Update core

Src/Asp.NetCore2/SqlSeverTest/SqlSugar/Infrastructure/InstanceFactory.cs

@@ -25,6 +25,14 @@ namespace SqlSugar
             {
                 return new SqlServerQueryable<T>();
             }
+            else  if (currentConnectionConfig.DbType == DbType.MySql)
+            {
+                return new MySqlQueryable<T>();
+            }
+            else if (currentConnectionConfig.DbType == DbType.PostgreSQL)
+            {
+                return new PostgreSQLQueryable<T>();
+            }
             else
             {
                 string className = "Queryable";
@@ -246,6 +254,10 @@ namespace SqlSugar
             {
                 return new SqlServerDbBind();
             }
+            else if (currentConnectionConfig.DbType == DbType.MySql)
+            {
+                return new MySqlDbBind();
+            }
             else
             {
                 IDbBind result = CreateInstance<IDbBind>(GetClassName(currentConnectionConfig.DbType.ToString(), "DbBind"));