'2 relation plans' presentation slideshows

Overview of Query Optimization

290 views • 22 slides

Relational Query Optimization

Relational Query Optimization. Query Processing: Topic 2. Overview of Query Optimization. Plan : Tree of R.A. ops, with choice of alg for each op.

334 views • 21 slides

Relational Query Optimization

Relational Query Optimization. Query Processing: Topic 2. Overview of Query Optimization. Plan : Tree of R.A. ops, with choice of alg for each op.

219 views • 21 slides

Query Rewrite: Predicate Pushdown (through grouping)

Query Rewrite: Predicate Pushdown (through grouping). Select bid, Max(age) From Reserves R, Sailors S Where R.sid=S.sid GroupBy bid Having Max(age) > 40. Select bid, Max(age) From Reserves R, Sailors S Where R.sid=S.sid and S.age > 40 GroupBy bid.

255 views • 16 slides