MS SQL Server - Wer verwendet welche Foreign Keys?
Dank der Hilfe von folgendem Blog, habe ich heraus gefunden, wie man eine Übersicht darüber ermitteln kann, welche Tabellen, welche Foreign Keys nutzen: http://bytestopshere.wordpress.com/2008/11/01/sql-server-script-to-find-foreign-key-dependencies/
Geben Sie einfach folgenden Befehl in das Abfragefenster im SQL Server Managemenet Studio ein und klicken Sie auf "Ausführen":
select cast(f.name as varchar(255)) as foreign_key_name
, r.keycnt
, cast(c.name as varchar(255)) as foreign_table
, cast(fc.name as varchar(255)) as foreign_column_1
, cast(fc2.name as varchar(255)) as foreign_column_2
, cast(p.name as varchar(255)) as primary_table
, cast(rc.name as varchar(255)) as primary_column_1
, cast(rc2.name as varchar(255)) as primary_column_2
from sysobjects f
inner join sysobjects c on f.parent_obj = c.id
inner join sysreferences r on f.id = r.constid
inner join sysobjects p on r.rkeyid = p.id
inner join syscolumns rc on r.rkeyid = rc.id and r.rkey1 = rc.colid
inner join syscolumns fc on r.fkeyid = fc.id and r.fkey1 = fc.colid
left join syscolumns rc2 on r.rkeyid = rc2.id and r.rkey2 = rc.colid
left join syscolumns fc2 on r.fkeyid = fc2.id and r.fkey2 = fc.colid
where f.type = 'F'
ORDER BY cast(p.name as varchar(255))
