I also have a question here:
isn't dpow enough for calculation?
Why added numeric_power?
"Tom Lane" <tgl@sss.pgh.pa.us> д����Ϣ����:12538.1205298992@sss.pgh.pa.us...
> "Richard Wang" <ruc_wang@hotmail.com> writes:
>> I expected 0 ^ 123.3 to be 0, but it reported error as follows
>> postgres=# select 0 ^ 123.3;
>> ERROR: cannot take logarithm of zero
>
> Hmm, seems like the numeric and float8 power operators don't agree
> about 0^0 either...
>
> regards, tom lane
>
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