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 postgrespro.com
Queries in PostgreSQL: 4. Index scan : Postgres Professional
| | www.sagargv.com
How to read a query plan from Postgres EXPLAIN
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| | use-the-index-luke.com
Index INCLUDE Clause: How it works and when to use it
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| | The INCLUDE clause for CREATE INDEX is available in some SQL databases: Microsoft SQL Server, PostgreSQL, and IBM Db2 (LUW)
| | pganalyze.com
How Postgres Chooses Which Index To Use For A Query
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| | How the Postgres planner breaks down a query into scans and how this impacts indexing choices
| | 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.