Tag: administration

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hex, oct, bin integers in PostgreSQL 16

by Pavlo Golub | 12.2022
SQL and integer notations NEW in PostgreSQL 16 - support for non-decimal notation of integer constants! PostgreSQL already has powerful […]

UNION ALL, data types and performance

by Laurenz Albe | 12.2022
  A while ago, I wrote about the performance impact of query parameter data types. Recently I encountered a similar […]

PostgreSQL ERROR: permission denied for schema public

by Hans-Jürgen Schönig | 11.2022
In PostgreSQL 15, a fundamental change took place which is relevant to every user who happens to work with permissions: […]

pgbouncer: Types of PostgreSQL connection pooling

by Hans-Jürgen Schönig | 10.2022
pgbouncer is one of the most widely used tool for connection pooling. At CYBERTEC, we've successfully deployed it in many […]

VACUUM does not shrink my PostgreSQL table

by Hans-Jürgen Schönig | 10.2022
Did you ever wonder why VACUUM does not make your PostgreSQL tables smaller? Did you ever wonder why VACUUM does […]

How to corrupt your PostgreSQL database

by Laurenz Albe | 08.2022
Of course most people do not want to corrupt their databases. These people will profit from avoiding the techniques used […]

Column order in PostgreSQL does matter

by Hans-Jürgen Schönig | 07.2022
I've recently seen some really broad tables (hundreds of columns) in a somewhat inefficiently structured database. Our PostgreSQL support customer […]

Transaction anomalies with SELECT FOR UPDATE

by Laurenz Albe | 06.2022
  I was recently confronted with a nice example of how adding FOR UPDATE to a query can introduce transaction […]

How to cancel a hanging PostgreSQL query

by Laurenz Albe | 05.2022
  Sometimes a PostgreSQL query takes forever. Usually, it is easy to interrupt (cancel) such a statement, but sometimes it […]

PostgreSQL 15: Using MERGE in SQL

by Hans-Jürgen Schönig | 05.2022
It's been many years since the first ideas to implement the MERGE command surfaced on the PostgreSQL mailing list. Now […]
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