Postgresql与Oracle中的dbms_stats.gather_table_stats等效什么？

Question

I have some question about Postgres, I have used dbms_stats.gather_table_stats for performance optimization in Oracle. I would like to switch our database from Oracle to Postgres, therefore, I want to achieve same feature on Postgres also. I searched internet whether there is some equivalent feature existing in Postgres with dbms_stats.gather_table_stats in Oracle. The only I found was EXPLAIN, VACUUM something like that. I think these are already existing in Oracle with same name. but I can't find proper ones for dbms_stats.gather_table_stats. I am spedning a lot time on it, if you guys have some advice, could I get some?

Answer 1

The GATHER_TABLE_STATS procedure of DBMS_STATS package collects statistics of the specified table in Oracle.

In Postgres, we use ANALYZE for the same purpose.

ANALYZE collects statistics about the contents of tables in the database, and stores the results in the pg_statistic system catalog. Subsequently, the query planner uses these statistics to help determine the most efficient execution plans for queries.