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**Describe the bug**
It is unclear what `Statistics::is_exact` = `false` means. The docs are here:
https://github.com/apache/arrow-datafusion/blob/a578150e63e344fbaa7d13eda58544482dea4729/datafusi…
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![PDA ](https://user-images.githubusercontent.com/113493181/192076695-7e69170e-2950-4aca-ab29-b9fb1b05a797.jpg)
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Discovered in Spark, when returning an empty projection from a Parquet file with filter pushdown enabled (typically when doing filter + count), Parquet-Mr returns a wrong number of rows with column in…
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We recently found that querying Pinot (0.8.0) `upsert` enabled tables can return duplicated via Trino (362).
## Steps to reproduce
1. Set up a single-partition Kafka topic `topic1` keyed on `A` …
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# (BigQuery) [SQL pushdown is generally available (GA).](https://cloud.google.com/bigquery/docs/release-notes#May_19_2023)
## 概要
[SQL プッシュダウン](https://cloud.google.com/blog/ja/products/data-anal…
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How are action that take multiple ticks/frames (e.g. movement) supposed to be implemented? Running the whole tree for many actors each frame isnt performant enough.
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Map Databricks tables and columns to virtual schema.
#### Out of scope
* Pushdown queries
* Execute SQL
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### Description
This is easy to see on the cloud but here's one way to see it locally in a MRE
Setup:
```
import os
os.environ['POLARS_VERBOSE']='1'
import polars as pl
from pathlib import Pa…
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Would it be possible to target presto to mysql/postgresql directly and support disabling deploying hive? It may be much simpler to use for those that don't have large clusters.
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![WhatsApp Image 2022-09-20 at 10 56 17 AM](https://user-images.githubusercontent.com/113331717/191444415-ea14e2b0-b019-4a9f-803a-37e8ce790228.jpeg)