aggregation functions' argument may already has been cast to numeric (#7876)

pkg/s3select/sql/aggregation.go

@@ -103,6 +103,7 @@ func (e *FuncExpr) evalAggregationNode(r Record) error {
 
 		// Here, we diverge from Amazon S3 behavior by
 		// inferring untyped values are numbers.
+		if !argVal.isNumeric() {
 			if i, ok := argVal.bytesToInt(); ok {
 				argVal.setInt(i)
 			} else if f, ok := argVal.bytesToFloat(); ok {
@@ -111,6 +112,7 @@ func (e *FuncExpr) evalAggregationNode(r Record) error {
 				return errNonNumericArg(funcName)
 			}
 		}
+	}
 
 	// Mark that we have seen one non-null value.
 	isFirstRow := false