I have read the introduction of SQL layers in GeoServer 2.1 beta1, but I doubt whether it can
fulfills the below functions. There has two tables, A records the company information
(ID,NAME,ADRESS,TEL...), and B does space data information(SMID,...,COMPANYID). B's COMPANYID
reference A's ID. Now what I want is filtration of B through A field(eg.name). If cannot come
true, please give me some advice.