22-25 April 2026 
SQLBits 2018
The stuff about Joins they didnt teach you in school
Logical v Physical, Semi Joins, Lookup Joins, Redundant Joins - there is so much more to joins than you may have considered, and yet they are so fundamental to almost every query you ever write.
Joins are a thing you learn on Day 1 of T-SQL 101. But they are so much more involved than what you learned then. Logical v physical, Semi Joins, Lookup Joins, Redundant Joins, not to mention those times when you thought you specified one kind of join and the execution plan says it's doing something else.
Luckily, it's not magic - it's all very straightforward once you understand the different types of joins and how they work. This session will cover the different types of logical and physical joins - and even look at joins that don't exist at all.
Luckily, it's not magic - it's all very straightforward once you understand the different types of joins and how they work. This session will cover the different types of logical and physical joins - and even look at joins that don't exist at all.
Speakers
Rob Farley's previous sessions
The stuff about Joins they didnt teach you in school
Logical v Physical, Semi Joins, Lookup Joins, Redundant Joins - there is so much more to joins than you may have considered, and yet they are so fundamental to almost every query you ever write.
Where the bl**dy h*** are you? (Spatial Data Visualisation)
A look at spatial data visualisation, including the maps in SSRS 2008 R2, handling shapefiles for those of us who have to deal with maps outside the USA, geocoding addresses with Bing, using the Silverlight Bing Maps control, and even PivotViewer.
Understanding SARGability (to make your queries run faster)
SARGability relates to the ability to search through an index for a value, but many DB Pros don’t really get it – especially in regard to joins – leading to queries which don’t run as well as they should. No slides here, just demos...