NClob oracle

Src/Asp.Net/SqlSugar/Entities/DefaultCustom.cs

@@ -85,4 +85,21 @@ namespace SqlSugar.DbConvert
             return (T)(object)value;
         }
     }
+
+    public class NClobPropertyConvert : ISugarDataConverter
+    {
+        public SugarParameter ParameterConverter<T>(object columnValue, int columnIndex)
+        {
+            var name = "@Common" + columnIndex;
+            Type undertype = SqlSugar.UtilMethods.GetUnderType(typeof(T));//获取没有nullable的枚举类型
+            return new SugarParameter(name, columnValue, undertype) { IsNClob = true };
+        }
+
+        public T QueryConverter<T>(IDataRecord dr, int i)
+        {
+
+            var value = dr.GetString(i);
+            return (T)(object)value;
+        }
+    }
 }

Src/Asp.Net/SqlSugar/ExpressionsToSql/Common/SugarParameter.cs

@@ -11,6 +11,7 @@ namespace SqlSugar
     {
         public bool IsRefCursor { get; set; }
         public bool IsClob { get; set; }
+        public bool IsNClob { get; set; }
         public bool IsNvarchar2 { get; set; }
         public SugarParameter(string name, object value)
         {

Src/Asp.Net/SqlSugar/Realization/Oracle/OracleProvider.cs

@@ -219,6 +219,11 @@ namespace SqlSugar
                     sqlParameter.OracleDbType = OracleDbType.Clob;
                     sqlParameter.Value = parameter.Value;
                 }
+                if (parameter.IsNClob)
+                {
+                    sqlParameter.OracleDbType = OracleDbType.NClob;
+                    sqlParameter.Value = parameter.Value;
+                }
                 if (parameter.IsArray)
                 {
                     sqlParameter.OracleDbType = OracleDbType.Varchar2;