添加公共参数和方法

src/main/java/com/njcn/influx/constant/InfluxDbSqlConstant.java

@@ -131,5 +131,29 @@ public interface InfluxDbSqlConstant {
      */
     String TIME = "time" + StrPool.C_SPACE;
 
+    /**
+     * 谐波电压含有率前缀
+     */
+    String V = "v_";
+
+    /**
+     * 谐波电流幅值前缀
+     */
+    String I = "i_";
+
+    /**
+     * 有功功率前缀
+     */
+    String P = "p_";
+
+    /**
+     * 无功功率前缀
+     */
+    String Q = "q_";
+
+    /**
+     * 视在功率前缀
+     */
+    String S = "s_";
 
 }

src/main/java/com/njcn/influx/query/InfluxQueryWrapper.java

@@ -924,6 +924,26 @@ public class InfluxQueryWrapper {
         return this;
     }
 
+    /***
+     * 批量返回field key较大的百分之N的值。
+     * @author xuyang
+     * @param prefix 表字段名
+     * @param suffix 映射名称
+     * @return InfluxQueryWrapper
+     * 输出 percentile(prefix+diffContent+suffix) as prefix+diffContent+suffix
+     */
+    public InfluxQueryWrapper percentileSamePrefixAndSuffix(String prefix, String suffix, List<Object> diffContent, int percent) {
+        if (CollectionUtil.isEmpty(diffContent)) {
+            throw new RuntimeException("查询数值集合为空，请校验！");
+        }
+        for (Object obj : diffContent) {
+            String fieldName = prefix + obj + suffix;
+            this.percentile(fieldName, percent);
+        }
+        return this;
+    }
+
+
     /**************************自定义查询条件，比如between、>、<、=、>=、<=等等**************************/
 
     /***