If the operator is rewound (for example, by a Nested Loops operator) but no rebinding is needed, the spooled data is used instead of rescanning the input.

• 如果重绕该运算符(例如通过Nested Loops运算符重绕),但不需要任何重新绑定,则将使用假脱机数据,而不用重新扫描输入。