substrait

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Questions about exchangeKind of ExchangeRel

5

I am trying to add support in Isthmus for converting Apache Calcite `LogicalExchange`, as what I described in https://github.com/substrait-io/substrait-java/issues/153. But I run into some problems about how to map the...

whutjs

Basic functions

2

Hey this library looks amazing and I'd love to use it. Thanks! I went through the docs and seems like there are some basic functions missing like min, max etc....

dioptre

Should we add an `is_in` function?

5

Currently, in Acero, we've been mapping `is_in` to `SingularOrList`. The latter is more generic, and so this is safe, but it doesn't round trip well and `is_in` is more efficient....

westonpace

Add a proto definition for "Merging Capture" and "Simple Capture"

1

These relations are described in the physical relations section of the site. However, no such proto exists for them. I believe these relations commonly represent the other half of a...

westonpace

Clarifying `start` and `length` in `ReadRel`

7

Hi, I just came a cross an issue when running Velox on a parquet file. My plan omitted the `start` and `length` fields of the `LocalFiles` message which caused both...

save-buffer

Clarify name matching for functions, datatypes, and options

1

#504 led to a discussion in one of the fortnightly calls about how to perform matching: Snippet from the agenda notes from the Substrait fortnightly meeting on May 24th, 2023:...

gforsyth

feat: add APPLY operator representation

6

This PR adds a new relation type for APPLY operation. APPLY is similar to JOIN operator since it joins two table sources. However, in APPLY, the table source on the...

ashvina

feat: add isPartial flag in fetchRel and SortRel

13

In velox topn/orderby/limit node, there need a boolean indicating whether the node generates partial results on local workers or finalizes the partial result.

ZJie1

feat: add arg_min and arg_max

14

This PR includes adding aggregate functions `arg_min` and `arg_max` to `functions_arithmetic.yaml`

vibhatha

Add output schema in plan node

2

There is only `names` in `RelRoot`. But we need a exact definition of the output schema in some cases. What about adding a new field of `struct` to define the...

lgbo-ustc