Enum sql_ast::ast::Value

pub enum Value {
    Number(String),
    SingleQuotedString(String),
    NationalStringLiteral(String),
    HexStringLiteral(String),
    Boolean(bool),
    Date(String),
    Time(String),
    Timestamp(String),
    Interval {
        value: String,
        leading_field: DateTimeField,
        leading_precision: Option<u64>,
        last_field: Option<DateTimeField>,
        fractional_seconds_precision: Option<u64>,
    },
    Null,
    Default,
}

Primitive SQL values such as number and string

Variants

Number(String)

Numeric literal

SingleQuotedString(String)

‘string value’

NationalStringLiteral(String)

N’string value’

HexStringLiteral(String)

X’hex value’

Boolean(bool)

Boolean value true or false

Date(String)

DATE '...' literals

Time(String)

TIME '...' literals

Timestamp(String)

TIMESTAMP '...' literals

Interval

INTERVAL literals, roughly in the following format: INTERVAL '<value>' <leading_field> [ (<leading_precision>) ] [ TO <last_field> [ (<fractional_seconds_precision>) ] ], e.g. INTERVAL '123:45.67' MINUTE(3) TO SECOND(2).

The parser does not validate the <value>, nor does it ensure that the <leading_field> units >= the units in <last_field>, so the user will have to reject intervals like HOUR TO YEAR.

Fields

value: String

leading_field: DateTimeField

leading_precision: Option<u64>

last_field: Option<DateTimeField>

fractional_seconds_precision: Option<u64>

The seconds precision can be specified in SQL source as INTERVAL '__' SECOND(_, x) (in which case the leading_field will be Second and the last_field will be None), or as __ TO SECOND(x).

Null

NULL value

Default

use the default value

Trait Implementations

impl Clone for Value

fn clone(&self) -> Value

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Value

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

Formats the value using the given formatter.

impl Display for Value

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

Formats the value using the given formatter.

impl Hash for Value

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 Value

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

This method tests for self and other values to be equal, and is used by ==.

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

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

impl Eq for Value

impl StructuralPartialEq for Value