title: seeking the truth about ad hoc join costs. authors: amit shukla , miron livny , michael j. carey , laura m. haas. venue: vldb j.. year: 1997
title: sing the truth about ad hoc join costs. authors: laura m. haas , michael j. carey , miron livny , amit shukla. venue: the vldb journal -- the international journal on very large data bases. year: 1997