mysql,其中字符串以数字结尾

Question

我的表列包含以下值:

id | item
-------------
1  | aaaa11a112
2  | aa1112aa2a
3  | aa11aa1a11
4  | aaa2a222aa

我想只选择项目值以数字结尾的行.有这样的事吗？

select * from table where item like '%number'

Answer 1

你可以使用REGEXP和字符类

select * from table where item REGEXP '[[:digit:]]$'

DEMO

说明:

[[:digit:]] >> Match digit characters
$           >> Match at the end of the string

在括号表达式中(使用[和]编写),[:character_class:]表示与属于该类的所有字符匹配的字符类.

边注:

其他有用的mysql字符类REGEXP,取自文档:

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