Once upon a time Oracle only had a RULES based optimizer Given a query it would work out what indexes to use , what order to join tables using. Loading DocCommentXchange Loading DocCommentXchange.
Oracle hint force index unique scan.
Nov 26, 2008 ISTQB ADVANCED LEVEL EXAM Static Testing Static testing is a form of software testing where the software isn t actually used This is in contrast to.
I m trying to understand how no index actually speeds up a query , haven t been able to find documentation online to explain it For example I have this query that.
The index fss Hint The index fast full scan is used in cases where a query can be resolved without accessing any table member not to confuse the index fast. Last week my colleaguePaul Reed my new content provider with issues on his databases, had a problem where he needed to identify which baseline was using.
The errata list is a list of errors , their corrections that were found after the book was printed The following errata were submitted by our readers , approved
Feb 16, 2011 Hello, cently I tried awell known trick to create a primary key constraint in parallel At first I created a unique index in parallel. A couple of additional points: Outlines and SQL Profiles both take the same approach to controlling execution plans They both attempt to force the optimizer down a.
Every row in a heap organized table has a rowid unique to this table that corresponds to the physical address of a row piece A rowid is a 10 byte physical address of. Note: The demos on this page are intended to show valid syntax but it is far easier to use a hint to make a mess of things than it is to improve things.
I doubt that it was pushing predicate in the first case, because it would be in the plan More likely it was merging which is controlled by MERGE NO MERGE hints.