diff --git a/src/main/java/com/njcn/influx/constant/InfluxDbSqlConstant.java b/src/main/java/com/njcn/influx/constant/InfluxDbSqlConstant.java
index b01824e..93580df 100644
--- a/src/main/java/com/njcn/influx/constant/InfluxDbSqlConstant.java
+++ b/src/main/java/com/njcn/influx/constant/InfluxDbSqlConstant.java
@@ -75,6 +75,7 @@ public interface InfluxDbSqlConstant {
     String AS_VALUE = StrPool.C_SPACE + "as value" + StrPool.C_SPACE;
 
     String EQ = "=";
+    String DOUBLE_EQ = "==";
     String NE = "!=";
     String QM = "'";
     String DQM = "\"";
@@ -84,6 +85,7 @@ public interface InfluxDbSqlConstant {
     String GE = ">=";
     String LT = "<";
     String LE = "<=";
+    String SLASH = "/";
 
     /**
      * influxDB函数拼接.