PARTITION BY doesn't work in H2 db

问题

I'm using PARTITION BY clause to do sorting on the result. Details for using PARTITION BY is mentioned in this question Sql Order by on multiple column. It works fine when i run in Oracle. I'm using H2 db for my unit test cases. When i run the same query on H2 db, it doesn't work. Is it known issue in H2? Is there any alternate solution which can work in Oracle and H2 both.

回答1:

I don't think H2 supports window functions (aka analytic functions). However, you can do the query in the link using standard SQL:

SELECT t.*
FROM yourtable t join
     (select vendorname, max(incidentdate) as maxdate
      from yourtable yt
      group by vendorname
     ) vn
     on vn.vendorname = yt.vendorname
ORDER BY vn.maxDate DESC, t.VendorName ASC, t.IncidentDate DESC;

Although this should run in both environments, the over form probably performs better in SQL.

来源：https://stackoverflow.com/questions/16928714/partition-by-doesnt-work-in-h2-db