backend::db::function

Function similarity_nullable

Source 
pub fn similarity_nullable<t1, t2>(
    t1: t1,
    t2: t2,
) -> similarity_nullable<t1, t2>
where
    t1: AsExpression<Nullable<Text>>,
    t2: AsExpression<Text>,
Expand description

The pg_trgm SQL function similarity.

Used to find how similar two strings are.

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