


Detailed explanation of how to use MySQL to generate random numbers and connect strings
This article mainly introduces the method of MySQL generating random numbers and connecting strings, briefly analyzes the related functions, and gives the corresponding SQL statement implementation method in the form of examples. Friends in need can refer to it
The example in this article describes the method of MySQL generating random numbers and concatenating strings. Share it with everyone for your reference, the details are as follows:
Method used:
concat('a','b','c');
Connecting characters String
rand();
Generate a random number
floor();
Take an integer
SQL statement example:
The code is as follows:
UPDATE user set reg_ip= concat(floor(RAND() * 250),'.',floor(RAND() * 250),'.',floor(RAND() * 250),'.',floor(RAND() * 250)) where username='xxx'
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