Enum SqlFunction 

pub enum SqlFunction {
    Binary(SqlBinaryOp),
    IsIn {
        nulls_equal: bool,
    },
    ToFloat,
    Round {
        decimals: u32,
    },
}

A SQL operation whose semantics depend on the operand dtypes. Only the SQL frontend creates these; they are lowered to ordinary expressions during DSL→IR conversion, once the dtypes are known, so every SQL entry point gets the same result.

Variants

Binary(SqlBinaryOp)

lhs <op> rhs. A decimal literal (or a CASE of them) combined with a float takes the float’s type, as a float literal would.

IsIn

Available on crate feature is_in only.

IN: number literals tested against a float take the float’s type. Other floats tested against integers or decimals compare as floats, dates against datetimes as datetimes, and nested values of the same shape as their supertype. This only gives the membership; the SQL frontend adds the SQL null and empty set logic.

Fields

nulls_equal: bool

ToFloat

A decimal as Float64, for SQL functions without decimal implementations.

Round

Available on crate feature round_series only.

ROUND: decimals round half away from zero, as in Postgres.

Fields

decimals: u32

Trait Implementations

impl Clone for SqlFunction

fn clone(&self) -> SqlFunction

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for SqlFunction

impl Debug for SqlFunction

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for SqlFunction

fn deserialize<__D>( __deserializer: __D, ) -> Result<SqlFunction, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for SqlFunction

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

Formats the value using the given formatter.

impl Eq for SqlFunction

impl Hash for SqlFunction

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 SqlFunction

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for SqlFunction

fn serialize<__S>( &self, __serializer: __S, ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for SqlFunction