New answers tagged sorting
I can reproduce the plan that you describe on SQL Server 2012 (on prem) by running the DDL in your question and then fiddling the stats so SQL Server thinks that the table is much larger than reality. UPDATE STATISTICS [dbo].[JobItems] WITH ROWCOUNT = 10000000, pagecount = 10000000 And then running the query with OPTION (MAXDOP 1, CONCAT UNION, ORDER ...
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