Function sqlx_core_oldapi::query_scalar::query_scalar  
source · pub fn query_scalar<'q, DB, O>(
    sql: &'q str
) -> QueryScalar<'q, DB, O, <DB as HasArguments<'q>>::Arguments>where
    DB: Database,
    (O,): for<'r> FromRow<'r, DB::Row>,Expand description
Make a SQL query that is mapped to a single concrete type
using FromRow.