sql - counting number of entries in a month -

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I have an order table, and it has the order-date column, which is called order_date. I have to calculate the number of orders of each month in 2009. How do I do this? 

  Select the month (order-date) as the order, calculation (*) Order by order in order of order where year (order_data) = month by month (order_date) order (order_date)

for reference, see Transact-SQL and command.


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