show records where the name has 6 characters : Introduction « Regular Expression « SQL / MySQL

1. SQL / MySQL
2. Regular Expression
3. Introduction

show records where the name has 6 characters

      
mysql>
mysql> CREATE TABLE IF NOT EXISTS product
    -> (
    ->   id     INT             AUTO_INCREMENT PRIMARY KEY,
    ->   name   VARCHAR(25)     NOT NULL,
    ->   price DECIMAL(6,2)     NOT NULL
    -> );
Query OK, 0 rows affected (0.00 sec)

mysql>
mysql>
mysql> INSERT INTO product (name, price)   VALUES ("Monaco", 6.99);
Query OK, 1 row affected (0.00 sec)

mysql> INSERT INTO product (name, price)   VALUES ("Cavendish", 4.99);
Query OK, 1 row affected (0.00 sec)

mysql> INSERT INTO product (name, price)   VALUES ("Mosaic", 6.99);
Query OK, 1 row affected (0.00 sec)

mysql> INSERT INTO product (name, price)   VALUES ("Blue Reef", 8.99);
Query OK, 1 row affected (0.00 sec)

mysql> INSERT INTO product (name, price)   VALUES ("Silver Swirl", 14.99);
Query OK, 1 row affected (0.00 sec)

mysql>
mysql> # show all data in the "product" table
mysql> SELECT * FROM product;
+----+--------------+-------+
| id | name         | price |
+----+--------------+-------+
|  1 | Monaco       |  6.99 |
|  2 | Cavendish    |  4.99 |
|  3 | Mosaic       |  6.99 |
|  4 | Blue Reef    |  8.99 |
|  5 | Silver Swirl | 14.99 |
+----+--------------+-------+
5 rows in set (0.00 sec)

mysql>
mysql>
mysql> # show records where the name has 6 characters
mysql> SELECT * FROM product WHERE name REGEXP "^......$";
+----+--------+-------+
| id | name   | price |
+----+--------+-------+
|  1 | Monaco |  6.99 |
|  3 | Mosaic |  6.99 |
+----+--------+-------+
2 rows in set (0.00 sec)

mysql>
mysql> drop table product;
Query OK, 0 rows affected (0.00 sec)

mysql>

   
    
    
    
    
    
  

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