I think it's out of print, unfortunately, but by far the best quick intro I've ever seen is: "The Essence of SQL: A Guide to Learning Most of SQL in the Least Amount of Time" by David Rozenshtein. -- Scott Ribe scott_ribe@xxxxxxxxxxxxxxx http://www.killerbytes.com/ (303) 722-0567 voice ---------------------------(end of broadcast)--------------------------- TIP 9: In versions below 8.0, the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match
