All well-known open-source products (such as MySQL, Spark, and Presto) have optimizers. This article explains the principle of SQL optimizers with an easy-to-understand approach.
This blog introduces the AnalyticDB for PostgreSQL Auto Analyze Feature and discusses how it helps users collect more accurate statistical information.
This article shows how PostgreSQL, equipped with both GIN indexes and the cost-based optimizer (CBO), can automatically choose the most optimal query method.
