diff --git a/integration-test/src/test/java/org/apache/iotdb/db/it/IoTDBSimpleQueryIT.java b/integration-test/src/test/java/org/apache/iotdb/db/it/IoTDBSimpleQueryIT.java
index 0272aaa2eea3..930ab8db1b3c 100644
--- a/integration-test/src/test/java/org/apache/iotdb/db/it/IoTDBSimpleQueryIT.java
+++ b/integration-test/src/test/java/org/apache/iotdb/db/it/IoTDBSimpleQueryIT.java
@@ -389,16 +389,6 @@ public void testSDTEncodingMergeSeq() {
         count++;
       }
       assertEquals(15, count);
-
-      // no sdt encoding when merging
-      statement.execute("merge");
-      resultSet = statement.executeQuery("select s0 from root.sg1.d0");
-      count = 0;
-      while (resultSet.next()) {
-        count++;
-      }
-      assertEquals(15, count);
-
     } catch (SQLException e) {
       e.printStackTrace();
     }
@@ -443,16 +433,6 @@ public void testSDTEncodingMergeUnseq() {
         count++;
       }
       assertEquals(18, count);
-
-      // no sdt encoding when merging
-      statement.execute("merge");
-      resultSet = statement.executeQuery("select s0 from root.sg1.d0");
-      count = 0;
-      while (resultSet.next()) {
-        count++;
-      }
-      assertEquals(18, count);
-
     } catch (SQLException e) {
       e.printStackTrace();
     }
diff --git a/integration-test/src/test/java/org/apache/iotdb/spark/it/Utils.java b/integration-test/src/test/java/org/apache/iotdb/spark/it/Utils.java
index ffdd3bd07f02..69ec5c0a5efd 100644
--- a/integration-test/src/test/java/org/apache/iotdb/spark/it/Utils.java
+++ b/integration-test/src/test/java/org/apache/iotdb/spark/it/Utils.java
@@ -74,7 +74,6 @@ protected static void prepareData(String jdbcUrl) throws ClassNotFoundException
             String.format(
                 Locale.ENGLISH, insertTemplate, i, i, i, (double) i, "'" + i + "'", "false"));
       }
-      statement.execute("merge");
 
       // prepare BufferWrite cache
       for (int i = 9000; i < 10000; i++) {
diff --git a/iotdb-client/jdbc/src/main/java/org/apache/iotdb/jdbc/IoTDBDatabaseMetadata.java b/iotdb-client/jdbc/src/main/java/org/apache/iotdb/jdbc/IoTDBDatabaseMetadata.java
index e20a007f0966..758453b80edf 100644
--- a/iotdb-client/jdbc/src/main/java/org/apache/iotdb/jdbc/IoTDBDatabaseMetadata.java
+++ b/iotdb-client/jdbc/src/main/java/org/apache/iotdb/jdbc/IoTDBDatabaseMetadata.java
@@ -225,7 +225,6 @@ public class IoTDBDatabaseMetadata implements DatabaseMetaData {
       "LIKE",
       "MAX_BY",
       "METADATA",
-      "MERGE",
       "MOVE",
       "MIN_TIME",
       "MAX_TIME",