{3,} means the a must occur at least three times : Introduction « Regular Expression « SQL / MySQL






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  3. Introduction

{3,} means the a must occur at least three times

       
mysql>
mysql> SELECT 'aaaa' REGEXP 'a{3,}';
+-----------------------+
| 'aaaa' REGEXP 'a{3,}' |
+-----------------------+
|                     1 |
+-----------------------+
1 row in set (0.00 sec)








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11.String case in regular expression
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22.Square brackets indicate a selection from among several characters, a hyphen is used to indicate a range of ch