Type Alias PbDefaultColumnDesc

pub type PbDefaultColumnDesc = DefaultColumnDesc;

Alias for DefaultColumnDesc.

Aliased Type

struct PbDefaultColumnDesc {
    pub expr: Option<ExprNode>,
    pub snapshot_value: Option<Datum>,
}

Fields

expr: Option<ExprNode>

Expression of the DEFAULT. Used when inserting new records.

snapshot_value: Option<Datum>

Evaluated value of the expression at the time of the table creation or the column addition. Used when filling the default value for the records where the column is missing.