Enum DataType 

pub enum DataType {
    TinyInt,
    SmallInt,
    Integer,
    BigInt,
    Real,
    Decimal {
        precision: u8,
        scale: u8,
    },
    Text,
    Bytes,
    Boolean,
    Date,
    Time,
    Timestamp,
    Uuid,
    Json,
}

SQL data types supported by the query engine.

Variants

TinyInt

8-bit signed integer (-128 to 127).

SmallInt

16-bit signed integer (-32,768 to 32,767).

Integer

32-bit signed integer (-2^31 to 2^31-1).

BigInt

64-bit signed integer (-2^63 to 2^63-1).

Real

64-bit floating point number (IEEE 754 double precision).

Decimal

Fixed-precision decimal number.

Stored internally as i128 in smallest units. Example: DECIMAL(10,2) stores 123.45 as 12345.

Fields

precision: u8

Total number of digits (1-38).

scale: u8

Number of digits after decimal point (0-precision).

Text

Variable-length UTF-8 text.

Bytes

Variable-length binary data.

Boolean

Boolean value (true/false).

Date

Date (days since Unix epoch, i32).

Time

Time of day (nanoseconds within day, i64).

Timestamp

Timestamp (nanoseconds since Unix epoch, u64).

Uuid

UUID (RFC 4122, 128-bit).

Json

JSON document (validated, stored as text).

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 Debug for DataType

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

Formats the value using the given formatter.

impl Display for DataType

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

Formats the value using the given formatter.

impl Hash for DataType

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

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 Copy for DataType

impl Eq for DataType

impl StructuralPartialEq for DataType