Decomposing or Combining Strings : Mid « String « SQL / MySQL

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2. String
3. Mid

Decomposing or Combining Strings

      
mysql>
mysql> CREATE TABLE mytable
    -> (
    ->  name    VARCHAR(20)
    -> );
Query OK, 0 rows affected (0.00 sec)

mysql> INSERT INTO mytable (name)
    ->  VALUES
    ->          ('copper'),
    ->          ('gold'),
    ->          ('iron'),
    ->          ('lead'),
    ->          ('mercury'),
    ->          ('platinum'),
    ->          ('silver'),
    ->          ('tin')
    -> ;
Query OK, 8 rows affected (0.00 sec)
Records: 8  Duplicates: 0  Warnings: 0

mysql>
mysql> SELECT * FROM mytable;
+----------+
| name     |
+----------+
| copper   |
| gold     |
| iron     |
| lead     |
| mercury  |
| platinum |
| silver   |
| tin      |
+----------+
8 rows in set (0.00 sec)

mysql>
mysql>
mysql> SELECT name, LEFT(name,2), MID(name,3,1), RIGHT(name,3) FROM mytable;
+----------+--------------+---------------+---------------+
| name     | LEFT(name,2) | MID(name,3,1) | RIGHT(name,3) |
+----------+--------------+---------------+---------------+
| copper   | co           | p             | per           |
| gold     | go           | l             | old           |
| iron     | ir           | o             | ron           |
| lead     | le           | a             | ead           |
| mercury  | me           | r             | ury           |
| platinum | pl           | a             | num           |
| silver   | si           | l             | ver           |
| tin      | ti           | n             | tin           |
+----------+--------------+---------------+---------------+
8 rows in set (0.00 sec)

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

   
    
    
    
    
    
  

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