The compilation of the query on the remote server and fetching of enough data to fill the ATQ buffer on all legs of the UNION will proceed in parallel.
查询在远程服务器上的编译,以及取足够的数据来填充union所有分支上的AT Q缓冲区,这两个过程是并行进行的。
You first must create the buffer, fill it, then rewind the position to the beginning so you can read from the start.
必须首先创建一个缓冲区,先填充它,然后将位置倒回起始点,这样才能从头读。
Return of data to the federated server sufficient to fill a single ATQ buffer.
将足以填充一个AT Q缓冲区的数据返回到联邦服务器。
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