On 6/7/01 5:33 PM, "Gary Huntress" <[EMAIL PROTECTED]> wrote:
> I'll bet it's a roundoff problem....try select * from sequence_protein where
> mol_wt> 53211.62 and mol_wt < 53211.63
>
>
> Regards,
> Gary "SuperID" Huntress
> =======================================================
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>
> ----- Original Message -----
> From: "Hannes Niedner" <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Thursday, June 07, 2001 5:48 PM
> Subject: Select query
>
>
>>
>> What do I do wrong? The query result is not supposed to be an empty set
>> (please cc your response to [EMAIL PROTECTED])
>>
>> mysql> select sequence_id, mol_wt from sequence_protein limit 1;
>> +-------------+----------+
>> | sequence_id | mol_wt |
>> +-------------+----------+
>> | 100368 | 53211.62 |
>> +-------------+----------+
>> 1 row in set (0.02 sec)
>> !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
>>
>> mysql> select distinct sequence_id from sequence_protein
>> -> where mol_wt=53211.62;
>> Empty set (0.12 sec)
>> ????????????????????????????????????????????????????????????????
>>
>> mysql> describe sequence_protein;
>> +-------------+------------------+------+-----+---------+-------+
>> | Field | Type | Null | Key | Default | Extra |
>> +-------------+------------------+------+-----+---------+-------+
>> | sequence_id | int(10) unsigned | | PRI | 0 | |
>> | length | int(10) unsigned | | | 0 | |
>> | mol_wt | float(10,2) | YES | | 0.00 | |
>> +-------------+------------------+------+-----+---------+-------+
>>
>> Thank you
>>
>> Hannes
>>
>>
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>
You guys are great and solved my case
mysql> select sequence_id from sequence_protein
-> where truncate(mol_wt,2) =53211.62;
+-------------+
| sequence_id |
+-------------+
| 100368 |
+-------------+
1 row in set (0.18 sec)
I do apologize, I was following the wrong thread in the manual.
Thanx Hannes
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