I'm trying to update one database containing NBA players by linking their uid from another database. How would I go about linking each players specific UID to their unique player name in this table? Would I be using an 
UPDATE or an INSERT INTO query?  I understand how to update regularly, I'm just stuck on the part of having the right players id with their name. (I couldn't manually insert their uid as there as 500+ players)
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                    provide sample datas from these tables and show us the expected output. we would like to know what columns are in what table. – Sas Apr 13 '18 at 18:33
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                    `INSERT INTO` is for creating new rows, `UPDATE` is for modifying existing rows. – Barmar Apr 13 '18 at 18:35
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                    It sounds like you need to use `UPDATE` with `JOIN` to copy values from one table to related rows in another table. – Barmar Apr 13 '18 at 18:35