For example, in the previous query db2exfmt output, if you examine the details of the above DTQ (2) operator you will notice.
例如,在前面的查询db 2 exfmt输出中,如果检查d TQ(2)的细节,就会注意到。
This tells us that the output stream or results of the DTQ are flowing to a single coordinator partition, which implies that the cardinality at DTQ (2) does not need to be multiplied by 2.
这告诉我们,输出流(即d TQ的结果)流向一个协调器分区,这意味着DTQ(2)的基数不需要乘以2。
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