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GAINS AND PITFALLS ARE AMONG THE NEW SEQUENCE FEATURES. 

Artificial numeric primary key columns for tables are created using sequences.
Even if more than one database session is using the sequence at the sam…

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An XMAX contains what?

xmaxis an MVCC (Multiversion Concurrency Control) system column in PostgreSQL. The documentation is rather succinct:

> The identity (transaction ID) …

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PostgreSQL Full Text Search and Vacuum: What It Has To Do With

What is the relationship between PostgreSQL Full-Text Search and VACUUM? Many people might be surprised to find out that there might even be a relatio…

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CGROUPS OF POSTGRESQL LINUX 

cgroups manual page, quote:

> Control groups, usually referred to as cgroups, are a Linux kernel feature which allow processes to be organized into h…

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JOINS, EXPLICIT VS. IMPLICIT POSTGRESQL 

    If you are an SQL developer, you probably already know that joins are the fundamental building blocks of the language. In addition to lateral and left…

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