Re: query manipulation

From: Dave Cramer <davec(at)fastcrypt(dot)com>
To: Randall Smith <randall(at)tnr(dot)cc>
Cc: pgsql-jdbc(at)postgresql(dot)org
Subject: Re: query manipulation
Date: 2007-03-21 18:24:15
Message-ID: A2FDFFC1-EA76-44A0-9835-1A5DA553FECC@fastcrypt.com
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Randall,

It would work, but it appears the utility here is to make the
differences between JDBC versions transparent.

Dave
On 21-Mar-07, at 1:29 PM, Randall Smith wrote:

> Would this be a good tool to use here or would it create
> unnecessary work?
>
> http://jakarta.apache.org/commons/dbutils/apidocs/org/apache/
> commons/dbutils/ProxyFactory.html
>
> public java.sql.PreparedStatement createPreparedStatement
> (java.lang.reflect.InvocationHandler handler)
>
> Randall
>
>
> Randall Smith wrote:
>> I'm trying to find a way to manipulate some poorly written queries
>> in which I don't have access to the application source. I can't
>> do it at the Postgresql server, so I'm thinking of attacking it at
>> the jdbc driver.
>> I was thinking of a wrapper that would look at and alter the SQL
>> before it went to the server. Anyone know of something like this?
>> Specifically, I'm trying to drop "FOR UPDATE column name" off of
>> some queries. They were written for Oracle, but Postgresql uses
>> "FOR UPDATE table name". I'm not a Java programmer, but I won't
>> let that stop me if it is required.
>> Randall
>> ---------------------------(end of
>> broadcast)---------------------------
>> TIP 7: You can help support the PostgreSQL project by donating at
>> http://www.postgresql.org/about/donate
>
>
> ---------------------------(end of
> broadcast)---------------------------
> TIP 9: In versions below 8.0, the planner will ignore your desire to
> choose an index scan if your joining column's datatypes do not
> match
>

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