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Re: Wrong SqlType for boolean columns

From: Thomas Kellerer <spam_eater(at)gmx(dot)net>
To: pgsql-jdbc(at)postgresql(dot)org
Subject: Re: Wrong SqlType for boolean columns
Date: 2010-07-28 09:15:42
Message-ID: i2osfu$vem$ (view raw or whole thread)
Lists: pgsql-jdbc
Oliver Jowett, 28.07.2010 10:59:
>> i found out that my postgres driver maps a boolean column to the
>> sqlType -7, wich is java.sql.Types.BIT and not
>> java.sql.Types.Boolean (Boolean is 16). This is a very strange
>> behavior.
> It is not a bug. BOOLEAN does not exist in earlier JDBC versions,
> and drivers can map boolean types to either BIT or BOOLEAN. We pick
> BIT so we can build drivers for earlier JDBC versions. (BIT is
> something of a confusing type, as the mappings defined by JDBC for
> the JDBC BIT type only really make sense for a single boolean value,
> not a SQL BIT(n) type)

Wouldn't it make sense to map this to BOOLEAN if the driver is built for JDBC4 and to BIT if is built for JDBC3?


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