每个参数的类型必须匹配它的格式指定者。

The type of each parameter must match its format specifier.

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Steward：单击图标，然后选择一个用户ID以指定管理者。

Steward: Click on the icon, and select a user ID to assign a steward.

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对于子句 when matched，delete 与 update 命令互斥，这意味着在 merge 语句中同时只能指定两者之一。

The delete and update commands are mutually exclusive for the when matched clause, which means that only one of them can be specified in a merge statement at a time.

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