搜索2个表以查找唯一条目，然后更改数据

Question

The goal is to search two similar tables for a single line of data.

UPDATE
regusers_test AS rt
INNER JOIN
alt_toon_test AS att
ON
att.`toonname` = rt.`toonname`
SET
rt.`server` = CASE WHEN rt.`username`='$user' AND rt.`server`='$oserver' AND rt.`toonname`='$otoon' THEN '$server' ELSE rt.`server`
att.`server` = CASE WHEN att.`username`='$user' AND att.`server`='$oserver' AND att.`toonname`='$otoon' THEN '$server' ELSE att.`server`
WHERE
(
rt.`username`='$user' AND rt.`server`='$oserver' AND rt.`toonname`='$otoon'
)
OR
(
att.`username`='$user' AND att.`server`='$oserver' AND att.`toonname`='$otoon'
)

But i keep getting:

You have an error in your SQL syntax; check the manual that corresponds to your mySQL server version for the right syntax to use near 'att.'server'=Case When att.'username'='$user'...

I did a lot of google searches over the weekend and couldn't find a solution. Hopefully someone here knows what's up.

Answer 1

SET requires , between assignments.

EDIT Fixed your query:

UPDATE
regusers_test AS rt
INNER JOIN
alt_toon_test AS att
ON
att.`toonname` = rt.`toonname`
SET
rt.`server` = CASE WHEN rt.`username`='$user' AND rt.`server`='$oserver' AND rt.`toonname`='$otoon' THEN '$server' ELSE rt.`server`,
att.`server` = CASE WHEN att.`username`='$user' AND att.`server`='$oserver' AND att.`toonname`='$otoon' THEN '$server' ELSE att.`server`
WHERE
(
rt.`username`='$user' AND rt.`server`='$oserver' AND rt.`toonname`='$otoon'
)
OR
(
att.`username`='$user' AND att.`server`='$oserver' AND att.`toonname`='$otoon'
)

Answer 2

You just missed the , between columns near

SET
rt.`server` = CASE WHEN rt.`username`='$user' AND rt.`server`='$oserver' AND rt.`toonname`='$otoon' THEN '$server' ELSE rt.`server` END ,
att.`server` = CASE WHEN att.`username`='$user' AND att.`server`='$oserver' AND att.`toonname`='$otoon' THEN '$server' ELSE att.`server` END