Update left join mysql

This article is tagged with: Update left join mysql and mysql

update left join mysql

UPDATE t1
LEFT JOIN
t2
ON t2.id = t1.id
SET t1.col1 = newvalue
WHERE t2.id IS NULL

mysql UPDate with enner join

UPDATE T1, T2,
[INNER JOIN | LEFT JOIN] T1 ON T1.C1 = T2. C1
SET T1.C2 = T2.C2,
    T2.C3 = expr
WHERE condition

This article is tagged with: Update left join mysql and mysql