How to create a daily sales report in MySQL?
Looking at the database, you will most likely have something similar to the sample orders table below with (some of) the columns & associated data looking like this: If you don’t have any table even remotely similar to this, but wish to follow this article, you can create your own: Obtaining the total sales for each day is very easy:
How to generate a range of dates in MySQL?
Instinctively, the answer seems to be generating a range of values (dates) on the fly via something like GENERATE_RANGE (start_value, end_value) and JOIN in with the dates in the table. I know quite many people new to MySQL think this way. Let me give you the bad new first: there is no such function in MySQL.
How to fill gaps in MySQL sales reports?
As you prepare to run to your boss and tell him that the problem is solved, you might notice the gap between some of the dates. What’s happening? Well, in this particular example, there is no data for the date 2009-08-16; on the other hand, you have to show that for some dates there were zero sales, so what do you do?
How often can I run a stored procedure in MySQL?
For this, you can use a simple stored procedure: The code is very simple. I’ve seen other (faster but less intuitive) approaches. Considering that you’ll run this sproc just once or maybe once every couple of years, saving a few miliseconds is not a big deal.
How to update data in a table in MySQL?
First, specify the name of the table that you want to update data after the UPDATE keyword. Second, specify which column you want to update and the new value in the SET clause.
How to update sales representative in mysql table?
To update the sales representative employee number column in the customers table, we place the query above in the SET clause of the UPDATE statement as follows: If you query data from the employees table, you will see that every customer has a sales representative. In other words, the following query returns no row.