Enum Conflict 

pub enum Conflict<'a> {
    DoNothing {
        target: Option<ConflictTarget<'a>>,
    },
    DoUpdate {
        target: ConflictTarget<'a>,
        set: SQL<'a, PostgresValue<'a>>,
        where_clause: Option<SQL<'a, PostgresValue<'a>>>,
    },
}

Conflict resolution strategies for PostgreSQL

Variants

DoNothing

Do nothing on conflict - ON CONFLICT DO NOTHING or ON CONFLICT (target) DO NOTHING

Fields

target: Option<ConflictTarget<'a>>

Optional target specification. If None, matches any conflict

DoUpdate

Update on conflict - ON CONFLICT (target) DO UPDATE SET …

Fields

target: ConflictTarget<'a>

Required target specification for DO UPDATE

set: SQL<'a, PostgresValue<'a>>

SET clause assignments (can use EXCLUDED.column to reference proposed values)

where_clause: Option<SQL<'a, PostgresValue<'a>>>

Optional WHERE clause for conditional updates Applied after SET: DO UPDATE SET … WHERE condition

Implementations

impl<'a> Conflict<'a>

pub fn do_nothing_on_columns<T>(columns: T) -> Self

where T: ToSQL<'a, PostgresValue<'a>>,

Create a DO NOTHING conflict resolution with specific columns

pub fn do_nothing_on_constraint(constraint_name: String) -> Self

Create a DO NOTHING conflict resolution with a constraint name

pub fn do_update<S, W>( target: ConflictTarget<'a>, set: S, where_clause: Option<W>, ) -> Self

where S: ToSQL<'a, PostgresValue<'a>>, W: ToSQL<'a, PostgresValue<'a>>,

Create a DO UPDATE conflict resolution

Trait Implementations

impl<'a> Clone for Conflict<'a>

fn clone(&self) -> Conflict<'a>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Debug for Conflict<'a>

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

Formats the value using the given formatter.

impl<'a> Default for Conflict<'a>

fn default() -> Self

Returns the “default value” for a type.