How to work around SQL Server's “The maximum number of tables in a query (260) was exceeded.”

Question

i have a query that contains a series of 21 UNIONs, e.g.:

CREATE VIEW dbo.USGovCurrencyOnHandBreakdown AS

   SELECT ... FROM a
   UNION ALL
   SELE         


        

Answer 1

You could store the subqueries into temp tables, e.g. the USGovCurrencyOnHandBreakdown_Additions and USGovCurrencyOnHandBreakdown_Subtractions that you mentioned, and than selecting from those temp tables instead of views.

Of course, the transactions could be an issue because of the dirty reads, I don't know if that's a concern in this case...