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From: tyrrill_ed@emc.com
To: dev@archonet.com
Cc: pgsql-sql@postgresql.org
Subject: Re: Bit string help, please
Date: Thu, 6 Mar 2008 13:24:44 -0500
Message-ID: <4FB0C599D8D0B14FA37B46EAD92F2153036EF2A2@CORPUSMX60C.corp.emc.com> (raw)
In-Reply-To: <47CFA7B7.9080902@archonet.com>
References: <4FB0C599D8D0B14FA37B46EAD92F2153036EEC5E@CORPUSMX60C.corp.emc.com>
	<47CFA7B7.9080902@archonet.com>

I tried this real quick at the psql command prompt, and unfortunately it
doesn't work:

mydb=# select ('1' || repeat('0',7))::bit varying;
ERROR:  cannot cast type text to bit varying

I appreciate the try though.  Any other ideas?  I am using PostgreSQL
8.2.3.1.  I don't know if that matters too much.

Thanks,
Ed
 

-----Original Message-----
From: Richard Huxton [mailto:dev@archonet.com] 
Sent: Thursday, March 06, 2008 12:14 AM
To: Tyrrill, Ed
Cc: pgsql-sql@postgresql.org
Subject: Re: [SQL] Bit string help, please

tyrrill_ed@emc.com wrote:
> 
> insert into table1 values( DEFAULT, B'1'::bit( n ) );
> 
> Where n is one of the parameters to the PL/pgSQL function, but that
> doesn't work.  PostgreSQL doesn't like having a variable for the bit
> string length.  Does anyone have any ideas how I could achieve this?

Try casting from a string:
   SELECT ('1' || repeat('0', n-1))::bit varying;


-- 
   Richard Huxton
   Archonet Ltd




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