Re: [SQL] rewriting values with before trigger

How about putting the data validity and conversion routine in ONE trigger?

OR, deliberately name your triggers with alphanumerical prefixes that forces them to fire in a certain order, and
makingthe trigger that does the conversion fire first? 

I have no idea how the transport of a value of '' happens in the parser if it's expecing a NULL/INT value, if it would
evenmake it to the trigger stage <shrug>. 

Robert Treat wrote:
> On Thu, 2003-04-24 at 12:39, Josh Berkus wrote:
>
>>Robert,
>>
>>
>>>Is there anyway to do be able to change the '' into NULL before data
>>>validity is checked with a trigger?
>>
>>What about using a RULE instead?
>>
>
>
> RULE's follow this same behavior, erroring out if the data is not a
> valid timestamp. (At least I've not been able to write a rule that
> doesn't follow this) In fact you actually can't create the rule if you
> have a where clause that isn't a proper matching datatype.
>
> I seem to recall a solution for folks who need '' to represent 0 in int
> fields was to use triggers or rules, but I guess that really isn't
> possible :-(
>
> Robert Treat
>
>
>
>
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