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### Is your feature request related to a problem or challenge?
Substrait relations have the concept of an emit kind, which can either be:
* **Direct**: which is the default order and outputs fields …
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### Description
The copy of Substrait has diverged from the source repository. Ideally the fork would be removed and the official version would be used directly.
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👋 I'm a core contributor to [GeoArrow](https://github.com/geoarrow/geoarrow), but I'm new to substrait and just reading through the docs.
I was surprised to see that a geospatial extension was alre…
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Unfortunately, my queries seem to hit the [Aggregate relations do not yet support output mapping changes](https://github.com/substrait-io/substrait-cpp/blob/main/src/substrait/textplan/converter/Initi…
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### Is your feature request related to a problem or challenge?
I am trying to take a filter expression created by pyarrow and convert it into a filter expression for Datafusion to satisfy. I am usin…
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### What happened?
Per [Substrait spec](https://substrait.io/relations/logical_relations/#read-properties), the Read operator supports Properties field with a list of name/value pairs associated. I…
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- Put it in a separate crate, parallel to `[optd-datafusion-bridge](https://github.com/cmu-db/optd/tree/main/optd-datafusion-bridge)`
- There exists a crate under the `datafusion` tree, `datafusion-s…
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There are several grammars for the same thing in Substrait subprojects.
1. There was originally a [type parser built in substrait-java](https://github.com/substrait-io/substrait-java/blob/main/core/s…
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### What happened?
Ibis supports both row-based and range-based OVER window semantics, showing below:
```
import ibis
from ibis import _
bid_schema = ibis.schema(
{
"auction": "in…
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Spark queries with `Window` functions fail in the gateway with error - `"window expression type not supported"`
Snippet to recreate error:
```
get_customer_database(spark_session)
.withColumn(
…