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。
The statement associated with the SHIP1 operator shows the scalar subquery being computed on Oracle.
与SHIP1操作符相关的语句表明该标量子查询在Oracle上计算。
You can use a scalar subquery to select a specific value that will be used in the expression of the WHERE clause.
可以使用标量子查询选择将用于where子句的表达式中的特定值。
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