ALTER TABLE [Orders] ADD [LineaIdO] int NULL
DROP INDEX [IORDERS1] ON [Orders]
CREATE NONCLUSTERED INDEX [IORDERS1] ON [Orders] ([AgentEmail] ,[LineaIdO] )

ALTER TABLE [Orders] ADD CONSTRAINT [GX_000H005P] FOREIGN KEY ([LineaIdO]) REFERENCES [Linea] ([LineaId])
ALTER TABLE [Orders] ADD CONSTRAINT [IORDERS1] FOREIGN KEY ([AgentEmail], [LineaIdO]) REFERENCES [AgentsLineas] ([AgentEmail], [LineaId])