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GH-508: Finalize Variant and shredding specs #509

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Merged
wgtmac merged 1 commit into from
Aug 25, 2025
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GH-508: Finalize Variant and shredding specs #509

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3 changes: 0 additions & 3 deletions VariantEncoding.md
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# Variant Binary Encoding

> [!IMPORTANT]
> **This specification is still under active development, and has not been formally adopted.**

A Variant represents a type that contains one of:
- Primitive: A type and corresponding value (e.g. INT, STRING)
- Array: An ordered list of Variant values
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3 changes: 0 additions & 3 deletions VariantShredding.md
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# Variant Shredding

> [!IMPORTANT]
> **This specification is still under active development, and has not been formally adopted.**

The Variant type is designed to store and process semi-structured data efficiently, even with heterogeneous values.
Query engines encode each Variant value in a self-describing format, and store it as a group containing `value` and `metadata` binary fields in Parquet.
Since data is often partially homogeneous, it can be beneficial to extract certain fields into separate Parquet columns to further improve performance.
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