Where With Group By Sql Coupon

• GROUP BY With One Column. We’ll start with a simple example. We want to find out how many people visited the museum on each day. In other words, for each date, we’ll show the number of visits to the museum.
• GROUP BY With Two Columns. We now want to know the average price paid for a ticket in a given month. For this, we’ll need a more complicated query.
• GROUP BY and ORDER BY. This time, we want to find the average visit duration value for each month. We also want to make sure that the rows are sorted chronologically.
• GROUP BY and HAVING. Now, we have the following problem: we want to see the average ticket price for each day. However, there’s an extra condition: we don’t want to show days with 3 or fewer visits.
• GROUP BY, HAVING, and WHERE. Finally, we have the following problem to solve: we want to show the average visit duration for each day. Again, we only want to show days with more than three visits.

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