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March 15 – 17 , 2017

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Talks

Talks archive

PgConf.Russia 2017
  • Ainur Timerbaev
    Ainur Timerbaev Aviasales
  • Oleg Ivanov
    Oleg Ivanov PostgresPro

    Query optimization is an important problem, which solution has a great influence on DBMS performance, especially for complex queries. In this talk we consider PostgreSQL query optimizer and specifically cardinality estimation problem for correlated clauses, which is one of the most well-known drawbacks of query optimizers in general. In the talk we propose our solution for this problem which involves machine learning methods and is available for PostgreSQL 9.6 as an extension with a patch. We discuss the experimental evaluation, advantages, disadvantages, and fields of application of the proposed approach as well.

    VIDEO

  • Arthur Zakirov
    Arthur Zakirov PostgresPro
    Teodor Sigaev
    Teodor Sigaev PostgresPro

    Full text search in PostgreSQL is probably the most advanced one among relational DBMS. This tutorial will explain how to setup full text search configurations and dictionaries and how to build a ful text search system using an example of a simple popular science web site, with demonstration of various ranking functions. Also I will tell about new RUM index, which allows to accelerate execution of some kinds of full text queries and implements a new improved ranking function.

  • Gregory Smolkin
    Gregory Smolkin Postgres Professional
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