How to get duplicate rows inclusive of first row number in SQL Server? -


i have written below query retrieve duplicate customers using row_number() in sql server.

 cust_pkid ---------------+ customerid ----------------- + mobileno  1                        | a00001                       | 9000477444     2                        | a00002                       | 9000477444  3                        | a00003                       | 9000477444

query:-

select tmp.custid (    select customerid custid,        row_number() over(partition mobileno order (select null)) rowno    dbo.customers ) tmp tmp.rowno > 1

output:-

cust_pkid ---------------+ customerid ----------------- + mobileno     2                        | a00002                       | 9000477444 3                        | a00003                       | 9000477444

how can retrieve records including of first rowno record in single select statement?

you looking count() over() window function not row_number

select tmp.custid (    select customerid custid,        count(1) over(partition mobileno) rowno    dbo.customers ) tmp tmp.rowno > 1

this bring duplicate mobileno records


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