Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
How do I create a random four-digit number in MySQL?
Let us first create a table −
mysql> create table DemoTable717 ( UserId int NOT NULL AUTO_INCREMENT PRIMARY KEY, UserPassword int ); Query OK, 0 rows affected (0.81 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable717(UserPassword) values(1454343); Query OK, 1 row affected (0.21 sec) mysql> insert into DemoTable717(UserPassword) values(674654); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable717(UserPassword) values(989883); Query OK, 1 row affected (0.15 sec) mysql> insert into DemoTable717(UserPassword) values(909983); Query OK, 1 row affected (0.15 sec)
Display all records from the table using select statement −
mysql> select *from DemoTable717;
This will produce the following output -
+--------+--------------+ | UserId | UserPassword | +--------+--------------+ | 1 | 1454343 | | 2 | 674654 | | 3 | 989883 | | 4 | 909983 | +--------+--------------+ 4 rows in set (0.00 sec)
Following is the query to create a random 4 digit and set for the “UserPassword” column −
mysql> update DemoTable717 SET UserPassword=(select floor(0+ RAND() * 10000)); Query OK, 4 rows affected (0.22 sec) Rows matched: 4 Changed: 4 Warnings: 0
Let us check the table records once again −
mysql> select *from DemoTable717;
This will produce the following output -
+--------+--------------+ | UserId | UserPassword | +--------+--------------+ | 1 | 4319 | | 2 | 3902 | | 3 | 6553 | | 4 | 1060 | +--------+--------------+ 4 rows in set (0.00 sec)
Updated on: 22-Aug-2019
638 Views
Advertisements