2007
Method and apparatus for deleting data in a database
IBM33 citations92
US7917502B2Mar 29, 2011
Optimized collection of just-in-time statistics for database query optimization
IBM22 citations88
US7945557B2May 17, 2011
Method, system, and program for query optimization with algebraic rules
IBM16 citations84
US7788241B2Aug 31, 2010
Method for reducing overhead of validating constraints in a database
IBM15 citations79
US10157204B2Dec 18, 2018
Generating statistical views in a database system
IBM2 citations72
US7454416B2Nov 18, 2008
Method for aggregation subquery join elimination
IBM4 citations62
US7966314B2Jun 21, 2011
System for aggregation subquery join elimination
IBM4 citations61
GREE ELECTRIC APPLIANCES INC ZHUHAI
3 patentsUS11585561B2Feb 21, 2023
Control method and device for air conditioning system and air conditioning system
GREE ELECTRIC APPLIANCES INC ZHUHAI0 citations47
US11408634B2Aug 9, 2022
Control method and device for controlling air conditioning unit, and air conditioning unit
GREE ELECTRIC APPLIANCES INC ZHUHAI0 citations47
US11639817B2May 2, 2023
Heat exchanger, air conditioner, and refrigerating unit
GREE ELECTRIC APPLIANCES INC ZHUHAI0 citations41