add expr_fn::median (#5437)

apache · Mar 1, 2023 · eef0464 · eef0464
1 parent d076ab3
commit eef0464
Showing 1 changed file with 10 additions and 0 deletions.
diff --git a/datafusion/expr/src/expr_fn.rs b/datafusion/expr/src/expr_fn.rs
@@ -175,6 +175,16 @@ pub fn approx_distinct(expr: Expr) -> Expr {
     ))
 }
 
+/// Calculate the median for `expr`.
+pub fn median(expr: Expr) -> Expr {
+    Expr::AggregateFunction(AggregateFunction::new(
+        aggregate_function::AggregateFunction::Median,
+        vec![expr],
+        false,
+        None,
+    ))
+}
+
 /// Calculate an approximation of the median for `expr`.
 pub fn approx_median(expr: Expr) -> Expr {
     Expr::AggregateFunction(AggregateFunction::new(