Today I Learned

A Hashrocket project

MySQL Average

MySQL; it’s like a calculator inside your computer. Today I learned how to compute the average of something using this popular RDBMS.

Let’s compute the average length of name in table dog.

mysql> select avg(char_length(name)) from dog;

Result:

+------------------------+
| avg(char_length(name)) |
+------------------------+
|                 9.2965 |
+------------------------+
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