MYSQL Join on meta key value?

You can update just joining both table on comparing same userid. like: 

update t1 join
       t2
       on t1.user_id = t2.user_id
    set t1.meta_value = t2.desc;

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Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)