MySql CodeFirst Sbyte

Src/Asp.Net/MySqlTest/UnitTest/UCodeFirst.cs

@@ -36,6 +36,12 @@ namespace OrmTest
                 b=it.b
             }).ToList();
             Db.CodeFirst.InitTables<UnitTest012213>();
+            Db.CodeFirst.InitTables<UnitTest3131>();
+        }
+
+        public class UnitTest3131 
+        {
+            public sbyte Id { get; set; }
         }
         public class UnitTest012213
         {

Src/Asp.Net/SqlSugar/Realization/MySql/DbBind/MySqlDbBind.cs

@@ -20,6 +20,8 @@ namespace SqlSugar
                 csharpTypeName = "long";
             if (csharpTypeName == "Boolean")
                 csharpTypeName = "bool";
+            if (csharpTypeName == "SByte")
+                csharpTypeName = "Byte";
             var mappings = this.MappingTypes.Where(it => it.Value.ToString().Equals(csharpTypeName, StringComparison.CurrentCultureIgnoreCase));
             return mappings.HasValue() ? mappings.First().Key : "varchar";
         }