PT-03 What is a Optimizer Statistics in Postgresql
In PostgreSQL, optimizer statistics refer to the data and metadata that the PostgreSQL query optimizer uses to determine the most efficient execution plan for a given query.
These statistics include information such as the number of distinct values in a column, the correlation between columns, the distribution of data within a column, and more. The optimizer uses this information to estimate the cost of different query plans and chooses the one with the lowest estimated cost.
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