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The resourcing should hoist any subquery that contains a no_dataset_from_transform

Description

The following code in hqlresource.cpp(~720) can cause problems:

//Generally this appears to be better to hoist since it involves calling a transform. if (ds->getOperator() == no_dataset_from_transform) return true; if (canProcessInline(NULL, ds)) return false;

In particular, count(f(inline)) is not hoisted, but the inline dataset will be hoisted, leading to inefficient spilling.

Found when investigating https://hpccsystems.atlassian.net/browse/HPCC-12527#icft=HPCC-12527

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Pull Request URL

https://github.com/hpcc-systems/HPCC-Platform/pull/9199

Created September 29, 2016 at 10:31 AM
Updated April 5, 2017 at 11:34 AM
Resolved April 5, 2017 at 11:34 AM