Enum ValueRef

pub enum ValueRef<'a> {
    Null,
    Boolean(bool),
    TinyInt(i8),
    SmallInt(i16),
    Int(i32),
    BigInt(i64),
    HugeInt(i128),
    UTinyInt(u8),
    USmallInt(u16),
    UInt(u32),
    UBigInt(u64),
    Float(f32),
    Double(f64),
    Decimal(Decimal),
    Timestamp(TimeUnit, i64),
    Text(&'a [u8]),
    Blob(&'a [u8]),
    Date32(i32),
    Time64(TimeUnit, i64),
}

A non-owning static type value. Typically the memory backing this value is owned by SQLite.

See Value for an owning dynamic type value.

Variants

Null

The value is a NULL value.

Boolean(bool)

The value is a boolean.

TinyInt(i8)

The value is a signed tiny integer.

SmallInt(i16)

The value is a signed small integer.

Int(i32)

The value is a signed integer.

BigInt(i64)

The value is a signed big integer.

HugeInt(i128)

The value is a signed huge integer.

UTinyInt(u8)

The value is a unsigned tiny integer.

USmallInt(u16)

The value is a usigned small integer.

UInt(u32)

The value is a usigned integer.

UBigInt(u64)

The value is a usigned big integer.

Float(f32)

The value is a f32.

Double(f64)

The value is a f64.

Decimal(Decimal)

The value is a decimal

Timestamp(TimeUnit, i64)

The value is a timestap.

Text(&'a [u8])

The value is a text string.

Blob(&'a [u8])

The value is a blob of data

Date32(i32)

The value is a date32

Time64(TimeUnit, i64)

The value is a time64

Implementations

impl ValueRef<'_>

pub fn data_type(&self) -> Type

Returns DuckDB fundamental datatype.

impl<'a> ValueRef<'a>

pub fn as_str(&self) -> FromSqlResult<&'a str>

If self is case Text, returns the string value. Otherwise, returns Err(Error::InvalidColumnType).

pub fn as_blob(&self) -> FromSqlResult<&'a [u8]>

If self is case Blob, returns the byte slice. Otherwise, returns Err(Error::InvalidColumnType).

Trait Implementations

impl<'a> Clone for ValueRef<'a>

fn clone(&self) -> ValueRef<'a>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'a> Debug for ValueRef<'a>

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

Formats the value using the given formatter.

impl<'a> From<&'a [u8]> for ValueRef<'a>

fn from(s: &[u8]) -> ValueRef<'_>

Converts to this type from the input type.

impl<'a> From<&'a Value> for ValueRef<'a>

fn from(value: &'a Value) -> ValueRef<'a>

Converts to this type from the input type.

impl<'a> From<&'a str> for ValueRef<'a>

fn from(s: &str) -> ValueRef<'_>

Converts to this type from the input type.

impl<'a, T> From<Option<T>> for ValueRef<'a>

where T: Into<ValueRef<'a>>,

fn from(s: Option<T>) -> ValueRef<'a>

Converts to this type from the input type.

impl From<ValueRef<'_>> for Value

fn from(borrowed: ValueRef<'_>) -> Value

Converts to this type from the input type.

impl<'a> PartialEq for ValueRef<'a>

fn eq(&self, other: &ValueRef<'a>) -> 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<'a> Copy for ValueRef<'a>

impl<'a> StructuralPartialEq for ValueRef<'a>