Re: [PHP-DB] MySQL Conditional Trigger

-------- Original Message  --------
Subject: Re: [PHP-DB] MySQL Conditional Trigger
From: Chris <[email protected]>
To: OKi98 <[email protected]>
Date: 8.12.2008 23:09
>
>> anything compared to NULL is always false
>
> Actually it's null.
>
> mysql> select false = null;
> +--------------+
> | false = null |
> +--------------+
> |         NULL |
> +--------------+
> 1 row in set (0.01 sec)
>
> mysql> select 1 = null;
> +----------+
> | 1 = null |
> +----------+
> |     NULL |
> +----------+
> 1 row in set (0.00 sec)
>
> mysql> select 2 = null;
> +----------+
> | 2 = null |
> +----------+
> |     NULL |
> +----------+
> 1 row in set (0.00 sec)
>
>
> unknown compared to anything is unknown.
>
he was talking about plsql and condition evaluation (ends with true or 
false), your point is absolutely useless.