MySQL SELECT LIKE space encoding issue? - mysql

Question

I have spent several hours to solve this problem, but I can't solve it.
One of column contain value like bellow, and the value contain some blank spaces.
光学传感器 - 光电二极管
I want select all the value equal to "光学传感器 - 光电二极管". But the blank space may be ASCII encoding('\x0a'), or utf8 encoding('\xa0'), So when I execute SQL string LIKE this, will return None.
SELECT *
FROM `icbase_icattrvalue`
WHERE `value` LIKE '光学传感器 - 光电二极管'
I have try SQL like this:
SELECT *
FROM `icbase_icattrvalue`
WHERE REPLACE( `value` , '\xa0', ' ' ) LIKE REPLACE( '光学传感器 - 光电二极管', '\xa0', ' ' )
LIMIT 0 , 30
or
SELECT *
FROM `icbase_icattrvalue`
WHERE REPLACE(`value`, CONVERT(char(160) USING utf8), ' ')
LIKE REPLACE('光学传感器 - 电二极管', CONVERT(char(160) USING utf8), ' ')
LIMIT 0 , 30
or some similar SQL string, But they can't help, they all return None.
What should I to , to select value equal to a string, but ignore such space encoding issue.
I'm sorry for my poor English.

Answer 1

As Alexander Gelbukh says in comment i also think that this is due to the incorrect spacing in ur code..
SELECT *
FROM `icbase_icattrvalue`
WHERE REPLACE( `value` , '\xa0', ' ' ) LIKE REPLACE( '光学传感器 - 光电二极管', '\xa0', ' ' )
LIMIT 0 , 30

Answer 2

Actually this is the right answer, I should replace c2a0, not a0.
NON BREAK SPACE in utf-8 is c2a0
And in python unicode is a0
I get confused with it, Thanks everybody.
SELECT * FROM `icbase_icattrvalue`
WHERE id = 197193 and
REPLACE( `value` , UNHEX('c2a0'), ' ' ) = REPLACE( '光学传感器 - 光电二极管', UNHEX('c2a0'), ' ' );