修复[issue:2339](https://github.com/dataease/dataease/issues/2339)excel创建关联数据集保留原数据类型

backend/src/main/java/io/dataease/provider/engine/mysql/MysqlQueryProvider.java

@@ -62,6 +62,7 @@ public class MysqlQueryProvider extends QueryProvider {
             case "MEDIUMINT":
             case "INTEGER":
             case "BIGINT":
+            case "LONG":
                 return 2;// 整型
             case "FLOAT":
             case "DOUBLE":

backend/src/main/java/io/dataease/provider/query/mysql/MysqlQueryProvider.java

@@ -63,6 +63,7 @@ public class MysqlQueryProvider extends QueryProvider {
             case "MEDIUMINT":
             case "INTEGER":
             case "BIGINT":
+            case "LONG":
                 return 2;// 整型
             case "FLOAT":
             case "DOUBLE":

backend/src/main/java/io/dataease/service/dataset/DataSetTableService.java

@@ -1614,6 +1614,7 @@ public class DataSetTableService {
                                 TableUtils.fieldName(field.getTableId() + "_" + field.getDataeaseName()),
                                 tableField.getFieldName())) {
                             tableField.setRemarks(field.getName());
+                            tableField.setFieldType(field.getType());
                             break;
                         }
                     }