Update CodeFirst

Src/Asp.NetCore2/SqlSugar/Abstract/CodeFirstProvider/CodeFirstProvider.cs

@@ -393,6 +393,7 @@ namespace SqlSugar
                 if (entityInfo.IsCreateTableFiledSort)
                 {
                     columns = columns.OrderBy(c => c.CreateTableFieldSort).ToList();
+                    columns = columns.OrderBy(it => it.IsPrimarykey ? 0 : 1).ToList();
                 }
             }
             this.Context.DbMaintenance.CreateTable(tableName, columns, true);