Function backend::db::function::similarity_nullable

pub fn similarity_nullable<t1, t2>(
    t1: t1,
    t2: t2
) -> similarity_nullable<<t1 as AsExpression<Nullable<Text>>>::Expression, <t2 as AsExpression<Text>>::Expression>where
    t1: AsExpression<Nullable<Text>>,
    t2: AsExpression<Text>,

The pg_trgm SQL function similarity.

Used to find how similar two strings are.

If your column is not nullable use similarity() instead.