sql server - SQL retrieving data from quarters -

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i'm new in sql. practicing , came on this. how retrieve total number of sales during first, second, third , fourth quarter separately. know i'm not providing work from, understand logic , functions can used it.

you use sum() give total aggregate of dollar amount of sales, , count(*) total count of sales. far breaking down further (such quarter), need provide more information far how data structured.


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