Daniel Westermann

Setting up MiniShift

Currently we have many requests to support customers in running PostgreSQL in Docker containers. Some of those use redhat OpenShift as the management platform for their Docker deployments. Setting up an OpenShift cluster requires quite some resources and(…)

Can I do it with PostgreSQL? – 19 – Create user … identified by values

Puh, that last post in this series is already half a year old. Time is moving too fast :( Today, while being at a customer again, this question came up: Can I do something comparable in PostgreSQL(…)

2018.pgconf.de, recap

Finally I am home from pgconf.de in Berlin at the beautiful Müggelsee. Beside meeting core PostreSQL people such Devrim and Bruce, Andreas and joining Jan again for great(…)

Insert…on conflict with partitions finally works in PostgreSQL 11

Another partitioning improvement for PostgreSQL 11: Insert...on conflict is now supported (for most cases) in PostgreSQL 11 thanks to this commit. Lets see how it works.

The WAL segment size becomes changeable in PostgreSQL 11

Up to PostgreSQL 10 the wal segment size was fixed once PostgreSQL was compiled and installed. When you wanted to have something else than the default you needed to tell that to the configure command when building from source, e.g.

The same MAC address for two interfaces on the same host?

Yes, sounds strange, but exactly this is what we faced today. In the end it is clear and not strange anymore but for a moment we really thought we are hitting a bug in the operating system, which was RedHat(…)

When you execute the same statement thousands of times -> prepare it

Every time you send a SQL statement to PostgreSQL it must be parsed. Parsing is fast, yes, but parsing the same statement a thousand times can quickly sum up to quite some time the database could spend for something else.

Updating the partition key now works in PostgreSQL 11

In the last post about partitioning improvements in PostgreSQL 11 we talked about unique indexes and primary keys on partitioned tables. Both did not work in PostgreSQL 10 but now do in PostgreSQL 11. Another operation that(…)

What is the maximum in list size in PostgreSQL?

Yesterday, while being at a customer, an interesting question popped up: What is the maximum of in list values in PostgreSQL? I couldn't answer although I never read somewhere that there is a limit. The following is for fun only(…)

Local partitioned indexes in PostgreSQL 11

When declarative partitioning was introduced with PostgreSQL 10 this was a big step forward. But as always with big new features some things do not work in PostgreSQL 10 which now get resolved in PostgreSQL 11. One of those are(…)