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How to generate 6-digit random number in MySQL?
You can use LPAD() along with rand() and floor() to generate 6-digit random number. Let us first create a table −
mysql> create table DemoTable ( Value int ); Query OK, 0 rows affected (0.64 sec)
Insert records in the table using insert command −
mysql> insert into DemoTable values(1); Query OK, 1 row affected (0.16 sec) mysql> insert into DemoTable values(2); Query OK, 1 row affected (0.17 sec) mysql> insert into DemoTable values(3); Query OK, 1 row affected (0.24 sec) mysql> insert into DemoTable values(4); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable values(5); Query OK, 1 row affected (0.15 sec) mysql> insert into DemoTable values(6); Query OK, 1 row affected (0.19 sec)
Display all records from the table using select statement −
mysql> select * from DemoTable;
This will produce the following output −
+-------+ | Value | +-------+ | 1 | | 2 | | 3 | | 4 | | 5 | | 6 | +-------+ 6 rows in set (0.00 sec)
Following is the query to generate 6-digit random number in MySQL −
mysql> update DemoTable set Value=LPAD(FLOOR(RAND() * 999999.99), 6, '0'); Query OK, 6 rows affected (0.15 sec) Rows matched: 6 Changed: 6 Warnings: 0
Let us display the updated records from the table −
mysql> select * from DemoTable;
This will produce the following output −
+--------+ | Value | +--------+ | 499540 | | 550607 | | 254419 | | 620272 | | 338104 | | 829705 | +--------+ 6 rows in set (0.00 sec)
Updated on: 30-Jul-2019
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