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2,454 posts. Thanks Meter: 162.
In fact, that two SELECT statements with UNION form a shape called DERIVED TABLE – veljasije Aug 14 '13 at 11:09.
For example, to calculate the 2nd highest salary, we can create row numbers using ROW_NUMBER() function over salary and then get the second row, which would be your 2nd maximum salary. Though these ranking functions handle duplicates differently, so depending upon whether your table has the...
@Lennart: Thanks a lot for your concern but if I were you in this case, I would use select coalesce(t1.x, t2.x) from ( values (1, 1/NULLIF(1, 0)) ) t1 (a,x)
mysql> select *from Last10RecordsDemo; The following is the output.
If nothing happens, download the GitHub extension for Visual Studio and try again.
This video shows you how to get/retrieve rows using both raw (postgres) sql and and shortcut methods that Knex has.
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