Prune nested fields #812
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Prune nested fields #812
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JamesRTaylor
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Superseded by #1435 |
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WIP patch to port over prestodb/presto#5547 to prestosql. To get pruning for nested fields, I believe it needs to be combined with #187, mainly taking the parquet reader/metadata changes and incorporate the MergeNestedColumn class.
Advice appreciated. :-)