![]() The official documentation explains that a sequence is nothing more than a number generator. Delving into the out-of-sync sequence problem in Postgres What is a Postgres sequence? We will learn about sequences, see what circumstances lead to the out-of-sync issue, learn how to diagnose the problem, and finally solve it. In this article, we'll teach you about the out-of-sync issue and show you how to solve it. Postgres even returns a confusing error message when this happens. Specifically, Postgres sequences are prone to go out of sync, preventing you from inserting new rows. Yet, Postgres has some well-known issues, and one of the most annoying ones involves sequences. ![]() It's particularly appreciated by the developer community because it supports both SQL and JSON querying, making it is both relational and non-relational compliant. Postgres is one of the most advanced and widely used open-source RDBMS (Relational Database Management Systems) in the world. ![]()
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