Will there be any performance issue when using such way?

William, Yu


----- Original Message ----
From: Anderson Farias <peixedragao@...>
To: firebird-support@yahoogroups.com
Sent: Wednesday, August 8, 2007 12:14:59 PM
Subject: Re: [firebird-support] Why I can not use IIF in where clause?













Hi, try this:



where IIF(CONTACT_ DATE is not null, CONTACT_DATE, INJURY_DATE)

between :startdate and :enddate and ...



Regards,

Anderson

----- Original Message -----

From: "william_yuwei" <william_yuwei@ yahoo.com>



Hi, All



I tried to put like this into where clause, and it failed:



where IIF(CONTACT_ DATE is not null, CONTACT_DATE between :startdate

and :enddate, INJURY_DATE between :startdate and :enddate) and ...














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