Post as a guest Name. Email Required, but never shown. The Overflow Blog. Podcast Making Agile work for data science. Stack Gives Back Featured on Meta. New post summary designs on greatest hits now, everywhere else eventually. Visit chat. Related Hot Network Questions. Question feed. Stack Overflow works best with JavaScript enabled. In contrast to a before trigger, an after trigger does not allow to change :new. If one tries to assign a value to :new.
As the log table shows, it is possible to use :new and :old although it's not possible to assign something to :new. A table level trigger is a trigger that doesn't fire for each row to be changed. The trigger allows to set the date and time when the row was actually inserted.
For example, if you insert a row to both Oracle and SQL Server, the triggers will set the value of created column:. But now you have to use both inserted and deleted tables in a SQL Server trigger to get old and new values:.
For example, let's try to update the cities table, change created date and set name to NULL:. In SQL Server you have several options how to convert this trigger.
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