typo

Author: alamb

datafusion/expr/src/udaf.rs

@@ -728,7 +728,7 @@ pub trait AggregateUDFImpl: Debug + DynEq + DynHash + Send + Sync {
     /// While this rewrite may seem worse (slower) than the original as it
     /// computes *more* aggregate expressions, the common subexpression
     /// elimination (CSE) can then reduce the number of distinct aggregates the
-    /// query actually needs to compute witha rewrite like
+    /// query actually needs to compute with a rewrite like
     ///
     /// * `Projection(_A + 1*_B, _A + 2*_B)`
     /// * `  Aggregate(_A = SUM(x), _B = COUNT(x))`