Method register_udaf

datafusion/core/src/execution/context/mod.rs:1641–1643

Registers an aggregate UDF within this context. Note in SQL queries, aggregate names are looked up using lowercase unless the query uses quotes. For example, - `SELECT MY_UDAF(x)...` will look for an aggregate named `"my_udaf"` - `SELECT "my_UDAF"(x)` will look for an aggregate named `"my_UDAF"`

(&self, f: AggregateUDF)

    /// - `SELECT MY_UDAF(x)...` will look for an aggregate named `"my_udaf"`
    /// - `SELECT "my_UDAF"(x)` will look for an aggregate named `"my_UDAF"`
    pub fn register_udaf(&self, f: AggregateUDF) {
        self.state.write().register_udaf(Arc::new(f)).ok();
    }

    /// Registers a window UDF within this context.
    ///