Struct Invariant

pub struct Invariant {
    pub field_name: String,
    pub invariant_sql: String,
}

An invariant for a column that is enforced on all writes to a Delta table.

Fields

field_name: String

The full path to the field.

invariant_sql: String

The SQL string that must always evaluate to true.

Implementations

impl Invariant

pub fn new(field_name: &str, invariant_sql: &str) -> Self

Create a new invariant

Trait Implementations

impl Clone for Invariant

fn clone(&self) -> Invariant

Returns a copy of the value.

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

Performs copy-assignment from source.

impl DataCheck for Invariant

fn get_name(&self) -> &str

The name of the specific check

fn get_expression(&self) -> &str

The SQL expression to use for the check

impl Debug for Invariant

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

Formats the value using the given formatter.

impl Default for Invariant

fn default() -> Invariant

Returns the “default value” for a type.

impl PartialEq for Invariant

fn eq(&self, other: &Invariant) -> 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 Invariant

impl StructuralPartialEq for Invariant