Enum ColumnRequirement 

pub enum ColumnRequirement {
    Exists,
    Time,
    Numeric,
}

Semantic type requirement placed on a depended-upon column.

Rather than snapshotting exact connector type strings (which breaks on harmless type widenings like VARCHAR(20) -> VARCHAR(50) or INT -> BIGINT), bindings record the semantic capability the fact requires.

Variants

Exists

The column must exist in the live table, with any data type.

Time

The column must exist and possess a temporal type (date, time, timestamp).

Numeric

The column must exist and possess a numeric type (int, float, decimal, etc.).

Trait Implementations

impl Clone for ColumnRequirement

fn clone(&self) -> ColumnRequirement

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ColumnRequirement

impl Debug for ColumnRequirement

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

Formats the value using the given formatter.

impl Default for ColumnRequirement

fn default() -> ColumnRequirement

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for ColumnRequirement

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for ColumnRequirement

impl Hash for ColumnRequirement

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 ColumnRequirement

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for ColumnRequirement

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for ColumnRequirement