Re: syntax of joins

From: Rob Sargent <robjsargent(at)gmail(dot)com>
To: pgsql-sql(at)postgresql(dot)org
Subject: Re: syntax of joins
Date: 2012-04-06 19:28:08
Message-ID: 4F7F43C8.4010204@gmail.com
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On 04/06/2012 01:23 PM, Pavel Stehule wrote:
> Hello
>
> 2012/4/6 Andreas<maps(dot)on(at)gmx(dot)net>:
>> hi,
>>
>> is there a disadvantage to write a join as
>>
>> select *
>> from a, b
>> where a.id = b.a_id;
>>
>
>> over
>>
>> select *
>> from a join b on a.id = b.a_id;
>>
>
> yes - newer notation has some advantages
>
> * clean specification join predicate and filter predicate
> * simple adaptability to outer join
> * increased protection against copy/paste bug that introduce Cartesian product
>
> Regards
>
> Pavel Stehule
>
>> --
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>
In other words, no disadvantage :)

-some cranky old guy who still misses "retrieve"

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