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What is the function of count function in mysql? I believe many inexperienced people don't know what to do about it. Therefore, this paper summarizes the causes and solutions of the problem. Through this article, I hope you can solve this problem.

SELECT COUNT (salary) FROM employees;SELECT COUNT (*) FROM employees;# is generally used to count the total number of rows in a table. As long as each row of the table is not null, one row of SELECT COUNT (1) FROM employees;# adds a column of 1, and the final count of 1 is the same as * asterisk effect # count (a constant of non-table fields) can also count the total number of rows after reading the above, do you know what the role of count function in mysql is? If you want to learn more skills or want to know more about it, you are welcome to follow the industry information channel, thank you for reading!

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