To return a result, scalar rules only require the field values of the record that is currently evaluated.

为返回一个结果，标量规则只需要记录的当前已评估字段值。

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The SHIP3 operator contains the statement that shows the result of the scalar subquery being bound in as a host variable.

SHIP3操作符包含一个语句，该语句表明标量子查询的结果放在一个主机变量中。

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The result of the scalar subquery first needs to be transferred to the federated server.

首先需要将标量子查询的结果传送到联邦服务器。

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