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variance

drizzle_core::expr

Function variance 

Source 
pub fn variance<'a, V, E>(
    expr: E,
) -> SQLExpr<'a, V, <E::SQLType as StatisticalAggregatePolicy<V::DialectMarker>>::VarSamp, Null, Agg>
where
    V: SQLParam + 'a,
    E: Expr<'a, V>,
    E::SQLType: StatisticalAggregatePolicy<V::DialectMarker>,
Expand description

Sample variance. Emits VARIANCE on PostgreSQL and VAR_SAMP on MySQL.