sample – select * from depesz;

Waiting for PostgreSQL 12 – Log all statements from a sample of transactions

On 3rd of April 2019, Alvaro Herrera committed patch:

Log all statements from a sample of transactions
 
This is useful to obtain a view of the different transaction types in an
application, regardless of the durations of the statements each runs.
 
Author: Adrien Nayrat

Continue reading Waiting for PostgreSQL 12 – Log all statements from a sample of transactions

Explaining the unexplainable – part 5

In previous posts in this series, I talked about how to read EXPLAIN output, and what each line (operation/node) means.

Now, in the final post, I will try to explain how it happens that Pg chooses “Operation X" over “Operation Y".

Continue reading Explaining the unexplainable – part 5

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Tag: sample

Waiting for PostgreSQL 12 – Log all statements from a sample of transactions

Explaining the unexplainable – part 5