如何更新不同的数据库？

Question

如何将数据从“ testing”数据库更新到“ testing2”都有相同的列。

Sample Image

Answer 1

只需使用databasename.tablename.column将一个数据库更新为另一数据库表

示例

    update testing.tbl_customer 
inner join testing2.tbl_customer
on testing.tbl_customer.CustomerID=testing2.tbl_customer.CustomerID

set testing.tbl_customer.CustomerName=testing2.tbl_customer.CustomerName

如果您想更新更多列，只需使用逗号将列名放在set clase中

Answer 2

UPDATE testing2.tbl_customer c1
INNER JOIN testing.tbl_customer c2 ON c1.CustomerID = c2.CustomerID 
SET c1.CustomerName = c2.CustomerName,
    c1.Address = c2.Address, 
    c1.City = c2.City, 
    c1.PostalCode = c2.PostalCode, 
    c1.Country = c2.Country