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With SQL, you would use a single UPDATE command.
使用SQL，您将使用单个update命令。
You may have noticed that Listing 6 never executes the PreparedStatement that you constructed for the SQL UPDATE command.
您可能已经注意到清单 6 从未执行您为 SQL UPDATE 命令构造的 PreparedStatement。
He opens a command line window, connects to the SAMPLE database and unsuccessfully tries to update the employee salaries in the employee table. He issues the following SQL statements.
他打开一个命令行窗口，连接到SAMPLE数据库，并尝试更新employee表中的雇员工资(当然这样的尝试会遭到失败)。
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