RE: How many bytes does the datatype NUMBER use?
Date: 2000/03/20
Message-ID: <lUtB4.33348$ys3.220470_at_telenews.teleline.es>#1/1
Here you are: It´s from Oracle8 Server Concepts:
Internal Numeric Format
Taking this into account, the column data size for a particular numeric data value NUMBER (p), where p is the precision of a given value (scale has no effect), can be calculated using the following formula:
1 byte (exponent) + FLOOR(p/2)+1 bytes (mantissa) + 1 byte (only for a negative number where the number of significant digits is less than 38) _______________________
number of bytes of data
Zero and positive and negative infinity (only generated on import from Version 5 Oracle databases) are stored using unique representations: zero and negative infinity each require one byte; positive infinity requires two bytes.
Louis Frolio <frolio_at_videoshare.com> escribió en el mensaje de noticias
87ps2c$enr$1_at_bob.news.rcn.net...
> Greetings All, I was hoping that someone might be able to tell
> me how many bytes the datatype "number" uses. If it is dynamic
> what is the method of determinig how many bytes will be used?
>
>
> Thank You, Louis
> frolio_at_videoshare.com
>
>
Received on Mon Mar 20 2000 - 00:00:00 CET