Posted by Erland Sommarskog on 02/17/06 01:01

(osafren@012.net.il) writes:
>>From microsoft.com:
> "Double data type
> A fundamental data type that holds double-precision floating-point
> numbers. It's stored as a 64-bit number ranging in value from
> approximately -1.797E308 to -4.940E-324 (negative), from 4.94E-324 to
> 1.797E308 (positive), and 0."
>
> And form SQL Server when trying to commit 4.94E-320:
> "The supplied value is not a valid instance of data type float"

I don't know really where you found that documentation. Books Online
for SQL Server says:

float [ ( n ) ]

Is a floating point number data with the following valid values:
-1.79E + 308 through -2.23E - 308, 0 and 2.23E -308 through 1.79E + 308.
n is the number of bits used to store the mantissa of the float number
in scientific notation and thus dictates the precision and storage
size. n must be a value from 1 through 53. The default value of n is
53.


--
Erland Sommarskog, SQL Server MVP, esquel@sommarskog.se

Books Online for SQL Server 2005 at
http://www.microsoft.com/technet/prodtechnol/sql/2005/downloads/books.mspx
Books Online for SQL Server 2000 at
http://www.microsoft.com/sql/prodinfo/previousversions/books.mspx

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