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Allowing Only One NULL
Allowing Only One NULL

Allowing Only One NULL

While the SQL standard allows multiple NULLS in a unique column, and that is how Postgres behaves, some database systems (e.g. MS_SQL) allow only a single NULL in such cases. Users migrating from othe...

Postgres Keywords
Postgres Keywords

Postgres Keywords

You might be aware that the SQL standard reserves certain identifiers that cannot be used for naming user objects. Postgres follows that standard, with slight modifications. For example, you cannot cr...

Wait Event Reporting
Wait Event Reporting

Wait Event Reporting

Postgres often lacks the sophisticated reporting of more established enterprise relational database systems. Sometimes that is because Postgres doesn't require as much monitoring and tuning, but there...