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【已解决】有关Broadcast Join的一个问题

Asked Apr 9, 2024 Modified Apr 10, 2024
Viewed 75
2.1

看到一个broadcast join:

image.png

这里的BROADCAST是说把右边那个子树的join结果给broadcast了吗?

edited Apr 10, 2024
James Xu9
asked Apr 9, 2024
1 Answers

是的,右边树的结果广播到左边树去join;
如果右边结果集较大,可以手动改成其它join方式或者进行相应调参优化:Doris Join 优化

edited Jan 1, 1970
张彬华7698
answered Apr 10, 2024
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