lgbo

Is there any formal grammar for the definition of query/plan?

[CH-76]support running union on native engine

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## What changes were proposed in this pull request? add support for running union operation on native engine ## How was this patch tested? (Please explain how this patch was...

[CH-156]enable sort op on clickhouse

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## What changes were proposed in this pull request? support sort op on clickhouse engine. ## How was this patch tested? (Please explain how this patch was tested. E.g. unit...

[CH-45]Support count(1)/count(*)

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Relate to the issue https://github.com/Kyligence/ClickHouse/issues/45 ## What changes were proposed in this pull request? A empty base_schema will be made in the `scan` node when run the following queries ```SQL...

New window function `percent_rank`

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### Changelog category (leave one): - New Feature ### Changelog entry (a user-readable short description of the changes that goes to CHANGELOG.md): Add new window function `percent_rank`. ### Documentation entry...

Add output schema in plan node

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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...

[GLUTEN-6345][CH] Deprecate SCALAR_FUNCTIONS in SerializedPlanParser

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## What changes were proposed in this pull request? (Please fill in changes proposed in this fix) Fixes: #6345 ## How was this patch tested? (Please explain how this patch...

### Description deprecate `SCALAR_FUNCTIONS` in `SerializedPlanParser`

[GLUTEN-6213][CH] Reduce memory usage for some window functions

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## What changes were proposed in this pull request? (Please fill in changes proposed in this fix) Fixes: #6213 ## How was this patch tested? (Please explain how this patch...

### Backend CH (ClickHouse) ### Bug description [Expected behavior] and [actual behavior]. When the partition is too large, OOM is too easy to occur. For an example, `row_number` doesn't need...