/**
 * Constants for ClickHouse Native format.
 */
export declare const Compression: {
    readonly CHECKSUM_SIZE: 16;
    readonly HEADER_SIZE: 9;
    readonly FULL_HEADER_SIZE: 25;
};
export declare const BlockInfoField: {
    readonly End: 0;
    readonly IsOverflows: 1;
    readonly BucketNum: 2;
};
export declare const SerializationKind: {
    readonly Default: 0;
    readonly Sparse: 1;
    readonly Custom: 2;
};
export declare const LowCardinality: {
    readonly VERSION: 1n;
    readonly FLAG_ADDITIONAL_KEYS: bigint;
    readonly INDEX_TYPE_MASK: 255n;
    readonly INDEX_U8: 0n;
    readonly INDEX_U16: 1n;
    readonly INDEX_U32: 2n;
    readonly INDEX_U64: 3n;
    readonly INDEX_U8_MAX: 255;
    readonly INDEX_U16_MAX: 65535;
};
export declare const Dynamic: {
    readonly VERSION_V3: 3n;
};
export declare const JSONFormat: {
    readonly VERSION_V3: 3n;
};
export declare const Variant: {
    readonly MODE_BASIC: 0n;
    readonly MODE_COMPACT: 1n;
    readonly NULL_DISCRIMINATOR: 255;
};
export declare const Sparse: {
    readonly END_OF_GRANULE_FLAG: bigint;
};
export declare const UUID: {
    readonly BYTE_SIZE: 16;
};
export declare const IPv6: {
    readonly BYTE_SIZE: 16;
};
export declare const Decimal: {
    readonly BYTE_SIZE_32: 4;
    readonly BYTE_SIZE_64: 8;
    readonly BYTE_SIZE_128: 16;
    readonly BYTE_SIZE_256: 32;
};
/** Time conversion constants for Date/DateTime encoding */
export declare const Time: {
    /** Milliseconds per day (24 * 60 * 60 * 1000) */
    readonly MS_PER_DAY: 86400000;
    /** Milliseconds per second */
    readonly MS_PER_SECOND: 1000;
};
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