Function log 

pub fn log<'a, V, E1, E2>(
    base: E1,
    value: E2,
) -> SQLExpr<'a, V, <V::DialectMarker as DialectTypes>::Double, <E1::Nullable as NullOr<E2::Nullable>>::Output, <E1::Aggregate as AggOr<E2::Aggregate>>::Output>
where
    V: SQLParam + 'a,
    E1: Expr<'a, V>,
    E1::SQLType: Numeric,
    E2: Expr<'a, V>,
    E2::SQLType: Numeric,
    E1::Nullable: NullOr<E2::Nullable>,
    E2::Nullable: Nullability,
    E1::Aggregate: AggOr<E2::Aggregate>,

LOG - returns the logarithm of a number with a specified base.

Returns a dialect-aware double type. The result is nullable if either input is nullable.

Example

use drizzle_core::expr::log;

// SELECT LOG(2, users.value)
let log_base_2 = log(2, users.value);