I have been  working nn an environment  that had multiple copies of a database on the same SQL server instance. In this case the SQL Server was acting as both a UAT and Training environment.
The application was supported by two databases. Each database had the need to reference objects in the other using a three part name. 
When it came to to releasing the database to production I wanted to check that all references across databases  were correct that is. That is objects in the databases didn’t access or reference the wrong databases.
I thought I’d make use of the sys.dm_db_uncontained_entities stored procedure to look for objects that span the database boudary.
I came up with the following query that did what I wanted.

SELECT DISTINCT SO.NAME
,so.object_id
,sm.DEFINITION
,UE.class_desc
FROM sys.dm_db_uncontained_entities AS UE
LEFT JOIN sys.objects AS SO ON UE.major_id = SO.object_id
LEFT JOIN sys.sql_modules AS sm ON so.object_id = sm.object_id
WHERE sm.DEFINITION IS NOT NULL
AND sm.DEFINITION LIKE '%SearchString%'

The above query can be modified to remove the uncontained entities reference to check for a string appearing in any object in the database.

SELECT DISTINCT so.NAME AS ObjectName
,so.type_desc
,sm.DEFINITION
FROM sys.sql_modules sm
INNER JOIN sys.objects so ON sm.object_id = so.object_id
WHERE sm.DEFINITION LIKE '%SearchString%'
ORDER BY so.type_desc
,so.NAME

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