25.10.2013 17:43, Vlad Khorsun wrote:
>      what if expression is very long and multyline ?

   In this case DB developer will give it a meaningful name.

> Also, it will force engine
> to make query system table to obtain constraint source...

   Throwing constraint violation exception is not frequent operation to be 
optimized.

-- 
   WBR, SD.

------------------------------------------------------------------------------
October Webinars: Code for Performance
Free Intel webinars can help you accelerate application performance.
Explore tips for MPI, OpenMP, advanced profiling, and more. Get the most from 
the latest Intel processors and coprocessors. See abstracts and register >
http://pubads.g.doubleclick.net/gampad/clk?id=60135991&iu=/4140/ostg.clktrk
Firebird-Devel mailing list, web interface at 
https://lists.sourceforge.net/lists/listinfo/firebird-devel

Reply via email to