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Hello all,

I've been trying to figure a few things lately but I could not so I'm asking on the list. I need to programmatically (through JDBC):

1. Figure out if the currently logged in user can create a schema
2. Figure out if a role has USAGE privileges on a schema
3. Figure out if a role has CREATE privileges on a schema
4. Figure out if a user can create a table in a schema

I've been reading the online docs but I could nowhere see any examples of finding out that information through the information_schema schema. I was advised not to poke around with the pg_* schemas since they can change frequently. What I need to do is basically ensure that a user can create a schema, then create some tables in that schema and ensure that other users can access these later. Is is possible that a user can be given for example SELECT privileges to a table in a schema but he/she would not be able to access the table because they don't have USAGE privileges on the schema which the table belongs to? I have found out that I can retrieve all the necessary permissions for tables from the information_schema.table_privileges table with no problems but I'm puzzled about database & schema privileges.

Kind regards,
gamehack


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