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BUG #5001: can not prepare for where $1 is null

From: "" <94487509(at)qq(dot)com>
To: pgsql-bugs(at)postgresql(dot)org
Subject: BUG #5001: can not prepare for where $1 is null
Date: 2009-08-21 08:41:18
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-bugs
The following bug has been logged online:

Bug reference:      5001
Logged by:          
Email address:      94487509(at)qq(dot)com
PostgreSQL version: 8.3.3
Operating system:   linux
Description:        can not prepare for where $1 is null

why can not prepare like this? thanks!
 prepare ssss as select * from test where $1 is null;
 ERROR:  could not determine data type of parameter $1


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Subject: BUG #5003: setup error
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Subject: Re: BUG #4999: select 'a' < 'A' is true, but should be false . . .

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