Writing PostgreSQL Extensions is Fun – C Language

PostgreSQL is a powerful open source relational database management system. It extends the SQL language with additional features. A DBMS is not only defined by its performance and out of the box features, but also its ability to support bespoke/additional user-specific functionality. Some of these functionalities may be in the form of database constructs or modules, like stored procedures or functions, but their scope is generally limited to the functionality being exposed by the DBMS. For instance, how will you write a custom query-analyzing application that resides within your DBMS?

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