Oracle Associate / Disassociate Statistics Version 19.3
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Data Dictionary Objects
Use the ASSOCIATE STATISTICS statement to associate a statistics type (or default statistics) containing functions relevant to statistics collection,
selectivity, or cost with one or more columns, standalone functions, packages, types, domain indexes, or indextypes.
For a listing of all current statistics type associations, query the USER_ASSOCIATIONS data dictionary view.
If you analyze the object with which you are associating statistics, then you can also query the associations in the USER_USTATS view.
Create Column Association
ASSOCIATE STATISTICS WITH COLUMNS <schema.table.column>
[WITH <SYSTEM | USER> MANAGED STORAGE TABLES];