diff --git a/source/libs/index/test/jsonUT.cc b/source/libs/index/test/jsonUT.cc
index f0c64554422b2ad6dae59f5822537500b66d3e1d..86592f0cf31072b55308b203f883905ec2bfae71 100644
--- a/source/libs/index/test/jsonUT.cc
+++ b/source/libs/index/test/jsonUT.cc
@@ -580,38 +580,46 @@ TEST_F(JsonEnv, testWriteJsonTfileAndCache_FLOAT) {
 }
 TEST_F(JsonEnv, testWriteJsonTfileAndCache_DOUBLE) {
   {
-    double      val = 10.0;
-    std::string colName("test1");
+    double val = 10.0;
     for (int i = 0; i < 1000; i++) {
-      WriteData(index, colName, TSDB_DATA_TYPE_DOUBLE, &val, sizeof(val), i);
+      WriteData(index, "test1", TSDB_DATA_TYPE_DOUBLE, &val, sizeof(val), i);
     }
   }
   {
-    double      val = 2.0;
-    std::string colName("test1");
+    double val = 2.0;
     for (int i = 0; i < 1000; i++) {
-      WriteData(index, colName, TSDB_DATA_TYPE_DOUBLE, &val, sizeof(val), i + 1000);
+      WriteData(index, "test1", TSDB_DATA_TYPE_DOUBLE, &val, sizeof(val), i + 1000);
     }
   }
   {
     SArray*     res = NULL;
     std::string colName("test1");
     double      val = 1.9;
-    Search(index, colName, TSDB_DATA_TYPE_DOUBLE, &val, sizeof(val), QUERY_GREATER_EQUAL, &res);
+    Search(index, "test1", TSDB_DATA_TYPE_DOUBLE, &val, sizeof(val), QUERY_GREATER_EQUAL, &res);
     EXPECT_EQ(2000, taosArrayGetSize(res));
   }
   {
-    SArray*     res = NULL;
-    std::string colName("test1");
-    double      val = 2.1;
-    Search(index, colName, TSDB_DATA_TYPE_DOUBLE, &val, sizeof(val), QUERY_GREATER_EQUAL, &res);
+    SArray* res = NULL;
+    double  val = 2.1;
+    Search(index, "test1", TSDB_DATA_TYPE_DOUBLE, &val, sizeof(val), QUERY_GREATER_EQUAL, &res);
     EXPECT_EQ(1000, taosArrayGetSize(res));
   }
   {
-    std::string colName("test1");
-    SArray*     res = NULL;
-    double      val = 2.1;
-    Search(index, colName, TSDB_DATA_TYPE_DOUBLE, &val, sizeof(val), QUERY_GREATER_EQUAL, &res);
+    SArray* res = NULL;
+    double  val = 2.1;
+    Search(index, "test1", TSDB_DATA_TYPE_DOUBLE, &val, sizeof(val), QUERY_GREATER_EQUAL, &res);
+    EXPECT_EQ(1000, taosArrayGetSize(res));
+  }
+  {
+    SArray* res = NULL;
+    double  val = 10.0;
+    Search(index, "test1", TSDB_DATA_TYPE_DOUBLE, &val, sizeof(val), QUERY_LESS_EQUAL, &res);
+    EXPECT_EQ(2000, taosArrayGetSize(res));
+  }
+  {
+    SArray* res = NULL;
+    double  val = 10.0;
+    Search(index, "test1", TSDB_DATA_TYPE_DOUBLE, &val, sizeof(val), QUERY_LESS_THAN, &res);
     EXPECT_EQ(1000, taosArrayGetSize(res));
   }
 }