Maybe you should try
SELECT count(*) FROM bench WHERE year = 95 and
-> value BETWEEN (0.7*63000) and (1.3*63000) ;
----- Original Message -----
From: <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Saturday, February 03, 2001 3:53 AM
Subject: BETWEEN problem?
> Can anyone explain the following results to me?
>
> I am trying to find all values +/- 30% from a number...
> value is declared as: | value | int(10) unsigned
> Note that 1.3*63000 is 81900...
>
> The first two are apparently correct:
>
> mysql> SELECT count(*) FROM bench WHERE year = 95 and
> -> value >= .7*63000 and value <= 1.3*63000 ;
> +----------+
> | count(*) |
> +----------+
> | 115 |
> +----------+
> 1 row in set (0.10 sec)
>
> mysql> SELECT count(*) FROM bench WHERE year = 95 and
> -> value >= .7*63000 and value <= 81900 ;
> +----------+
> | count(*) |
> +----------+
> | 115 |
> +----------+
> 1 row in set (0.08 sec)
>
> These next two should give the same result, but...
>
> mysql> SELECT count(*) FROM bench WHERE year = 95 and
> -> value BETWEEN .7*63000 and 81900 ;
> +----------+
> | count(*) |
> +----------+
> | 47 |
> +----------+
> 1 row in set (0.08 sec)
>
> mysql> SELECT count(*) FROM bench WHERE year = 95 and
> -> value BETWEEN .7*63000 and 1.3*63000 ;
> +----------+
> | count(*) |
> +----------+
> | 0 |
> +----------+
> 1 row in set (0.08 sec)
>
>
> Thanks
>
>
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