sql server - SQL Delete duplicate rows with lowest number -

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i can't find appropriate way delete duplicate keys in sql table lowest number. if there duplicate rows same number, need delete 1 of them.

for example

key     number  description  11111   5   desc1 11111   4   desc2 22222   2   desc1 22222   2   desc2 33333   3   desc1 33333   5   desc2

here need deleted second row number 4 smaller number 5, 1 of third or fourth row, , fifth row have smaller number 3 last row 5.

query remove duplicate in sql-server:

;with c (     select *, row_number() over(partition [key] order number desc) n     youtable ) delete c n > 1

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