To search for text like '[foo]' and '[bar]' where the brackets are seen as literals we can use the LIKE operator in the WHERE predicate:
...
WHERE [ColumName] LIKE '[[]%]'
This is covered in detail under "Using Wildcard Characters as Literals" in the SQL Books Online documentation here:
http://msdn.microsoft.com/library/default.asp
?url=/library/en-us/tsqlref/ts_la-lz_115x.asp