SELECT查询在查询过滤器中指定图像处理函数，现在，这些查询的运行速度得到了提高，因为它们使用索引判断每个元组(tuple)是否满足查询。

SELECT queries that specify image processing functions in their query filters now run faster because they use the index to determine whether or not each tuple satisfies the query.

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在保存所有图像之后，检查需要处理的图像的最少数量将触发对delayrotate函数的调用，该调用支持超时。

After each image is saved, a check for a minimum number of images to process will trigger a timeout-enabled call to the delayRotate function.

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在开始处理客户到服务器的连接前，需要首先确保图像能调用函数。

Before you start dealing with client-to-server connections, you've got to make sure your images call a function. So let's start with a simple placeholder JavaScript function.

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