As explained above, the expression in such a statement is evaluated by means of an SQL SELECT command sent to the main database engine. The expression must yield a single value. If the expression's ...

In this section and the following ones, we describe all the statement types that are explicitly understood by PL/pgSQL. Anything not recognized as one of these statement types is presumed to be an SQL ...

Some of the environment variables that are accepted by the Python interpreter can also be used to affect PL/Python behavior. They would need to be set in the environment of the main PostgreSQL server ...

原创 最新推荐文章于 2026-06-27 14:28:51 发布 · 2.3k 阅读 本专栏系统讲解PostgreSQL中级核心知识。涵盖参数优化、体系结构、备份恢复、流复制、性能调优等生产环境必备技能，帮助开发者突破技术 ...