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Re: Pushing query execution to DataNode
Posted by: Mikael Ronström
Date: September 22, 2015 11:53PM

NDB can push down conditions and in some cases even entire joins. I am pretty sure it cannot push down this type of query since the condition rn = 1 is actually a complex condition where rn isn't easy to calculate.

You can probably achieve the push down by rewriting the query in such a way
for MySQL to discover the condition part which needs to be pushed down to NDB.

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Re: Pushing query execution to DataNode
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September 22, 2015 11:53PM


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