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UPDATE multiple tables in MySQL using LEFT JOIN - Stack Overflow
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日期：2025-04-25
I have two tables, and want to update fields in T1 for all rows in a LEFT JOIN. For an easy example, update all rows of the following result-set: SELECT T1.* FROM T1 LEFT JOIN T2 ON T1.id = T2.id WHERE T2.id IS NULL The MySQL manual states that: ......看更多
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