Method query_get_value

src/sql.rs:551–561

Executes a query which is expected to return one row and one column. If the query does not return any rows, returns `Ok(None)`.

(
        &self,
        query: &str,
        params: impl rusqlite::Params + Send,
    )

    /// Executes a query which is expected to return one row and one
    /// column. If the query does not return any rows, returns `Ok(None)`.
    pub async fn query_get_value<T>(
        &self,
        query: &str,
        params: impl rusqlite::Params + Send,
    ) -> Result<Option<T>>
    where
        T: rusqlite::types::FromSql + Send + 'static,
    {
        self.query_row_optional(query, params, |row| row.get::<_, T>(0))
            .await
    }

    /// Set private configuration options.
    ///