Re: char(1) vs Number(1)

From: joel garry <>
Date: Mon, 30 Nov 2009 10:58:21 -0800 (PST)
Message-ID: <>

On Nov 30, 9:59 am, CrazyKarma <> wrote:
> Quick check on whether char(1) is more efficient than number (1).
> Basically storing a bit value of either 0 or 1. since this is a
> numeric maybe its better to store this as number(1).
> Did a simple test for 1million rows, the IO cost is the same but the
> number of bytes is double with number(1).
> This makes me think that char(1) is more efficient in storage.
> any thoughts?

Yes, not having a boolean datatype is a bit of a frustration in Oracle. See

Oh wait, everything I know is wrong:


-- is bogus.
Received on Mon Nov 30 2009 - 12:58:21 CST

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