Removing Brackets and the content within SQL query

I have a column in my database called Horse_Name. This currently includes the country if outside of UK in brackets (ire),(fra) ect.

Is it possible to run a query to remove the brackets and the content very much like in excel whereby you can replace all (*) within the given column?

An example would be as follows

Current                        Outcome

Horse_Name                    Horse_Name

Rocket(FRA)                  Rocket   
Apple Jade(IRE)              Apple Jade
Zac                          Zac

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I would like to go through the whole column named Horse_Name to remove the brackets and data.

I have tried the following code but it only finds the values and does not replace them

SELECT REPLACE(Horse_Name, SUBSTRING(Horse_Name, LOCATE('(', Horse_Name), LENGTH(Horse_Name) - LOCATE(')', REVERSE(Horse_Name)) - LOCATE('(', Horse_Name) + 2), '') AS Horse_Name
FROM TFResults;
Kind Regards,

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NorieAnalyst Assistant Commented:
You would need an UPDATE query for that, something like this perhaps.

SET Horse_Name = SUBSTRING(Horse_Name, LOCATE('(', Horse_Name), LENGTH(Horse_Name) - LOCATE(')', REVERSE(Horse_Name)) - LOCATE('(', Horse_Name) + 2), '')
runnerjp2005Author Commented:
Thanks - that does make sense but i am getting a syntax error Capture.PNG
NorieAnalyst Assistant Commented:
Try this.

SET Horse_Name = TRIM(SUBSTRING(CONCAT(Horse_Name,'('), 1, LOCATE('(', CONCAT(Horse_Name,'('))-1))

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runnerjp2005Author Commented:
The script looks to work to an extent but now I am running into another issue

To prevent duplicate entry's I use a key which is taken from horse name and the date (A horse would not complete twice on the same day). Why would updating the field cause a duplicate entry error?
runnerjp2005Author Commented:
Thanks for your help - I have successfully ran the script!
NorieAnalyst Assistant Commented:
What I suggested removes everything after the first '(' rather than everything within the brackets and the brackets themselves.

I can adjust the expression to only remove the latter if that's what you really need.
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Query Syntax

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