Enum DataType 

#[repr(u8)]
pub enum DataType {
    Unknown = 0,
    Integer = 1,
    UnsignedInteger = 2,
    Float = 3,
    Text = 4,
    Blob = 5,
    Boolean = 6,
    Timestamp = 7,
    Duration = 8,
    IpAddr = 9,
    MacAddr = 10,
    Vector = 11,
    Nullable = 12,
    Json = 13,
    Uuid = 14,
    NodeRef = 15,
    EdgeRef = 16,
    VectorRef = 17,
    RowRef = 18,
    Color = 19,
    Email = 20,
    Url = 21,
    Phone = 22,
    Semver = 23,
    Cidr = 24,
    Date = 25,
    Time = 26,
    Decimal = 27,
    Enum = 28,
    Array = 29,
    TimestampMs = 30,
    Ipv4 = 31,
    Ipv6 = 32,
    Subnet = 33,
    Port = 34,
    Latitude = 35,
    Longitude = 36,
    GeoPoint = 37,
    Country2 = 38,
    Country3 = 39,
    Lang2 = 40,
    Lang5 = 41,
    Currency = 42,
    ColorAlpha = 43,
    BigInt = 44,
    KeyRef = 45,
    DocRef = 46,
    TableRef = 47,
    PageRef = 48,
    Secret = 49,
    Password = 50,
    TextZstd = 51,
    BlobZstd = 52,
    AssetCode = 53,
    Money = 54,
}

Type identifier for column definitions

Variants

Unknown = 0

Polymorphic / “any” placeholder. Used by function-catalog signatures (e.g. JSON_SET(json, path, value) where value accepts any scalar) so the resolver can skip concrete type checking for that argument. Never appears in stored schemas.

Integer = 1

Signed 64-bit integer

UnsignedInteger = 2

Unsigned 64-bit integer

Float = 3

64-bit floating point

Text = 4

Variable-length UTF-8 text

Blob = 5

Variable-length binary data

Boolean = 6

Boolean (true/false)

Timestamp = 7

Unix timestamp (seconds since epoch)

Duration = 8

Duration in milliseconds

IpAddr = 9

IPv4 or IPv6 address

MacAddr = 10

MAC address (6 bytes)

Vector = 11

Fixed-dimension float vector (for similarity search)

Nullable = 12

Nullable wrapper (stores inner type in high nibble)

Json = 13

JSON-like structured data

Uuid = 14

UUID (16 bytes)

NodeRef = 15

Reference to a graph node (for unified queries)

EdgeRef = 16

Reference to a graph edge

VectorRef = 17

Reference to a vector in vector store

RowRef = 18

Reference to a table row (table_id, row_id)

Color = 19

RGB color (3 bytes)

Email = 20

Email address (validated, stored lowercase)

Url = 21

URL (validated)

Phone = 22

Phone number (stored as u64 digits)

Semver = 23

Semantic version (packed u32: major1M + minor1K + patch)

Cidr = 24

CIDR notation (IPv4 u32 + prefix u8 = 5 bytes)

Date = 25

Date only (i32 days since Unix epoch, no time)

Time = 26

Time only (u32 milliseconds since midnight)

Decimal = 27

Fixed-point decimal (i64 with configurable precision)

Enum = 28

Enumerated type (u8 index into variant list)

Array = 29

Array of values (homogeneous)

TimestampMs = 30

Timestamp with millisecond precision (i64 ms since epoch)

Ipv4 = 31

IPv4 address (u32)

Ipv6 = 32

IPv6 address ([u8; 16])

Subnet = 33

Network subnet (ip u32 + mask u32)

Port = 34

TCP/UDP port number (u16)

Latitude = 35

Geographic latitude (i32 microdegrees)

Longitude = 36

Geographic longitude (i32 microdegrees)

GeoPoint = 37

Geographic point (lat i32 + lon i32)

Country2 = 38

ISO 3166-1 alpha-2 country code ([u8; 2])

Country3 = 39

ISO 3166-1 alpha-3 country code ([u8; 3])

Lang2 = 40

ISO 639-1 language code ([u8; 2])

Lang5 = 41

IETF language tag, e.g. “pt-BR” ([u8; 5])

Currency = 42

ISO 4217 currency code ([u8; 3])

ColorAlpha = 43

RGBA color with alpha ([u8; 4])

BigInt = 44

Signed 64-bit integer (alias for large numbers)

KeyRef = 45

Reference to a KV pair (collection, key string)

DocRef = 46

Reference to a document (collection, entity_id)

TableRef = 47

Reference to a table/collection by name

PageRef = 48

Reference to a physical storage page

Secret = 49

Encrypted secret (AES-256-GCM ciphertext, keyed by vault AES key)

Password = 50

Argon2id password hash

TextZstd = 51

C3 TOAST: zstd-compressed UTF-8 text (> TOAST_THRESHOLD bytes). In-memory representation is always Value::Text — compression is transparent to all callers above the serialization layer.

BlobZstd = 52

C3 TOAST: zstd-compressed binary blob (> TOAST_THRESHOLD bytes). In-memory representation is always Value::Blob.

AssetCode = 53

General asset code (fiat or crypto), validated and normalized uppercase text

Money = 54

Monetary amount represented as minor units + scale + asset code

Implementations

impl DataType

pub fn category(&self) -> TypeCategory

Return the coercion category this type belongs to. Used by the Fase 3 operator / function resolver to group candidate types when picking an overload.

pub fn is_preferred(&self) -> bool

Is this type the preferred representative of its category? When the Fase 3 resolver has two equally-good candidates after exact-match counting, it picks the preferred one. Preferences are:

• Numeric: Float (highest precision, captures all integer values lossily for arithmetic purposes)
• String: Text
• DateTime: TimestampMs (milli precision beats second)
• Network: IpAddr (superset of Ipv4/Ipv6)
• Domain / Reference / Opaque / others: no preferred member (categories where every type is equally “native” so a tie means the user must be explicit).

impl DataType

pub fn to_byte(&self) -> u8

Serialize type to byte

pub fn from_byte(b: u8) -> Option<DataType>

Deserialize type from byte

pub fn from_sql_name(name: &str) -> Option<DataType>

Resolve a DataType from an SQL-level type name (case-insensitive). Accepts short SQL aliases (INT → Integer, STRING → Text) plus the canonical reddb names rendered by Display. Returns None for unknown / unsupported names so callers can surface a parse error.

pub fn from_sql_type_name(sql_type: &SqlTypeName) -> Option<DataType>

Resolve a DataType from a parsed SQL type name.

pub fn fixed_size(&self) -> Option<usize>

Returns the fixed size in bytes if known, None for variable-length types

pub fn is_indexable(&self) -> bool

Check if this type supports indexing

pub fn is_orderable(&self) -> bool

Check if this type supports ordering

Trait Implementations

impl Clone for DataType

fn clone(&self) -> DataType

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for DataType

impl Debug for DataType

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Display for DataType

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Eq for DataType

impl Hash for DataType

fn hash<__H>(&self, state: &mut __H)

where __H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for DataType

fn eq(&self, other: &DataType) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for DataType