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Re: Simple SQL Question
Posted by: Peter Brawley
Date: August 27, 2017 05:00PM

Usually, p I'm having a hard time relating the examples to my specific situation

The first method given is dead simple, a whole lot easier than trying to port SQL Server syntax to MySQL ...

select a.patent_id, group_concat(b.assignee_id)
from patent a
join assignee b using(patent_id)
group by a.patent_id;

Pivot tables are used to tabulate statistics for categories (years, months, departments &c) that are known before the query runs.

You're not aggregating, just tabulating, so if Group_Concat() is not a tidy enough solution for you, that is, you want separate column results, you'll need to query the assignee table in advance for the maximum no. of assignees a patent_id has, and write the query to return that many assignee columns.

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August 26, 2017 11:56PM
August 27, 2017 08:50AM
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Re: Simple SQL Question
August 27, 2017 05:00PM
August 27, 2017 06:21PM
August 27, 2017 06:38PM
August 27, 2017 07:14PM
August 27, 2017 08:20PM
September 07, 2017 02:38AM


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