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### Describe the bug
In `org.apache.comet.parquet.CometParquetPartitionReaderFactory#createColumnarReader` we only call `buildCometReader` if prefetch is enabled, and prefetch is disabled by default.…
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Related issues: #9402, #8837
There are some improvements we want to do for AND filter operator:
- Avoid scanning the docs from the low selectivity filter when applying AND
- Skip using indexes wh…
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#4392 has multiple parts that we should investigate separately.
This is the issue for the permission errors that we might get when planning views recursively.
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In #4392, the main proble…
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When user writes a query to convert REAL Type to DOUBLE type, there could be an issue.
![image](https://user-images.githubusercontent.com/32091981/85218307-f3a8c880-b34d-11ea-93a8-dfdb740ff423.png)…
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Within the Dutch Profile Location/gml:pos has not been explictly tagged with EPSG:28992 for the reason that DefaultLocationSystem has been specified at FrameDefault level, hence inheritance is expecte…
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Matt and I chatted offline about #166 and potential traps when implementing ``set_index``.
Generally, we shouldn't use ``divisions`` while simplifying the Expression tree and pushing stuff up and …
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### Checks
- [X] I have checked that this issue has not already been reported.
- [X] I have confirmed this bug exists on the [latest version](https://pypi.org/project/polars/) of Polars.
### Reprodu…
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```sql
explain verbose
select count(1) from dm.iot_sqt_agv_count
/*
"Aggregate (cost=3421.53..3421.54 rows=1 width=8)"
" Output: count(1)"
" -> Foreign Scan on dm.iot_sqt_agv_count (cost=1…
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**Failed SQL**
Search for `Failed SQL` log message:
```
data-product-cube-1 | Cube SQL Error: undefined
data-product-cube-1 | --
data-product-cube-1 | "SELECT * FROM sessions_count_view WHER…
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**Describe the bug**
Trying to read a partitioned parquet dataset while still allowing predicate pushdown on partition columns, I am manually constructing a table scan Logical plan on a manually cons…