mysql,字符串以数字结尾 [英] mysql where string ends with numbers
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问题描述
我的表格列包含以下值:
My table column contains values like:
id | item
-------------
1 | aaaa11a112
2 | aa1112aa2a
3 | aa11aa1a11
4 | aaa2a222aa
我只想选择项目值以数字结尾的行. 有这样的东西吗?
I want to select only rows where value of item ends with numbers. Is there something like this?
select * from table where item like '%number'
推荐答案
您可以使用REGEXP
和字符类
select * from table where item REGEXP '[[:digit:]]$'
说明:
[[:digit:]] >> Match digit characters
$ >> Match at the end of the string
在方括号表达式(用[和]编写)中,[:character_class:]表示与该类所有字符匹配的字符类.
Within a bracket expression (written using [ and ]), [:character_class:] represents a character class that matches all characters belonging to that class.
旁注:
Other helpful mysql character classes to use with REGEXP
, taken from the documentation:
Character Class Name Meaning
alnum Alphanumeric characters
alpha Alphabetic characters
blank Whitespace characters
cntrl Control characters
digit Digit characters
graph Graphic characters
lower Lowercase alphabetic characters
print Graphic or space characters
punct Punctuation characters
space Space, tab, newline, and carriage return
upper Uppercase alphabetic characters
xdigit Hexadecimal digit characters
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