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 www.xt-r.com
XT&R blackboard: ???????????? ??????????? ????????? distinct values ?? ???????, ? ????? TopN ??? ???????
| | oracle-randolf.blogspot.com
Oracle related stuff: Getting first rows of a large sorted result set quickly - NOSORT issues
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| | When attempting to display only the first n rows of a result set that is ordered the Oracle optimizer offers special optimizations for these...
| | www.dbaglobe.com
Donghua's Blog - DBAGlobe: Subquery Performance Tuning (Part 2, NOT IN and NOT EXISTS))
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| | A blog about on new technologie. Hands-on note about Hadoop, Cloudera, Hortonworks, NoSQL, Cassandra, Neo4j, MongoDB, Oracle, SQL Server, Linux, etc.
| | antognini.ch
V$SQL_CS_HISTOGRAMS: What Are the Buckets' Thresholds? - Striving for Optimal Performance
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| | sqlmaria.com
How to determine which view is the right view to use in Oracle?
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| Database views are a handy tool to help obfuscate complex joins from developers and analysts. However, knowing which view to use can be tricky, especially when faced with multiple views with simila...