Re: New CORRESPONDING clause design

From: Surafel Temesgen <surafel3000(at)gmail(dot)com>
To: Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>
Cc: PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: New CORRESPONDING clause design
Date: 2017-03-14 15:33:08
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Some errors are related to just CORRESPONDING without any columns. So using
> expr doesn't help here. So parse node CORRESPONDING can solve both issues.
In current implementation pointing to a node means pointing to a node’s
first element so I don’t think we can be able to point to CORRESPONDING
without any columns

I find out that there is already a node prepare for the case called A_Const.
The attached patch use that node


Attachment Content-Type Size
corresponding_clause_v5.patch application/octet-stream 59.0 KB

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