Once the first block is exhausted, the application is immediately given the rows from the second block that were pre-fetched as DB2 Connect moved ahead and requests the next block.
当第一个块被取尽之后,应用程序可以立即得到预取的第二个块中的行,并接着请求下一个块。
So given some input of N elements, first, if N is less than 2, I return immediately.
给出N个元素的一些输入,首先,如果N小于,就立即返回。
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