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SQL: Calculate 7 Day Moving Average
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I just realized my mistake. To get a true 7 day moving average, use RANGE instead of ROWS for your range specification.
select date, sales, avg(sales) over(order by date range between '6 days' preceding and current row)
from sales_infoorder by date;
select date, sales, avg(sales) over(order by date range between '6 days' preceding and current row)
from sales_infoorder by date;
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