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Posted to commits@gluten.apache.org by "lgbo-ustc (via GitHub)" <gi...@apache.org> on 2024/09/04 05:50:43 UTC
[I] [CH]Pushdown extra projection before `expand` [incubator-gluten]
lgbo-ustc opened a new issue, #7112:
URL: https://github.com/apache/incubator-gluten/issues/7112
### Description
For following query
```sql
select x, y, count(if(a > 0, b, c)) as n from t
group by x, y with cube
```
It will add an extra projection after `expand` for pre-calculating `if(a>0,b, c)`.
For performance, we should push down the projection before `expand`
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Re: [I] [CH]Pushdown extra projection before `expand` [incubator-gluten]
Posted by "lgbo-ustc (via GitHub)" <gi...@apache.org>.
lgbo-ustc commented on issue #7112:
URL: https://github.com/apache/incubator-gluten/issues/7112#issuecomment-2330883766
before pushdown
after pushdown
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Re: [I] [CH]Pushdown extra projection before `expand` [incubator-gluten]
Posted by "lgbo-ustc (via GitHub)" <gi...@apache.org>.
lgbo-ustc closed issue #7112: [CH]Pushdown extra projection before `expand`
URL: https://github.com/apache/incubator-gluten/issues/7112
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