Enable named parameters on DB2CoreDriver (#2546)

Author: hazzik

src/NHibernate/Driver/DB2CoreDriver.cs

@@ -1,3 +1,6 @@
+using System.Data.Common;
+using NHibernate.SqlTypes;
+
 namespace NHibernate.Driver
 {
 	/// <summary>
@@ -8,5 +11,17 @@ public class DB2CoreDriver : DB2DriverBase
 		public DB2CoreDriver() : base("IBM.Data.DB2.Core")
 		{
 		}
+		
+		public override bool UseNamedPrefixInSql => true;
+
+		public override bool UseNamedPrefixInParameter => true;
+
+		public override string NamedPrefix => "@";
+
+		protected override void InitializeParameter(DbParameter dbParam, string name, SqlType sqlType)
+		{
+			dbParam.ParameterName = FormatNameForParameter(name);
+			base.InitializeParameter(dbParam, name, sqlType);
+		}
 	}
 }