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转载：http://stackoverflow.com/questions/3845718/sql-how-to-update-table-values-from-another-table-with-the-same-user-name文章内容如下所示：sql: how to update table values from another table with the same user name?question： I have two tables, with a same column named user_name, saying table_a, table_b. I wa... 阅读全文
