Mysql inserts a random number into a field (inserts a random number to the MySQL database) and a random number to mysql
Common Code
UPDATE 'table name 'set' field name' = ceiling (rand () * 500000 + 500000) WHERE (condition );
Update 'table name'
This article implements the random numbers of MySQL, random data selection by MySQ, random data query by MySQ, and random data update by MySQ.
MySQ Random Data Query
I have discussed this issue in the group before. It is quite interesting. mysql
How to insert random string data in mysql, mysql string
Application scenarios:Sometimes it is necessary to test the records inserted into the database, so these scripts are very necessary.
Create a table:
CREATE TABLE `tables_a` ( `id` int(10) NOT
A brief introduction to 1.1 MongoDBIn today's database market, MySQL is undoubtedly a place to occupy. As an open-source relational database , MySQL is widely used in the background of major web sites, and assumes the important role of information
1. download MySql
1. download MySql
Open http://www.mysql.com/downloads/mysql/#downloads download in browser
My downloaded version is Red Hat 5 version of http://www.mysql.com/downloads/mirror.php? Id = 407552
Upload the file to the server, or
Php+mysql implementation of database random rearrangement instances, Phpmysql re-scheduling instances
In this paper, the method of random rearrangement of php+mysql database is realized, and all the data in the table can be randomly read out once
Use Rand () in MySQL to generate random numbers with random numbers and random name strings.Preface:The RAND function returns a random floating point value ranging from 0 to 1.0. If an integer parameter N is specified, it is used as a seed value.1.
Php + mysql implements random database rearranging instances and phpmysql rearranging instances
In this example, we have implemented the php + mysql database random shuffling method. We can randomly read all the data in the table and save it to
MySQL Bulk SQL Insert performance optimizationsPosted by Kiki TitaniumOn December 7, 2012
For some systems with large data volume, the problem of database is not only inefficient, but also the data storage time is long. Especially like a reporting
Create a role random name (mysql extraction random records) and mysql cursor usage, mysql cursor
I have encountered some problems in development recently. I have forgotten the solution here.
1. Currently, when creating a game role, it basically
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