Retrieve all permissions for a user in all user databases

DECLARE @dbname VARCHAR(50)  
DECLARE @statement NVARCHAR(MAX)

DECLARE db_cursor CURSOR
LOCAL FAST_FORWARD
FOR 
SELECT name
FROM master.sys.databases
WHERE name NOT IN ('master','msdb','model','tempdb')
AND state_desc='online'
OPEN db_cursor 
FETCH NEXT FROM db_cursor INTO @dbname 
WHILE @@FETCH_STATUS = 0 
BEGIN 

SELECT @statement = 'use '+@dbname +';'+ 'SELECT

 ServerName=@@servername, dbname=db_name(db_id()),p.name as UserName, p.type_desc as TypeOfLogin, pp.name as PermissionLevel, pp.type_desc as TypeOfRole

FROM sys.database_role_members roles

JOIN sys.database_principals p ON roles.member_principal_id = p.principal_id

JOIN sys.database_principals pp ON roles.role_principal_id = pp.principal_id
where p.name=''LoginName''' -- Change the user name

EXEC sp_executesql @statement

FETCH NEXT FROM db_cursor INTO @dbname 
END 
CLOSE db_cursor 
DEALLOCATE db_cursor