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add watch command while initializing metadata #155

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add watch command while initializing metadata #155

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687d1d0
update for ndc-spec v0.2 (#139)
hallettj Jan 22, 2025
cac4556
Merge branch 'v1'
hallettj Mar 1, 2025
e466b51
implement group by for single-column aggregates (#144)
hallettj Mar 1, 2025
c44aef9
implement count aggregates for group by (#145)
hallettj Mar 3, 2025
0c5d336
unify and optimize count aggregations over grouped and ungrouped data…
hallettj Mar 3, 2025
affae9d
Merge branch 'v1'
hallettj Mar 11, 2025
64e96ff
add watch command
paritosh-08 Mar 12, 2025
2468585
cargo update
paritosh-08 Mar 12, 2025
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45 changes: 45 additions & 0 deletions CHANGELOG.md
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This changelog documents the changes between release versions.

## [Unreleased]

### Added

- You can now group documents for aggregation according to multiple grouping criteria ([#144](https://github.com/hasura/ndc-mongodb/pull/144), [#145](https://github.com/hasura/ndc-mongodb/pull/145))

### Changed

- **BREAKING:** Update to ndc-spec v0.2 ([#139](https://github.com/hasura/ndc-mongodb/pull/139))
- **BREAKING:** Remove custom count aggregation - use standard count instead ([#144](https://github.com/hasura/ndc-mongodb/pull/144))
- Results for `avg` and `sum` aggregations are coerced to consistent result types ([#144](https://github.com/hasura/ndc-mongodb/pull/144))

#### ndc-spec v0.2

This database connector communicates with the GraphQL Engine using an IR
described by [ndc-spec](https://hasura.github.io/ndc-spec/). Version 0.2 makes
a number of improvements to the spec, and enables features that were previously
not possible. Highlights of those new features include:

- relationships can use a nested object field on the target side as a join key
- grouping result documents, and aggregating on groups of documents
- queries on fields of nested collections (document fields that are arrays of objects)
- filtering on scalar values inside array document fields - previously it was possible to filter on fields of objects inside arrays, but not on scalars

For more details on what has changed in the spec see [the
changelog](https://hasura.github.io/ndc-spec/specification/changelog.html#020).

Use of the new spec requires a version of GraphQL Engine that supports ndc-spec
v0.2, and there are required metadata changes.

#### Removed custom count aggregation

Previously there were two options for getting document counts named `count` and
`_count`. These did the same thing. `count` has been removed - use `_count`
instead.

#### Results for `avg` and `sum` aggregations are coerced to consistent result types

This change is required for compliance with ndc-spec.

Results for `avg` are always coerced to `double`.

Results for `sum` are coerced to `double` if the summed inputs use a fractional
numeric type, or to `long` if inputs use an integral numeric type.

## [1.7.0] - 2025-03-10

### Added
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