Enum SqlType 

pub enum SqlType {
    Bool,
    Int32,
    Int64,
    Uint32,
    Uint64,
    Float32,
    Float64,
    Numeric {
        precision: Option<u8>,
        scale: Option<u8>,
    },
    Varchar,
    Varbinary,
    Date,
    Time,
    Datetime,
    Timestamp,
    Interval,
    Array(Box<SqlType>),
    Struct(Vec<StructField>),
    Json,
    Range(Box<SqlType>),
    Uuid,
    Unknown,
    Any,
}

A SQL data type used during semantic analysis.

Type names follow ISO SQL standards:

• Int32 displays as “INTEGER”
• Int64 displays as “BIGINT”
• Float32 displays as “REAL”
• Float64 displays as “DOUBLE PRECISION”
• Varchar displays as “VARCHAR”
• Varbinary displays as “VARBINARY”

Variants

Bool

Boolean type (BOOLEAN)

Int32

32-bit signed integer (INTEGER)

Int64

64-bit signed integer (BIGINT)

Uint32

32-bit unsigned integer (UINTEGER) - extension

Uint64

64-bit unsigned integer (UBIGINT) - extension

Float32

32-bit floating point (REAL)

Float64

64-bit floating point (DOUBLE PRECISION)

Numeric

Fixed-precision decimal (NUMERIC/DECIMAL)

Fields

precision: Option<u8>

scale: Option<u8>

Varchar

Variable-length character string (VARCHAR)

Varbinary

Variable-length binary data (VARBINARY)

Date

Date (year, month, day)

Time

Time of day

Datetime

Date and time without timezone (TIMESTAMP WITHOUT TIME ZONE)

Timestamp

Date and time with timezone (TIMESTAMP WITH TIME ZONE)

Interval

Time interval

Array(Box<SqlType>)

Array of elements

Struct(Vec<StructField>)

Struct with named fields (ROW type in standard SQL)

Json

JSON data

Range(Box<SqlType>)

Range of values

Uuid

Universally unique identifier (UUID)

Unknown

Unknown type (for unresolved expressions)

Any

Any type (for polymorphic functions)

Implementations

impl SqlType

pub fn is_numeric(&self) -> bool

Check if this type is numeric.

pub fn is_integer(&self) -> bool

Check if this type is an integer type (signed or unsigned).

pub fn is_signed_integer(&self) -> bool

Check if this type is a signed integer type.

pub fn is_unsigned_integer(&self) -> bool

Check if this type is an unsigned integer type.

pub fn is_floating_point(&self) -> bool

Check if this type is a floating-point type.

pub fn is_string(&self) -> bool

Check if this type is a string type.

pub fn is_datetime(&self) -> bool

Check if this type is a date/time type.

pub fn is_comparable_with(&self, other: &SqlType) -> bool

Check if this type is comparable with another type.

pub fn can_coerce_to(&self, target: &SqlType) -> bool

Check if this type can be implicitly coerced to another type.

pub fn common_supertype(&self, other: &SqlType) -> Option<SqlType>

Get the common supertype of two types.

pub fn element_type(&self) -> Option<&SqlType>

Get the element type if this is an array.

pub fn struct_fields(&self) -> Option<&[StructField]>

Get struct fields if this is a struct.

Trait Implementations

impl Clone for SqlType

fn clone(&self) -> SqlType

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SqlType

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

Formats the value using the given formatter.

impl Display for SqlType

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

Formats the value using the given formatter.

impl Hash for SqlType

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 SqlType

fn eq(&self, other: &SqlType) -> 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 Eq for SqlType

impl StructuralPartialEq for SqlType