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In this post, I am sharing in one script to find which group roles are granted to user in PostgreSQL.
As a DBA, when you are managing a number of database users and connections at that time it is very important to find a list of assigned roles for different user.
Using this single script you can easily find a list of users and its assigned roles.
pg_get_userbyid(roleid) AS GroupRoleName
,pg_get_userbyid(member) AS GrantedUserName
,pg_get_userbyid(grantor) AS GrantorUserName
,admin_option AS HasAdminOption
WHERE pg_get_userbyid(roleid) = 'User_Name';