使用regexp關鍵字指定正規表示式的字元匹配模式。
mysql>
select
*from fruits where f_name regexp
'^a';+
------+--------+-------+
| f_id | f_name | price |
+------+--------+-------+
|1005|
+------+--------+-------+
1row
inset
(0.00 sec)
mysql>
select
*from fruits where f_name regexp
'^ba';+
------+--------+-------+
| f_id | f_name | price |
+------+--------+-------+
|103
| banana |12|
+------+--------+-------+
1row
inset
(0.00 sec)
mysql>
select
*from fruits where f_name regexp
'n$';+
------+------------+-------+
| f_id | f_name | price |
+------+------------+-------+
|102
| melon |8|
|106
| watermelon |20|
+------+------------+-------+
2rows
inset
(0.00 sec)
mysql>
select
*from fruits where f_name regexp
'le$';+
------+--------+-------+
| f_id | f_name | price |
+------+--------+-------+
|1005|
+------+--------+-------+
1row
inset
(0.00 sec)
mysql>
select
*from fruits where f_name regexp
'e.o';+
------+------------+-------+
| f_id | f_name | price |
+------+------------+-------+
|102
| melon |8|
|106
| watermelon |20|
+------+------------+-------+
2rows
inset
(0.00 sec)
mysql>
select
*from fruits where f_name regexp
'^ap*';+
------+--------+-------+
| f_id | f_name | price |
+------+--------+-------+
|1005|
|110
| alpp |10|
+------+--------+-------+
2rows
inset
(0.00 sec)
mysql>
select
*from fruits where f_name regexp
'^ap+';+
------+--------+-------+
| f_id | f_name | price |
+------+--------+-------+
|1005|
+------+--------+-------+
1row
inset
(0.00 sec)
mysql>
select
*from fruits where f_name regexp
'ap|on';+
------+------------+-------+
| f_id | f_name | price |
+------+------------+-------+
|1005|
|102
| melon |8|
|106
| watermelon |20|
+------+------------+-------+
3rows
inset
(0.00 sec)
mysql>
select
*from fruits where f_name regexp
'[on]'
;//匹配有o或者有n的字串
+------+------------+-------+
| f_id | f_name | price |
+------+------------+-------+
|101
| orange |10|
|102
| melon |8|
|103
| banana |12|
|104
| mango |20|
|106
| watermelon |20|
+------+------------+-------+
5rows
inset
(0.00 sec)
[^xyz] ：只要字元中有非xyz即可，如axyz。
[^xyz]$ :只要結尾字元不是xyz即可。
mysql>
select
*from fruits where f_name regexp
'[^on]$';+
------+--------+-------+
| f_id | f_name | price |
+------+--------+-------+
|1005|
|101
| orange |10|
|103
| banana |12|
|105
| water |5|
|107
| pear |
null|+
------+--------+-------+
5rows
inset
(0.00 sec)
a :a至少連續出現n次
a :a至少連續出現n次，少於m次
abc :ab後至少有n個c
(abc) :至少有n個abc
mysql>
select
*from fruits where f_name regexp
'an';+
------+--------+-------+
| f_id | f_name | price |
+------+--------+-------+
|101
| orange |10|
|103
| banana |12|
|104
| mango |20|
+------+--------+-------+
3rows
inset
(0.00 sec)
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