FREEZE

Freezing is this process of marking old live tuples. Selects aggressive “freezing” of tuples. uSpecifying FREEZE is equivalent to performing VACUUM with the vacuum_freeze_min_age and vacuum_freeze_table_age parameters set to zero.
Aggressive freezing is always performed when the table is rewritten, so this option is redundant when FULL is specified. Syntax: 
vacuum freeze table_name;
vacuum full freeze table_name;
vacuum freeze table_name (column_name);
vacuum full freeze table_name (column_name);


(Analyze)