mysql - Variable in trigger doesn't work for me -

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I am trying to create a new trigger like this. But it gives me an error. DELIMITER Email at SENT @ cnt = (SELECT count (*) by email ID where position = 'left'); If @cnt = 0 then - my question is Eid IF; END $$ DELIMITER;

This trigger returns this kind of error

Enter the image </ p> </ div> <p> <div class =

You for every line 

  Enter email for each line before email / post.

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