From: Kris <krisallsop@btinternet.com>
To: Dmitri Colebatch <dim@bigpond.net.au>
To: pgsql-sql@postgresql.org
Subject: Re: Obtaining primary key information from pg system tables
Date: Sat, 22 Jun 2002 12:08:50 +0100
Message-ID: <00cd01c219dd$30c26bf0$30267bd5@graveland> (raw)
References: <009201c219d7$c6605420$30267bd5@graveland>
<006801c219d9$ba0b3710$fe00a8c0@hobbes>
Thanx for replying Dmitri,
I am aware of the JDBC API exposing information, it might be an idea to use both the system tables and JDBC information in the this case. The reason why i want to use the system tables is for example , (in MS SQL Server and Oracle) the NVARCHAR and NVARCHAR2 datatypes are not part of the JDBC spec and when using JDBC there is no way of telling these part from a VARCHAR or VARCHAR2. I needed to do this with when writing a java based insert script generator so i could cast the strings with the N. I was thinking the system tables were more reliable but i dont need to use just those i guess.
Kris
----- Original Message -----
From: Dmitri Colebatch
To: Kris ; pgsql-sql@postgresql.org
Sent: Saturday, June 22, 2002 11:44 AM
Subject: Re: [SQL] Obtaining primary key information from pg system tables
Kris,
I'm assuming you dont want to do this, but just in case you're not aware of the option - the JDBC API exposes this information.
hth
dim
----- Original Message -----
From: Kris
To: pgsql-sql@postgresql.org
Sent: Saturday, June 22, 2002 8:30 PM
Subject: [SQL] Obtaining primary key information from pg system tables
Hi,
I am trying to generate some xml metadata from the pg system tables for my java code generation utility. I have can get most information, but i would like to be able to tell which column is a primary key or which one is a foreign key (i dont need to know which table the foreign key references at this point).
Which tables do i need reference, could anyone provide an example query?
Kris
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To: pgsql-sql@postgresql.org
Cc: krisallsop@btinternet.com, dim@bigpond.net.au
Subject: Re: Obtaining primary key information from pg system tables
In-Reply-To: <00cd01c219dd$30c26bf0$30267bd5@graveland>
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