Convert in SQL Server -

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this in sql server 2012 environment have following problem , have table field type datetime.

this field yyyy-mm-dd hh:mm:ss:msmsms - "2013-12-12 00:00:00.000"

and need extract yyyy 1 field. mm 1 , dd last one.

i tried 

select        distinct convert(char (10), data, 120) dia,   convert(char (7), data, 120) mes,  convert(char (4), data, 120) ano            vendas

but output 

day 12-12-2013 month 12-2013 year 2013

the year correct can't find way cut right part day , month.

somebody me please ? 

select year(data), month(data), day(data) dbo.vendas;

or

select datepart(year, data), datepart(month, data), datepart(day, data)   dbo.vendas;

sqlfiddle


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