Hi guys. Here's my problem. I want to check the new values (when inserting&updating a table) against the ones in the existing rows. Something like checking for duplicate values, but using a unique constraint doesn't suit my needs. I think of a before insert&update trigger, wherein checking my condition and raise a error if not valid. The problem is, in case of an update statement, I get the mutating "ORA-04091 table <my table> is mutating....". I read a lot of doc but I didn't find any helping ideas. Can you give me some, or maybe a new approach to this kind of problem? Thanks in advance! iulian
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