【功能优化】 产品发布创建超级表优化

yudao-module-iot/yudao-module-iot-api/src/main/java/cn/iocoder/yudao/module/iot/domain/FieldsVo.java

@@ -1,14 +1,18 @@
 package cn.iocoder.yudao.module.iot.domain;
 
+import lombok.Builder;
 import lombok.Data;
 
 import java.sql.SQLException;
 import java.util.ArrayList;
 import java.util.List;
 
+/**
+ * 字段信息 VO
+ */
 @Data
+@Builder
 public class FieldsVo {
-    private static final long serialVersionUID = 1L;
 
     /**
      * 字段名称
@@ -24,24 +28,4 @@ public class FieldsVo {
      * 字段字节大小
      */
     private Integer size;
-
-    public static FieldsVo fieldsTranscoding(Fields fields) throws SQLException {
-//        if (StringUtils.isBlank(fields.getFieldName()) || fields.getDataType() == null) {
-//            throw new SQLException("invalid operation: fieldName or dataType can not be null");
-//        }
-//        FieldsVo fieldsVo = new FieldsVo();
-//        fieldsVo.setFieldName(fields.getFieldName());
-//        fieldsVo.setDataType(fields.getDataType().getDataType());
-//        fieldsVo.setSize(fields.getSize());
-//        return fieldsVo;
-        return null;
-    }
-
-    public static List<FieldsVo> fieldsTranscoding(List<Fields> fieldsList) throws SQLException {
-        List<FieldsVo> fieldsVoList = new ArrayList<>();
-        for (Fields fields : fieldsList) {
-            fieldsVoList.add(fieldsTranscoding(fields));
-        }
-        return fieldsVoList;
-    }
 }

yudao-module-iot/yudao-module-iot-biz/src/main/java/cn/iocoder/yudao/module/iot/dal/dataobject/tdengine/FieldParser.java

@@ -10,7 +10,6 @@ import java.util.stream.Collectors;
 
 /**
  * FieldParser 类用于解析和转换物模型字段到 TDengine 字段
- * 
  */
 public class FieldParser {
 
@@ -35,49 +34,58 @@ public class FieldParser {
      * @param property 物模型属性
      * @return TdField对象
      */
-    public static TdField parse(ThingModelProperty property) {
+    public static TdFieldDO parse(ThingModelProperty property) {
         String fieldName = property.getIdentifier().toLowerCase();
         ThingModelDataType type = property.getDataType();
 
         // 将物模型字段类型映射为td字段类型
         String fType = TYPE_MAPPING.get(type.getType().toUpperCase());
 
-        int len = -1;
         // 如果字段类型为NCHAR，默认长度为64
+        int dataLength = 0;
         if ("NCHAR".equals(fType)) {
-            len = 64;
+            dataLength = 64;
         }
-
+        return new TdFieldDO(fieldName, fType, dataLength);
-        return new TdField(fieldName, fType, len);
     }
 
     /**
-     * 获取物模型中的字段列表
+     * 从物模型中获取字段列表
+     *
+     * @param thingModel 物模型响应对象
+     * @return 字段列表
      */
-    public static List<TdField> parse(ThingModelRespVO thingModel) {
+    public static List<TdFieldDO> parse(ThingModelRespVO thingModel) {
-        return thingModel.getModel().getProperties().stream().map(FieldParser::parse).collect(Collectors.toList());
+        return thingModel.getModel().getProperties().stream()
+                .map(FieldParser::parse)
+                .collect(Collectors.toList());
     }
 
     /**
-     * 将从库中查出来的字段信息转换为td字段对象
+     * 将从库中查出来的字段信息转换为 TDengine 字段对象
+     *
+     * @param rows 从库中查出的字段信息列表
+     * @return 转换后的 TDengine 字段对象列表
      */
-    public static List<TdField> parse(List<List<Object>> rows) {
+    public static List<TdFieldDO> parse(List<List<Object>> rows) {
         return rows.stream().map(row -> {
             String type = row.get(1).toString().toUpperCase();
-            return new TdField(
+            int dataLength = "NCHAR".equals(type) ? Integer.parseInt(row.get(2).toString()) : -1;
+            return new TdFieldDO(
                     row.get(0).toString(),
                     type,
-                    type.equals("NCHAR") ? Integer.parseInt(row.get(2).toString()) : -1);
+                    dataLength
+            );
         }).collect(Collectors.toList());
     }
 
     /**
      * 获取字段字义
      */
-    public static String getFieldDefine(TdField field) {
+    public static String getFieldDefine(TdFieldDO field) {
-        return "`" + field.getName() + "`" + " "
+        return "`" + field.getFieldName() + "`" + " "
-                + (field.getLength() > 0 ? String.format("%s(%d)", field.getType(), field.getLength())
+                + (field.getDataLength() > 0 ? String.format("%s(%d)", field.getDataType(), field.getDataLength())
-                        : field.getType());
+                : field.getDataType());
     }
 
 }

yudao-module-iot/yudao-module-iot-biz/src/main/java/cn/iocoder/yudao/module/iot/dal/dataobject/tdengine/TableManager.java

@@ -45,7 +45,7 @@ public class TableManager {
     /**
      * 获取创建表sql
      */
-    public static String getCreateSTableSql(String tbName, List<TdField> fields, TdField... tags) {
+    public static String getCreateSTableSql(String tbName, List<TdFieldDO> fields, TdFieldDO... tags) {
         if (fields.isEmpty()) {
             return null;
         }
@@ -53,7 +53,7 @@ public class TableManager {
         // 生成字段片段
         StringBuilder sbField = new StringBuilder("time TIMESTAMP,");
 
-        for (TdField field : fields) {
+        for (TdFieldDO field : fields) {
             sbField.append(FieldParser.getFieldDefine(field));
             sbField.append(",");
         }
@@ -63,7 +63,7 @@ public class TableManager {
 
         // 生成tag
         StringBuilder sbTag = new StringBuilder();
-        for (TdField tag : tags) {
+        for (TdFieldDO tag : tags) {
             sbTag.append(FieldParser.getFieldDefine(tag))
                     .append(",");
         }
@@ -76,7 +76,7 @@ public class TableManager {
     /**
      * 获取创建普通表sql
      */
-    public static String getCreateCTableSql(String tbName, List<TdField> fields) {
+    public static String getCreateCTableSql(String tbName, List<TdFieldDO> fields) {
         if (fields.size() == 0) {
             return null;
         }
@@ -84,7 +84,7 @@ public class TableManager {
         //生成字段片段
         StringBuilder sbField = new StringBuilder("time timestamp,");
 
-        for (TdField field : fields) {
+        for (TdFieldDO field : fields) {
             sbField.append(FieldParser.getFieldDefine(field));
             sbField.append(",");
         }
@@ -116,9 +116,9 @@ public class TableManager {
     /**
      * 获取添加字段sql
      */
-    public static String getAddSTableColumnSql(String tbName, List<TdField> fields) {
+    public static String getAddSTableColumnSql(String tbName, List<TdFieldDO> fields) {
         StringBuilder sbAdd = new StringBuilder();
-        for (TdField field : fields) {
+        for (TdFieldDO field : fields) {
             sbAdd.append(String.format(ALTER_STABLE_ADD_COL_TPL,
                     tbName,
                     FieldParser.getFieldDefine(field)
@@ -130,9 +130,9 @@ public class TableManager {
     /**
      * 获取修改字段sql
      */
-    public static String getModifySTableColumnSql(String tbName, List<TdField> fields) {
+    public static String getModifySTableColumnSql(String tbName, List<TdFieldDO> fields) {
         StringBuilder sbModify = new StringBuilder();
-        for (TdField field : fields) {
+        for (TdFieldDO field : fields) {
             sbModify.append(String.format(ALTER_STABLE_MODIFY_COL_TPL,
                     tbName,
                     FieldParser.getFieldDefine(field)
@@ -144,12 +144,12 @@ public class TableManager {
     /**
      * 获取删除字段sql
      */
-    public static String getDropSTableColumnSql(String tbName, List<TdField> fields) {
+    public static String getDropSTableColumnSql(String tbName, List<TdFieldDO> fields) {
         StringBuilder sbDrop = new StringBuilder();
-        for (TdField field : fields) {
+        for (TdFieldDO field : fields) {
             sbDrop.append(String.format(ALTER_STABLE_DROP_COL_TPL,
                     tbName,
-                    field.getName()
+                    field.getFieldName()
             ));
         }
         return sbDrop.toString();

yudao-module-iot/yudao-module-iot-biz/src/main/java/cn/iocoder/yudao/module/iot/dal/dataobject/tdengine/TdFieldDO.java

@@ -1,6 +1,7 @@
 package cn.iocoder.yudao.module.iot.dal.dataobject.tdengine;
 
 import lombok.AllArgsConstructor;
+import lombok.Builder;
 import lombok.Data;
 import lombok.NoArgsConstructor;
 
@@ -10,20 +11,21 @@ import lombok.NoArgsConstructor;
 @Data
 @NoArgsConstructor
 @AllArgsConstructor
-public class TdField {
+@Builder
+public class TdFieldDO {
 
     /**
      * 字段名称
      */
-    private String name;
+    private String fieldName;
 
     /**
      * 字段类型
      */
-    private String type;
+    private String dataType;
 
     /**
      * 字段长度
      */
-    private int length;
+    private Integer dataLength = 0;
 }

yudao-module-iot/yudao-module-iot-biz/src/main/java/cn/iocoder/yudao/module/iot/dal/dataobject/tdengine/TdResponse.java

@@ -17,13 +17,25 @@ public class TdResponse {
     public static final int CODE_SUCCESS = 0;
     public static final int CODE_TB_NOT_EXIST = 866;
 
+    /**
+     * 状态
+     */
     private String status;
 
+    /**
+     * 错误码
+     */
     private int code;
 
+    /**
+     * 错误信息
+     */
     private String desc;
 
-    //[["time","TIMESTAMP",8,""],["powerstate","TINYINT",1,""],["brightness","INT",4,""],["deviceid","NCHAR",32,"TAG"]]
+    /**
-    private List<Object[]> data;
+     * 列信息
+     * [["time","TIMESTAMP",8,""],["powerstate","TINYINT",1,""],["brightness","INT",4,""],["deviceid","NCHAR",32,"TAG"]]
+     */
+    private List data;
 
 }

yudao-module-iot/yudao-module-iot-biz/src/main/java/cn/iocoder/yudao/module/iot/dal/dataobject/tdengine/TdRestApi.java

@@ -14,22 +14,22 @@ import org.springframework.stereotype.Service;
 @Service
 public class TdRestApi {
 
-    @Value("${spring.datasource.dynamic.datasource.master.url}")
+    @Value("${spring.datasource.dynamic.datasource.tdengine.url}")
     private String url;
 
-    @Value("${spring.datasource.dynamic.datasource.master.username}")
+    @Value("${spring.datasource.dynamic.datasource.tdengine.username}")
     private String username;
 
-    @Value("${spring.datasource.dynamic.datasource.master.password}")
+    @Value("${spring.datasource.dynamic.datasource.tdengine.password}")
     private String password;
 
+    /**
+     * 获取 REST API URL
+     */
     private String getRestApiUrl() {
-        //jdbc:TAOS-RS://127.0.0.1:6041/iotkit?xxxx
         String restUrl = url.replace("jdbc:TAOS-RS://", "")
                 .replaceAll("\\?.*", "");
-        // /rest/sql/iotkit
         int idx = restUrl.lastIndexOf("/");
-        //127.0.0.1:6041/rest/sql/iotkit
         return String.format("%s/rest/sql/%s", restUrl.substring(0, idx), restUrl.substring(idx + 1));
     }
 
@@ -54,5 +54,4 @@ public class TdRestApi {
         return JSONUtil.toBean(response.body(), TdResponse.class);
     }
 
-
 }

yudao-module-iot/yudao-module-iot-biz/src/main/java/cn/iocoder/yudao/module/iot/dal/tdengine/TdEngineMapper.java

@@ -1,5 +1,6 @@
 package cn.iocoder.yudao.module.iot.dal.tdengine;
 
+import cn.iocoder.yudao.module.iot.dal.dataobject.tdengine.TdFieldDO;
 import cn.iocoder.yudao.module.iot.domain.FieldsVo;
 import cn.iocoder.yudao.module.iot.domain.SelectDto;
 import cn.iocoder.yudao.module.iot.domain.TableDto;
@@ -17,24 +18,80 @@ import java.util.Map;
 @DS("tdengine")
 public interface TdEngineMapper {
 
+    /**
+     * 创建数据库
+     *
+     * @param dataBaseName 数据库名称
+     */
+    @InterceptorIgnore(tenantLine = "true")
     void createDatabase(@Param("dataBaseName") String dataBaseName);
 
-    void createSuperTable(@Param("schemaFields") List<FieldsVo> schemaFields,
+    /**
-                          @Param("tagsFields") List<FieldsVo> tagsFields,
+     * 创建超级表
+     *
+     * @param schemaFields   schema字段
+     * @param tagsFields     tags字段
+     * @param dataBaseName   数据库名称
+     * @param superTableName 超级表名称
+     */
+    @InterceptorIgnore(tenantLine = "true")
+    void createSuperTable(@Param("schemaFields") List<TdFieldDO> schemaFields,
+                          @Param("tagsFields") List<TdFieldDO> tagsFields,
                           @Param("dataBaseName") String dataBaseName,
                           @Param("superTableName") String superTableName);
 
+    /**
+     * 查看超级表 - 显示当前数据库下的所有超级表信息
+     * SQL：SHOW STABLES [LIKE tb_name_wildcard];
+     *
+     * @param dataBaseName   数据库名称
+     * @param superTableName 超级表名称
+     */
+    @InterceptorIgnore(tenantLine = "true")
+    List<Map<String, Object>> showSuperTables(@Param("dataBaseName") String dataBaseName,
+                                              @Param("superTableName") String superTableName);
+
+    /**
+     * 查看超级表 - 获取超级表的结构信息
+     * SQL：DESCRIBE [db_name.]stb_name;
+     * <p>
+     * * @param dataBaseName 数据库名称
+     * * @param superTableName 超级表名称
+     */
+    @InterceptorIgnore(tenantLine = "true")
+    List<Map<String, Object>> describeSuperTable(@Param("dataBaseName") String dataBaseName,
+                                                 @Param("superTableName") String superTableName);
+
+    /**
+     * 为超级表添加列
+     *
+     * @param dataBaseName   数据库名称
+     * @param superTableName 超级表名称
+     * @param field          字段信息
+     */
+    @InterceptorIgnore(tenantLine = "true")
+    void addColumnForSuperTable(@Param("dataBaseName") String dataBaseName,
+                                @Param("superTableName") String superTableName,
+                                @Param("field") TdFieldDO field);
+
+    /**
+     * 为超级表删除列
+     *
+     * @param dataBaseName   数据库名称
+     * @param superTableName 超级表名称
+     * @param field          字段信息
+     */
+    @InterceptorIgnore(tenantLine = "true")
+    void dropColumnForSuperTable(@Param("dataBaseName") String dataBaseName,
+                                 @Param("superTableName") String superTableName,
+                                 @Param("field") TdFieldDO field);
+
     void createTable(TableDto tableDto);
 
     void insertData(TableDto tableDto);
 
     List<Map<String, Object>> selectByTimestamp(SelectDto selectDto);
 
-    void addColumnForSuperTable(@Param("superTableName") String superTableName,
-                                @Param("fieldsVo") FieldsVo fieldsVo);
-
-    void dropColumnForSuperTable(@Param("superTableName") String superTableName,
-                                 @Param("fieldsVo") FieldsVo fieldsVo);
 
     void addTagForSuperTable(@Param("superTableName") String superTableName,
                              @Param("fieldsVo") FieldsVo fieldsVo);
@@ -44,14 +101,6 @@ public interface TdEngineMapper {
 
     Map<String, Long> getCountByTimestamp(SelectDto selectDto);
 
-    /**
-     * 检查表是否存在
-     *
-     * @param dataBaseName 数据库名称
-     * @param tableName    表名称
-     */
-    Integer checkTableExists(@Param("dataBaseName") String dataBaseName, @Param("tableName") String tableName);
-
     Map<String, Object> getLastData(SelectDto selectDto);
 
     List<Map<String, Object>> getHistoryData(SelectVisualDto selectVisualDto);
@@ -62,13 +111,5 @@ public interface TdEngineMapper {
 
     List<Map<String, Object>> getLastDataByTags(TagsSelectDao tagsSelectDao);
 
-    /**
-     * 创建超级表
-     *
-     * @param sql sql
-     * @return 返回值
-     */
-    @InterceptorIgnore(tenantLine = "true")
-    Integer createSuperTableDevice(String sql);
 
 }

yudao-module-iot/yudao-module-iot-biz/src/main/java/cn/iocoder/yudao/module/iot/service/tdengine/IotDbStructureDataServiceImpl.java

@@ -1,19 +1,22 @@
 package cn.iocoder.yudao.module.iot.service.tdengine;
 
-import cn.hutool.json.JSONUtil;
+import cn.hutool.core.collection.CollUtil;
 import cn.iocoder.yudao.module.iot.controller.admin.thinkmodelfunction.thingModel.ThingModelProperty;
 import cn.iocoder.yudao.module.iot.controller.admin.thinkmodelfunction.thingModel.ThingModelRespVO;
 import cn.iocoder.yudao.module.iot.dal.dataobject.product.IotProductDO;
-import cn.iocoder.yudao.module.iot.dal.dataobject.tdengine.*;
+import cn.iocoder.yudao.module.iot.dal.dataobject.tdengine.FieldParser;
+import cn.iocoder.yudao.module.iot.dal.dataobject.tdengine.TdFieldDO;
+import cn.iocoder.yudao.module.iot.dal.dataobject.tdengine.TdRestApi;
 import cn.iocoder.yudao.module.iot.dal.dataobject.thinkmodelfunction.IotThinkModelFunctionDO;
-import cn.iocoder.yudao.module.iot.dal.tdengine.TdEngineMapper;
 import cn.iocoder.yudao.module.iot.enums.product.IotProductFunctionTypeEnum;
 import jakarta.annotation.Resource;
 import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Value;
 import org.springframework.stereotype.Service;
 
 import java.util.ArrayList;
 import java.util.List;
+import java.util.Map;
 import java.util.Objects;
 import java.util.stream.Collectors;
 
@@ -22,147 +25,206 @@ import java.util.stream.Collectors;
 public class IotDbStructureDataServiceImpl implements IotDbStructureDataService {
 
     @Resource
-    private TdEngineMapper tdEngineMapper;
+    private TdEngineService tdEngineService;
 
     @Resource
     private TdRestApi tdRestApi;
 
+    @Value("${spring.datasource.dynamic.datasource.tdengine.url}")
+    private String url;
+
     @Override
     public void createSuperTable(ThingModelRespVO thingModel, Integer deviceType) {
-        // 获取物模型中的属性定义
+        // 1. 解析物模型，获得字段列表
-        List<TdField> fields = FieldParser.parse(thingModel);
+        List<TdFieldDO> schemaFields = new ArrayList<>();
-        String tbName = getProductPropertySTableName(deviceType, thingModel.getProductKey());
+        schemaFields.add(TdFieldDO.builder().
+                fieldName("time").
+                dataType("TIMESTAMP").
+                build());
+        schemaFields.addAll(FieldParser.parse(thingModel));
 
-        // 生成创建超级表的 SQL
+        // 3. 设置超级表的标签
-        String sql = TableManager.getCreateSTableSql(tbName, fields, new TdField("device_id", "NCHAR", 64));
+        List<TdFieldDO> tagsFields = new ArrayList<>();
-        if (sql == null) {
+        tagsFields.add(TdFieldDO.builder().
-            log.warn("生成的 SQL 为空，无法创建超级表");
+                fieldName("product_key").
-            return;
+                dataType("NCHAR").
-        }
+                dataLength(64).
-        log.info("执行 SQL: {}", sql);
+                build());
+        tagsFields.add(TdFieldDO.builder().
+                fieldName("device_key").
+                dataType("NCHAR").
+                dataLength(64).
+                build());
+        tagsFields.add(TdFieldDO.builder().
+                fieldName("device_name").
+                dataType("NCHAR").
+                dataLength(64).
+                build());
+        // 年
+        tagsFields.add(TdFieldDO.builder().
+                fieldName("year").
+                dataType("INT").
+                build());
+        // 月
+        tagsFields.add(TdFieldDO.builder().
+                fieldName("month").
+                dataType("INT").
+                build());
+        // 日
+        tagsFields.add(TdFieldDO.builder().
+                fieldName("day").
+                dataType("INT").
+                build());
+        // 时
+        tagsFields.add(TdFieldDO.builder().
+                fieldName("hour").
+                dataType("INT").
+                build());
 
-        // 执行 SQL 创建超级表
+
-        tdEngineMapper.createSuperTableDevice(sql);
+        // 4. 获取超级表的名称
+        String superTableName = getProductPropertySTableName(deviceType, thingModel.getProductKey());
+
+        // 5. 创建超级表
+        String dataBaseName = url.substring(url.lastIndexOf("/") + 1);
+        tdEngineService.createSuperTable(schemaFields, tagsFields, dataBaseName, superTableName);
     }
 
     @Override
     public void updateSuperTable(ThingModelRespVO thingModel, Integer deviceType) {
         try {
-            // 获取旧字段信息
             String tbName = getProductPropertySTableName(deviceType, thingModel.getProductKey());
-            String sql = TableManager.getDescTableSql(tbName);
+            List<TdFieldDO> oldFields = getTableFields(tbName);
-            TdResponse response = tdRestApi.execSql(sql);
+            List<TdFieldDO> newFields = FieldParser.parse(thingModel);
-            if (response.getCode() != TdResponse.CODE_SUCCESS) {
-                throw new RuntimeException("获取表描述错误: " + JSONUtil.toJsonStr(response));
-            }
 
-            List<TdField> oldFields = FieldParser.parse(response.getData());
+            updateTableFields(tbName, oldFields, newFields);
-            List<TdField> newFields = FieldParser.parse(thingModel);
-
-            // 找出新增的字段
-            List<TdField> addFields = newFields.stream()
-                    .filter(f -> oldFields.stream().noneMatch(old -> old.getName().equals(f.getName())))
-                    .collect(Collectors.toList());
-            if (!addFields.isEmpty()) {
-                sql = TableManager.getAddSTableColumnSql(tbName, addFields);
-                response = tdRestApi.execSql(sql);
-                if (response.getCode() != TdResponse.CODE_SUCCESS) {
-                    throw new RuntimeException("添加表字段错误: " + JSONUtil.toJsonStr(response));
-                }
-            }
-
-            // 找出修改的字段
-            List<TdField> modifyFields = newFields.stream()
-                    .filter(f -> oldFields.stream().anyMatch(old ->
-                            old.getName().equals(f.getName()) &&
-                                    (!old.getType().equals(f.getType()) || old.getLength() != f.getLength())))
-                    .collect(Collectors.toList());
-            if (!modifyFields.isEmpty()) {
-                sql = TableManager.getModifySTableColumnSql(tbName, modifyFields);
-                response = tdRestApi.execSql(sql);
-                if (response.getCode() != TdResponse.CODE_SUCCESS) {
-                    throw new RuntimeException("修改表字段错误: " + JSONUtil.toJsonStr(response));
-                }
-            }
-
-            // 找出删除的字段
-            List<TdField> dropFields = oldFields.stream()
-                    .filter(f -> !"time".equals(f.getName()) && !"device_id".equals(f.getName()) &&
-                            newFields.stream().noneMatch(n -> n.getName().equals(f.getName())))
-                    .collect(Collectors.toList());
-            if (!dropFields.isEmpty()) {
-                sql = TableManager.getDropSTableColumnSql(tbName, dropFields);
-                response = tdRestApi.execSql(sql);
-                if (response.getCode() != TdResponse.CODE_SUCCESS) {
-                    throw new RuntimeException("删除表字段错误: " + JSONUtil.toJsonStr(response));
-                }
-            }
         } catch (Throwable e) {
             log.error("更新物模型超级表失败", e);
         }
     }
 
+    // 获取表字段
+    private List<TdFieldDO> getTableFields(String tableName) {
+        List<TdFieldDO> fields = new ArrayList<>();
+        // 获取超级表的描述信息
+        List<Map<String, Object>> maps = tdEngineService.describeSuperTable(url.substring(url.lastIndexOf("/") + 1), tableName);
+        if (maps != null) {
+            // 过滤掉 note 字段为 TAG 的记录
+            maps = maps.stream().filter(map -> !"TAG".equals(map.get("note"))).toList();
+            // 过滤掉 time 字段
+            maps = maps.stream().filter(map -> !"time".equals(map.get("field"))).toList();
+            // 解析字段信息
+            fields = FieldParser.parse(maps.stream()
+                    .map(map -> List.of(map.get("field"), map.get("type"), map.get("length")))
+                    .collect(Collectors.toList()));
+        }
+        return fields;
+    }
+
+    // 更新表字段
+    private void updateTableFields(String tableName, List<TdFieldDO> oldFields, List<TdFieldDO> newFields) {
+        // 获取新增字段
+        List<TdFieldDO> addFields = getAddFields(oldFields, newFields);
+        // 获取修改字段
+        List<TdFieldDO> modifyFields = getModifyFields(oldFields, newFields);
+        // 获取删除字段
+        List<TdFieldDO> dropFields = getDropFields(oldFields, newFields);
+
+        String dataBaseName = url.substring(url.lastIndexOf("/") + 1);
+        // 添加新增字段
+        if (CollUtil.isNotEmpty(addFields)) {
+            tdEngineService.addColumnForSuperTable(dataBaseName,tableName, addFields);
+        }
+        // 删除旧字段
+        if (CollUtil.isNotEmpty(dropFields)) {
+            tdEngineService.dropColumnForSuperTable(dataBaseName,tableName, dropFields);
+        }
+        // 修改字段（先删除再添加）
+        if (CollUtil.isNotEmpty(modifyFields)) {
+            tdEngineService.dropColumnForSuperTable(dataBaseName,tableName, modifyFields);
+            tdEngineService.addColumnForSuperTable(dataBaseName,tableName, modifyFields);
+        }
+    }
+
+    // 获取新增字段
+    private List<TdFieldDO> getAddFields(List<TdFieldDO> oldFields, List<TdFieldDO> newFields) {
+        return newFields.stream()
+                .filter(f -> oldFields.stream().noneMatch(old -> old.getFieldName().equals(f.getFieldName())))
+                .collect(Collectors.toList());
+    }
+
+    // 获取修改字段
+    private List<TdFieldDO> getModifyFields(List<TdFieldDO> oldFields, List<TdFieldDO> newFields) {
+        return newFields.stream()
+                .filter(f -> oldFields.stream().anyMatch(old ->
+                        old.getFieldName().equals(f.getFieldName()) &&
+                                (!old.getDataType().equals(f.getDataType()) || !Objects.equals(old.getDataLength(), f.getDataLength()))))
+                .collect(Collectors.toList());
+    }
+
+    // 获取删除字段
+    private List<TdFieldDO> getDropFields(List<TdFieldDO> oldFields, List<TdFieldDO> newFields) {
+        return oldFields.stream()
+                .filter(f -> !"time".equals(f.getFieldName()) && !"device_id".equals(f.getFieldName()) &&
+                        newFields.stream().noneMatch(n -> n.getFieldName().equals(f.getFieldName())))
+                .collect(Collectors.toList());
+    }
+
     @Override
     public void createSuperTableDataModel(IotProductDO product, List<IotThinkModelFunctionDO> functionList) {
-        // 1. 生成 ThingModelRespVO
+        ThingModelRespVO thingModel = buildThingModel(product, functionList);
+
+        if (thingModel.getModel().getProperties().isEmpty()) {
+            log.warn("物模型属性列表为空，不创建超级表");
+            return;
+        }
+
+        String superTableName = getProductPropertySTableName(product.getDeviceType(), product.getProductKey());
+        String dataBaseName = url.substring(url.lastIndexOf("/") + 1);
+        Integer tableExists = tdEngineService.checkSuperTableExists(dataBaseName, superTableName);
+
+        if (tableExists != null && tableExists > 0) {
+            updateSuperTable(thingModel, product.getDeviceType());
+        } else {
+            createSuperTable(thingModel, product.getDeviceType());
+        }
+    }
+
+    private ThingModelRespVO buildThingModel(IotProductDO product, List<IotThinkModelFunctionDO> functionList) {
         ThingModelRespVO thingModel = new ThingModelRespVO();
         thingModel.setId(product.getId());
         thingModel.setProductKey(product.getProductKey());
 
-        // 1.1 设置属性、服务和事件
         ThingModelRespVO.Model model = new ThingModelRespVO.Model();
-        List<ThingModelProperty> properties = new ArrayList<>();
+        List<ThingModelProperty> properties = functionList.stream()
+                .filter(function -> IotProductFunctionTypeEnum.PROPERTY.equals(IotProductFunctionTypeEnum.valueOf(function.getType())))
+                .map(this::buildThingModelProperty)
+                .collect(Collectors.toList());
 
-        // 1.2 遍历功能列表并分类
+        model.setProperties(properties);
-        for (IotThinkModelFunctionDO function : functionList) {
+        thingModel.setModel(model);
-            if (Objects.requireNonNull(IotProductFunctionTypeEnum.valueOf(function.getType())) == IotProductFunctionTypeEnum.PROPERTY) {
+
+        return thingModel;
+    }
+
+    private ThingModelProperty buildThingModelProperty(IotThinkModelFunctionDO function) {
         ThingModelProperty property = new ThingModelProperty();
         property.setIdentifier(function.getIdentifier());
         property.setName(function.getName());
         property.setDescription(function.getDescription());
         property.setDataType(function.getProperty().getDataType());
-                properties.add(property);
+        return property;
-            }
     }
 
-        // 1.3 判断属性列表是否为空
-        if (properties.isEmpty()) {
-            log.warn("物模型属性列表为空，不创建超级表");
-            return;
-        }
-
-        model.setProperties(properties);
-        thingModel.setModel(model);
-
-        // 2. 判断是否已经创建,如果已经创建则进行更新
-        String tbName = getProductPropertySTableName(product.getDeviceType(), product.getProductKey());
-        Integer iot = tdEngineMapper.checkTableExists("ruoyi_vue_pro", tbName);
-        if (iot != null && iot > 0) {
-            // 3. 更新
-            updateSuperTable(thingModel, product.getDeviceType());
-        } else {
-            // 4. 创建
-            createSuperTable(thingModel, product.getDeviceType());
-        }
-    }
-
-    /**
-     * 根据产品key获取产品属性超级表名
-     */
     static String getProductPropertySTableName(Integer deviceType, String productKey) {
-        if (deviceType == 1) {
+        return switch (deviceType) {
-            return String.format("gateway_sub_" + productKey).toLowerCase();
+            case 1 -> String.format("gateway_sub_%s", productKey).toLowerCase();
-        } else if (deviceType == 2) {
+            case 2 -> String.format("gateway_%s", productKey).toLowerCase();
-            return String.format("gateway_" + productKey).toLowerCase();
+            default -> String.format("device_%s", productKey).toLowerCase();
-        } else {
+        };
-            return String.format("device_" + productKey).toLowerCase();
-        }
     }
 
-    /**
-     * 根据deviceId获取设备属性表名
-     */
     static String getDevicePropertyTableName(String deviceType, String productKey, String deviceKey) {
-        return String.format(deviceType + "_" + productKey + "_" + deviceKey).toLowerCase();
+        return String.format("%s_%s_%s", deviceType, productKey, deviceKey).toLowerCase();
     }
 }

yudao-module-iot/yudao-module-iot-biz/src/main/java/cn/iocoder/yudao/module/iot/service/tdengine/TdEngineService.java

@@ -1,6 +1,6 @@
 package cn.iocoder.yudao.module.iot.service.tdengine;
 
-import cn.iocoder.yudao.module.iot.domain.FieldsVo;
+import cn.iocoder.yudao.module.iot.dal.dataobject.tdengine.TdFieldDO;
 import cn.iocoder.yudao.module.iot.domain.SelectDto;
 import cn.iocoder.yudao.module.iot.domain.TableDto;
 import cn.iocoder.yudao.module.iot.domain.TagsSelectDao;
@@ -27,12 +27,44 @@ public interface TdEngineService {
      *
      * @param schemaFields   schema字段
      * @param tagsFields     tags字段
+     * @param superTableName 超级表名称
+     */
+    void createSuperTable(List<TdFieldDO> schemaFields, List<TdFieldDO> tagsFields, String dataBaseName, String superTableName);
+
+    /**
+     * 检查超级表是否存在
+     */
+    Integer checkSuperTableExists(String dataBaseName, String superTableName);
+
+
+    /**
+     * 获取超级表的结构信息
+     */
+    List<Map<String, Object>> describeSuperTable(String dataBaseName, String superTableName);
+
+    /**
+     * 为超级表添加列
+     *
      * @param dataBaseName 数据库名称
      * @param superTableName 超级表名称
-     * @throws Exception 异常
+     * @param fieldsVo       字段信息
      */
-    void createSuperTable(List<FieldsVo> schemaFields, List<FieldsVo> tagsFields, String dataBaseName,
+    void addColumnForSuperTable(String dataBaseName,String superTableName, List<TdFieldDO> fieldsVo);
-                          String superTableName) throws Exception;
+
+    /**
+     * 为超级表删除列
+     *
+     * @param dataBaseName 数据库名称
+     * @param superTableName 超级表名称
+     * @param fieldsVo       字段信息
+     */
+    void dropColumnForSuperTable(String dataBaseName,String superTableName, List<TdFieldDO> fieldsVo);
+
+    /**
+     * 为超级表添加tag
+     */
+    Long getCountByTimesTamp(SelectDto selectDto) throws Exception;
+
 
     /**
      * 创建表
@@ -59,37 +91,6 @@ public interface TdEngineService {
      */
     List<Map<String, Object>> selectByTimesTamp(SelectDto selectDto) throws Exception;
 
-    /**
-     * 为超级表添加列
-     *
-     * @param superTableName 超级表名称
-     * @param fieldsVo       字段信息
-     * @throws Exception 异常
-     */
-    void addColumnForSuperTable(String superTableName, FieldsVo fieldsVo) throws Exception;
-
-    /**
-     * 为超级表删除列
-     *
-     * @param superTableName 超级表名称
-     * @param fieldsVo       字段信息
-     * @throws Exception 异常
-     */
-    void dropColumnForSuperTable(String superTableName, FieldsVo fieldsVo) throws Exception;
-
-    /**
-     * 为超级表添加tag
-     */
-    Long getCountByTimesTamp(SelectDto selectDto) throws Exception;
-
-    /**
-     * 检查表是否存在
-     *
-     * @return 1存在 0不存在
-     * @throws Exception 异常
-     */
-    Integer checkTableExists(SelectDto selectDto) throws Exception;
-
     /**
      * 初始化超级表
      *
@@ -138,4 +139,6 @@ public interface TdEngineService {
      * @return 数据
      */
     List<Map<String, Object>> getAggregateData(SelectVisualDto selectVisualDto);
+
+
 }

yudao-module-iot/yudao-module-iot-biz/src/main/java/cn/iocoder/yudao/module/iot/service/tdengine/TdEngineServiceImpl.java

@@ -1,10 +1,12 @@
 package cn.iocoder.yudao.module.iot.service.tdengine;
 
-import cn.iocoder.yudao.module.iot.domain.FieldsVo;
+import cn.iocoder.yudao.module.iot.dal.dataobject.tdengine.TdFieldDO;
+import cn.iocoder.yudao.module.iot.dal.tdengine.TdEngineMapper;
 import cn.iocoder.yudao.module.iot.domain.SelectDto;
 import cn.iocoder.yudao.module.iot.domain.TableDto;
 import cn.iocoder.yudao.module.iot.domain.TagsSelectDao;
 import cn.iocoder.yudao.module.iot.domain.visual.SelectVisualDto;
+import jakarta.annotation.Resource;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Service;
 
@@ -15,25 +17,27 @@ import java.util.Map;
 @Slf4j
 public class TdEngineServiceImpl implements TdEngineService {
 
+    @Resource
+    private TdEngineMapper tdEngineMapper;
 
     @Override
     public void createDateBase(String dataBaseName) {
-
+        tdEngineMapper.createDatabase(dataBaseName);
     }
 
     @Override
-    public void createSuperTable(List<FieldsVo> schemaFields, List<FieldsVo> tagsFields, String dataBaseName, String superTableName) {
+    public void createSuperTable(List<TdFieldDO> schemaFields, List<TdFieldDO> tagsFields, String dataBaseName, String superTableName) {
-
+        tdEngineMapper.createSuperTable(schemaFields, tagsFields, dataBaseName, superTableName);
     }
 
     @Override
     public void createTable(TableDto tableDto) {
-
+        tdEngineMapper.createTable(tableDto);
     }
 
     @Override
     public void insertData(TableDto tableDto) {
-
+        tdEngineMapper.insertData(tableDto);
     }
 
     @Override
@@ -42,13 +46,17 @@ public class TdEngineServiceImpl implements TdEngineService {
     }
 
     @Override
-    public void addColumnForSuperTable(String superTableName, FieldsVo fieldsVo) {
+    public void addColumnForSuperTable(String dataBaseName,String superTableName, List<TdFieldDO> fields) {
-
+        for (TdFieldDO field : fields) {
+            tdEngineMapper.addColumnForSuperTable(dataBaseName,superTableName, field);
+        }
     }
 
     @Override
-    public void dropColumnForSuperTable(String superTableName, FieldsVo fieldsVo) {
+    public void dropColumnForSuperTable(String dataBaseName,String superTableName, List<TdFieldDO> fields) {
-
+        for (TdFieldDO field : fields) {
+            tdEngineMapper.dropColumnForSuperTable(dataBaseName,superTableName, field);
+        }
     }
 
     @Override
@@ -56,11 +64,6 @@ public class TdEngineServiceImpl implements TdEngineService {
         return 0L;
     }
 
-    @Override
-    public Integer checkTableExists(SelectDto selectDto) {
-        return 0;
-    }
-
     @Override
     public void initSTableFrame(String msg) {
 
@@ -90,4 +93,15 @@ public class TdEngineServiceImpl implements TdEngineService {
     public List<Map<String, Object>> getAggregateData(SelectVisualDto selectVisualDto) {
         return List.of();
     }
+
+    @Override
+    public Integer checkSuperTableExists(String dataBaseName, String superTableName) {
+        List<Map<String, Object>> results = tdEngineMapper.showSuperTables(dataBaseName, superTableName);
+        return results == null || results.isEmpty() ? 0 : results.size();
+    }
+
+    @Override
+    public List<Map<String, Object>> describeSuperTable(String dataBaseName, String superTableName) {
+        return tdEngineMapper.describeSuperTable(dataBaseName, superTableName);
+    }
 }

yudao-module-iot/yudao-module-iot-biz/src/main/java/cn/iocoder/yudao/module/iot/service/thinkmodelfunction/IotThinkModelFunctionServiceImpl.java

@@ -174,8 +174,10 @@ public class IotThinkModelFunctionServiceImpl implements IotThinkModelFunctionSe
     public void createSuperTableDataModel(Long productId) {
         // 1. 查询产品
         IotProductDO product = productService.getProduct(productId);
+
         // 2. 查询产品的物模型功能列表
         List<IotThinkModelFunctionDO> functionList = thinkModelFunctionMapper.selectListByProductId(productId);
+
         // 3. 生成 TDengine 的数据模型
         dbStructureDataService.createSuperTableDataModel(product, functionList);
     }

yudao-module-iot/yudao-module-iot-biz/src/main/resources/mapper/tdengine/TdEngineMapper.xml

@@ -8,7 +8,7 @@
     </update>
 
     <update id="createSuperTable">
-        create table if not exists #{dataBaseName}.#{superTableName}
+        CREATE STABLE IF NOT EXISTS ${dataBaseName}.${superTableName}
         <foreach item="item" collection="schemaFields" separator=","
                  open="(" close=")" index="">
             <if test="item.fieldName != null || item.fieldName != ''">
@@ -16,46 +16,48 @@
             </if>
             <if test="item.dataType != null || item.dataType != ''">
                 <choose>
-                    <when test="item.dataType == 'timestamp'">
+                    <when test="item.dataType == 'TIMESTAMP'">
-                        timestamp
+                        TIMESTAMP
                     </when>
-                    <when test="item.dataType == 'tinyint'">
+                    <when test="item.dataType == 'TINYINT'">
-                        tinyint
+                        TINYINT
                     </when>
-                    <when test="item.dataType == 'smallint'">
+                    <when test="item.dataType == 'SMALLINT'">
-                        smallint
+                        SMALLINT
                     </when>
-                    <when test="item.dataType == 'int'">
+                    <when test="item.dataType == 'INT'">
-                        int
+                        INT
                     </when>
-                    <when test="item.dataType == 'bigint'">
+                    <when test="item.dataType == 'BIGINT'">
-                        bigint
+                        BIGINT
                     </when>
-                    <when test="item.dataType == 'float'">
+                    <when test="item.dataType == 'FLOAT'">
-                        float
+                        FLOAT
                     </when>
-                    <when test="item.dataType == 'double'">
+                    <when test="item.dataType == 'DOUBLE'">
-                        double
+                        DOUBLE
                     </when>
-                    <when test="item.dataType == 'binary'">
+                    <when test="item.dataType == 'BINARY'">
-                        binary
+                        BINARY
                     </when>
-                    <when test="item.dataType == 'nchar'">
+                    <when test="item.dataType == 'NCHAR'">
-                        nchar
+                        NCHAR
                     </when>
-                    <when test="item.dataType == 'bool'">
+                    <when test="item.dataType == 'BOOL'">
-                        bool
+                        BOOL
                     </when>
-                    <when test="item.dataType == 'json'">
+                    <when test="item.dataType == 'JSON'">
-                        json
+                        JSON
                     </when>
                 </choose>
             </if>
-            <if test="item.size != null">
+            <if test="item.dataLength > 0">
-                (#{item.size})
+                (
+                ${item.dataLength}
+                )
             </if>
         </foreach>
-        tags
+        TAGS
         <!--tdEngine不支持动态tags里的数据类型，只能使用choose标签比对-->
         <foreach item="item" collection="tagsFields" separator=","
                  open="(" close=")" index="">
@@ -64,43 +66,45 @@
             </if>
             <if test="item.dataType != null || item.dataType != ''">
                 <choose>
-                    <when test="item.dataType == 'timestamp'">
+                    <when test="item.dataType == 'TIMESTAMP'">
-                        timestamp
+                        TIMESTAMP
                     </when>
-                    <when test="item.dataType == 'tinyint'">
+                    <when test="item.dataType == 'TINYINT'">
-                        tinyint
+                        TINYINT
                     </when>
-                    <when test="item.dataType == 'smallint'">
+                    <when test="item.dataType == 'SMALLINT'">
-                        smallint
+                        SMALLINT
                     </when>
-                    <when test="item.dataType == 'int'">
+                    <when test="item.dataType == 'INT'">
-                        int
+                        INT
                     </when>
-                    <when test="item.dataType == 'bigint'">
+                    <when test="item.dataType == 'BIGINT'">
-                        bigint
+                        BIGINT
                     </when>
-                    <when test="item.dataType == 'float'">
+                    <when test="item.dataType == 'FLOAT'">
-                        float
+                        FLOAT
                     </when>
-                    <when test="item.dataType == 'double'">
+                    <when test="item.dataType == 'DOUBLE'">
-                        double
+                        DOUBLE
                     </when>
-                    <when test="item.dataType == 'binary'">
+                    <when test="item.dataType == 'BINARY'">
-                        binary
+                        BINARY
                     </when>
-                    <when test="item.dataType == 'nchar'">
+                    <when test="item.dataType == 'NCHAR'">
-                        nchar
+                        NCHAR
                     </when>
-                    <when test="item.dataType == 'bool'">
+                    <when test="item.dataType == 'BOOL'">
-                        bool
+                        BOOL
                     </when>
-                    <when test="item.dataType == 'json'">
+                    <when test="item.dataType == 'JSON'">
-                        json
+                        JSON
                     </when>
                 </choose>
             </if>
-            <if test="item.size != null">
+            <if test="item.dataLength > 0">
-                (#{item.size})
+                (
+                ${item.dataLength}
+                )
             </if>
         </foreach>
     </update>
@@ -135,7 +139,6 @@
         </foreach>
     </insert>
 
-
     <select id="selectByTimestamp" parameterType="cn.iocoder.yudao.module.iot.domain.SelectDto"
             resultType="Map">
         select * from #{dataBaseName}.#{tableName}
@@ -146,66 +149,58 @@
     </select>
 
     <update id="addColumnForSuperTable">
-        ALTER
+        ALTER STABLE ${dataBaseName}.${superTableName} ADD COLUMN
-        STABLE
+        <if test="field.fieldName != null || field.fieldName != ''">
-        #{superTableName}
+            #{field.fieldName}
-        ADD
-        COLUMN
-        <if test="fieldsVo.fieldName != null || fieldsVo.fieldName != ''">
-            #{fieldsVo.fieldName}
         </if>
-        <if test="fieldsVo.dataType != null || fieldsVo.dataType != ''">
+        <if test="field.dataType != null || field.dataType != ''">
             <choose>
-                <when test="fieldsVo.dataType == 'timestamp'">
+                <when test="field.dataType == 'TIMESTAMP'">
-                    timestamp
+                    TIMESTAMP
                 </when>
-                <when test="fieldsVo.dataType == 'tinyint'">
+                <when test="field.dataType == 'TINYINT'">
-                    tinyint
+                    TINYINT
                 </when>
-                <when test="fieldsVo.dataType == 'smallint'">
+                <when test="field.dataType == 'SMALLINT'">
-                    smallint
+                    SMALLINT
                 </when>
-                <when test="fieldsVo.dataType == 'int'">
+                <when test="field.dataType == 'INT'">
-                    int
+                    INT
                 </when>
-                <when test="fieldsVo.dataType == 'bigint'">
+                <when test="field.dataType == 'BIGINT'">
-                    bigint
+                    BIGINT
                 </when>
-                <when test="fieldsVo.dataType == 'float'">
+                <when test="field.dataType == 'FLOAT'">
-                    float
+                    FLOAT
                 </when>
-                <when test="fieldsVo.dataType == 'double'">
+                <when test="field.dataType == 'DOUBLE'">
-                    double
+                    DOUBLE
                 </when>
-                <when test="fieldsVo.dataType == 'binary'">
+                <when test="field.dataType == 'BINARY'">
-                    binary
+                    BINARY
                 </when>
-                <when test="fieldsVo.dataType == 'nchar'">
+                <when test="field.dataType == 'NCHAR'">
-                    nchar
+                    NCHAR
                 </when>
-                <when test="fieldsVo.dataType == 'bool'">
+                <when test="field.dataType == 'BOOL'">
-                    bool
+                    BOOL
                 </when>
-                <when test="fieldsVo.dataType == 'json'">
+                <when test="field.dataType == 'JSON'">
-                    json
+                    JSON
                 </when>
             </choose>
         </if>
-        <if test="fieldsVo.size != null">
+        <if test="field.dataLength > 0">
             (
-            #{fieldsVo.size}
+            #{field.dataLength}
             )
         </if>
     </update>
 
     <update id="dropColumnForSuperTable">
-        ALTER
+        ALTER STABLE ${dataBaseName}.${superTableName} DROP COLUMN
-        STABLE
+        <if test="field.fieldName != null || field.fieldName != ''">
-        #{superTableName}
+            #{field.fieldName}
-        DROP
-        COLUMN
-        <if test="fieldsVo.fieldName != null || fieldsVo.fieldName != ''">
-            #{fieldsVo.fieldName}
         </if>
     </update>
 
@@ -215,49 +210,49 @@
         #{superTableName}
         ADD
         TAG
-        <if test="fieldsVo.fieldName != null || fieldsVo.fieldName != ''">
+        <if test="field.fieldName != null || fieldDO.fieldName != ''">
-            #{fieldsVo.fieldName}
+            #{fieldDO.fieldName}
         </if>
-        <if test="fieldsVo.dataType != null || fieldsVo.dataType != ''">
+        <if test="fieldDO.dataType != null || fieldDO.dataType != ''">
             <choose>
-                <when test="fieldsVo.dataType == 'timestamp'">
+                <when test="fieldDO.dataType == 'timestamp'">
                     timestamp
                 </when>
-                <when test="fieldsVo.dataType == 'tinyint'">
+                <when test="fieldDO.dataType == 'tinyint'">
                     tinyint
                 </when>
-                <when test="fieldsVo.dataType == 'smallint'">
+                <when test="fieldDO.dataType == 'smallint'">
                     smallint
                 </when>
-                <when test="fieldsVo.dataType == 'int'">
+                <when test="fieldDO.dataType == 'int'">
                     int
                 </when>
-                <when test="fieldsVo.dataType == 'bigint'">
+                <when test="fieldDO.dataType == 'bigint'">
                     bigint
                 </when>
-                <when test="fieldsVo.dataType == 'float'">
+                <when test="fieldDO.dataType == 'float'">
                     float
                 </when>
-                <when test="fieldsVo.dataType == 'double'">
+                <when test="fieldDO.dataType == 'double'">
                     double
                 </when>
-                <when test="fieldsVo.dataType == 'binary'">
+                <when test="fieldDO.dataType == 'binary'">
                     binary
                 </when>
-                <when test="fieldsVo.dataType == 'nchar'">
+                <when test="fieldDO.dataType == 'nchar'">
                     nchar
                 </when>
-                <when test="fieldsVo.dataType == 'bool'">
+                <when test="fieldDO.dataType == 'bool'">
                     bool
                 </when>
-                <when test="fieldsVo.dataType == 'json'">
+                <when test="fieldDO.dataType == 'json'">
                     json
                 </when>
             </choose>
         </if>
-        <if test="fieldsVo.size != null">
+        <if test="fieldDO.dataLength > 0">
             (
-            #{fieldsVo.size}
+            #{fieldDO.dataLength}
             )
         </if>
     </update>
@@ -279,11 +274,8 @@
         FROM #{dataBaseName}.#{tableName} WHERE ${fieldName} BETWEEN #{startTime} AND #{endTime}
     </select>
 
-    <select id="checkTableExists" resultType="java.lang.Integer">
+    <select id="showSuperTables" resultType="java.util.Map">
-        SELECT COUNT(0)
+        SHOW ${dataBaseName}.STABLES LIKE '${superTableName}'
-        FROM information_schema.ins_tables
-        WHERE db_name = #{dataBaseName}
-          AND table_name = #{tableName}
     </select>
 
     <select id="getLastData" resultType="java.util.Map">
@@ -304,11 +296,13 @@
         FROM #{dataBaseName}.#{tableName} WHERE ts BETWEEN #{startTime} AND #{endTime}
         LIMIT #{num}
     </select>
+
     <select id="getRealtimeData" resultType="java.util.Map"
             parameterType="cn.iocoder.yudao.module.iot.domain.visual.SelectVisualDto">
         SELECT #{fieldName}, ts
         FROM #{dataBaseName}.#{tableName} LIMIT #{num}
     </select>
+
     <select id="getAggregateData" resultType="java.util.Map"
             parameterType="cn.iocoder.yudao.module.iot.domain.visual.SelectVisualDto">
         SELECT #{aggregate}(${fieldName})
@@ -316,9 +310,8 @@
         LIMIT #{num}
     </select>
 
-
+    <select id="describeSuperTable" resultType="java.util.Map">
-    <insert id="createSuperTableDevice">
+        DESCRIBE ${dataBaseName}.${superTableName}
-        ${sql}
+    </select>
-    </insert>
 
 </mapper>