From 99d5f75419edd00cf153e35d917e5d8b0730f7ce Mon Sep 17 00:00:00 2001
From: Denis Arh <denis.arh@gmail.com>
Date: Sat, 3 Apr 2021 08:26:17 +0200
Subject: [PATCH] Ensure CastToFloat gets untyped value

---
 pkg/expr/expr_types.go | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/pkg/expr/expr_types.go b/pkg/expr/expr_types.go
index f693ac448..560465f43 100644
--- a/pkg/expr/expr_types.go
+++ b/pkg/expr/expr_types.go
@@ -339,6 +339,14 @@ func CastToDateTime(val interface{}) (out *time.Time, err error) {
 }
 
 func CastToFloat(val interface{}) (out float64, err error) {
+	val = UntypedValue(val)
+	switch val := val.(type) {
+	case nil:
+		return 0, nil
+	case *Float:
+		return val.value, nil
+	}
+
 	return cast.ToFloat64E(emptyStringFailsafe(val))
 }