Except the number of tasks, can we confirm whether to use index from the log
file?
Such as something like keyword for us to search in the log file directly.
-
FFCS研究院
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If the index be used, the number of tasks would be less.
Can you share your script (create table script and query script), let us
check if you created the effective index for filter columns.
Regards
Liang
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oin" operation by their primary key, the
> primary key of these 2 tables are both type "String".
>
> There are 200 million pieces of data in the big table and only 20
> throusand pieces of data in the small table.
>
> This join operation is quite slow.
> I want to k
slow.
I want to know does index be used when doing "join" operation between a big
table and a small table?
And how to confirm whether index be used?
sunerhan1...@sina.com
