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Editor to share with you what is the use of group by in the sql query. I hope you will get something after reading this article. Let's discuss it together.

The meaning of group by in sql query is to combine the aggregate function to group the result set according to one or more columns. Its function is to divide a data set into several small regions through certain rules, and then process the data for several small regions.

1. The group by in the sql statement is: the GROUP BY statement is used to combine the aggregate function to group the result set according to one or more columns.

Second, the advanced syntax of the sql statement group by:

1. Write a sql statement that creates the table. Of course, we can also use design drawings to create

2. Select * from student, we enter a query statement that shows all the data we just inserted

3. Select stuname,COUNT (*) from student group by stuname From the above results, it is not difficult to see that we are grouped according to the names of the students. another way of saying is to filter the repetition, group the names in the student table with group by, and use the aggregate function (count) to count the number of times each name appears.

There are a lot of skills in Sql sentences, generally in addition to the additions, deletions, changes and queries when we are beginners, there are many other things. Be sure to see how many bits your operating system is when you install it. If you are a 32-bit operating system, install the 32-bit Sqlserver version with no limit, 2005 or 2012.

After reading this article, I believe you have a certain understanding of "what is the use of group by in sql query". If you want to know more about it, you are welcome to follow the industry information channel. Thank you for reading!

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