Update GetTypes

Src/Asp.NetCore2/SqlSugar/Realization/Dm/DbMaintenance/DmDbMaintenance.cs

@@ -269,9 +269,12 @@ namespace SqlSugar
         #region Methods
         public override List<string> GetDbTypes()
         {
-            return this.Context.Ado.SqlQuery<string>(@"SELECT DISTINCT DATA_TYPE
+            var result = this.Context.Ado.SqlQuery<string>(@"SELECT DISTINCT DATA_TYPE
 FROM DBA_TAB_COLUMNS
 WHERE OWNER = user ");
+            result.Add("timestamp");
+            result.Add("timestamp");
+            return result.Distinct().ToList();
         }
         public override List<string> GetTriggerNames(string tableName)
         {

Src/Asp.NetCore2/SqlSugar/SqlSugarForCore.nuspec

@@ -2,7 +2,7 @@
 <package >
   <metadata>
     <id>SqlSugarCore</id>
-    <version>5.1.4.107</version>
+    <version>5.1.4.108-preview20</version>
     <authors>sunkaixuan</authors>
     <owners>果糖大数据科技</owners>
     <licenseUrl>http://www.apache.org/licenses/LICENSE-2.0.html</licenseUrl>