Update actions (with user name) inside PostgreSQL DB - any version on postgreSQL

Hi

Is it possible to have an update query that will specify actions,
timestamp, user who’s making the update inside the database. Can this be
done without any script but just in the transaction block

Example:

dbtest=# UPDATE table test set t4 = 9 where t1 = 001 then specify
user_name, timestamp() ;

Thanks in advance

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