Typically, the optimizer chooses merge scan join when the cardinality of the outer input is not obviously small and there is no efficient access method for the inner table.

通常情况下，在外部输入的基数显然不小且对于内部表没有一种有效的访问方法时，优化器会选择合并扫描联接。

youdao

Now that's obviously small, but it is growing.

目前看来它显然只占很小的份额，但是却在增长中。

youdao

Obviously, small miscellaneous grain has comprehensive benefit and power of competition in agricultural production.

可见，小杂粮在农业生产中具有显著的综合效益和产业竞争力。

youdao

And again there, too, you saw an experimental result you were presented with that says, well at least to the extent that it could be measured, it was obviously getting very small.

再一次，你看到了一个,你经知道的实结果，至少在实验测量的范围内，对理想气体条件下的气体这一项很小。

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He described provincials as being dominated by routine and monotony in their small towns, that they're all the same, he wrote, which is obviously not the case.

他把乡下人描绘成在小城镇中,过着千篇一律的单调生活,他写道,他们全是一个模子里刻出来的,情况显然不是这样

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And obviously small businesses are a major source of job creation.

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By art collectors' standards, this is obviously small fry.

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It was obviously no small challenge to migrate from being a pure digital creation company to one that also delivers a physical product.

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