From: Gnanakumar <gnanam@zoniac.com>
To: pgsql-performance@postgresql.org
Subject: Inner Join - Explicit vs Implicit Join Performance
Date: Wed, 19 Oct 2011 16:09:44 +0530
Message-ID: <002301cc8e4b$6d147390$473d5ab0$@com> (raw)
Hi,
In PostgreSQL, is there any performance difference between queries written
using "explicit join notation" vs "implicit join notation" in complex
queries?
EXAMPLE: Simple "explicit join notation"
SELECT *
FROM employee INNER JOIN department
ON employee.DepartmentID = department.DepartmentID;
EXAMPLE: Simple "implicit join notation"
SELECT *
FROM employee, department
WHERE employee.DepartmentID = department.DepartmentID;
Regards,
Gnanam
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To: pgsql-performance@postgresql.org
Cc: gnanam@zoniac.com
Subject: Re: Inner Join - Explicit vs Implicit Join Performance
In-Reply-To: <002301cc8e4b$6d147390$473d5ab0$@com>
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