Trigger updating same table oracle nico mirallegro dating


15-Aug-2017 22:16

For each row inserted into SALES, the trigger makes a call to utl_to automatically send an email containing the discount code to the customer. And yes, I still use them to populate primary key columns that depend on sequences. And, despite highlighting the danger of using them for auditing, we do still maintain some legacy code that does that. Yes, I confess that the main database I work with still has a number of triggers in it, and I know that that makes me sound hypocritical. David Njoku is a software developer at Northgate Public Services.If I was starting today, I would definitely use fine grained auditing instead, but we can’t rewrite the past, at least not cheaply. But it is 15 years old, and sometimes it’s too much trouble to erase the fingerprints of past developers. His tools of choice are Oracle technologies and he has over a decade of experience building applications with Oracle Forms, Oracle Application Development Framework and Oracle Application Express.What I want to do is either insert only the new rows, or insert the new rows and update the changed rows (depending on the scenario). If I want to insert only the rows that will not violate the unique index, I can: Which method to use largely depends on requirements.If the software must support multiple database backends or versions, perhaps the generic, standard queries are the best bet.For Example: The price of a product changes constantly.It is important to maintain the history of the prices of the products.If no WHEN clause is supplied, the SQL statements are executed every time the trigger fires.

I have to start with one spreadsheet, then insert and/or update the differences from the others.We can create a trigger to update the 'product_price_history' table when the price of the product is updated in the 'product' table.



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