sql server - why I get an error with the trigger when I try to delete on cascade? -


i have 2 tables in database , delete on cascade trigger. use use cascade deleting in relationship, in case have more tables , sql server not let me set cascde deleting in relationship because create cycle.

so want create trigger delete registers of table can't set cascade deleting in relationship.

i use trigger:

create trigger trg_mytrigger    on  componentes    after delete  begin     -- set nocount on added prevent result sets     -- interfering select statements.     set nocount on;      -- insert statements trigger here     delete mytable2 idparentfromtable1 in(select deleted.idtable1 deleted) end go

however , error of foreign key.

really don't know why error.

thanks.

the trigger fires after delete, foreign key error happens before trigger runs.

you need use 1 of

  • a stored proceure delete mytable2 componentes
  • an instead of (before trigger)
  • two separate deletes in transaction

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