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Re: Denormalization to allow use UNQIUE index?
Posted by: Victor Porton
Date: November 12, 2016 02:14PM

Peter Brawley Wrote:
-------------------------------------------------------
> It's not a denormalisation issue.
>
> You say the relation of post to comment is 1:many.
> Then your comment FK is misformed, referencing the
> comment table instead of the post table.
>
> You need ...
>
>
> CREATE TABLE post ( 
>   id INT UNSIGNED NOT NULL AUTO_INCREMENT, 
>   body TEXT NOT NULL, 
>   issue_id INT UNSIGNED NOT NULL, 
>   PRIMARY KEY (id) 
> ); 
> 
> CREATE TABLE comment ( 
>   id int unsigned NOT NULL AUTO_INCREMENT, 
>   post_id int unsigned NOT NULL, 
>   body text COLLATE utf8_bin NOT NULL, 
>   PRIMARY KEY (id), 
>   FOREIGN KEY (post_id) REFERENCES post(id) 
> );

Certainly it was a typo. My question remains unaswered.

--
http://freesoft.portonvictor.org

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Re: Denormalization to allow use UNQIUE index?
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