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const ClickhouseCodecMetadata = "d8a.warehouse.clickhouse.codec"

ClickhouseCodecMetadata is the metadata key used to indicate that a field should have a CODEC clause in ClickHouse DDL

const ClickhouseLowCardinalityMetadata = "d8a.warehouse.clickhouse.low_cardinality"

ClickhouseLowCardinalityMetadata is the metadata key used to indicate that a field should be stored as LowCardinality in ClickHouse

const ColumnDescriptionMetadataKey = "d8a.column.description"

ColumnDescriptionMetadataKey is the metadata key used to store column descriptions in Arrow field metadata. This is used to pass descriptions from schema definitions to warehouse drivers (e.g., BigQuery) that support column descriptions.