diff --git a/src/connector/jdbc/src/test/java/com/taosdata/jdbc/DatabaseMetaDataTest.java b/src/connector/jdbc/src/test/java/com/taosdata/jdbc/DatabaseMetaDataTest.java
deleted file mode 100644
index 49b8de4495e7c7918b8db87de6d0bd60720b695e..0000000000000000000000000000000000000000
--- a/src/connector/jdbc/src/test/java/com/taosdata/jdbc/DatabaseMetaDataTest.java
+++ /dev/null
@@ -1,247 +0,0 @@
-package com.taosdata.jdbc;
-
-import org.junit.AfterClass;
-import org.junit.BeforeClass;
-import org.junit.Test;
-
-import java.sql.*;
-import java.util.Properties;
-
-public class DatabaseMetaDataTest {
-    static Connection connection = null;
-    static PreparedStatement statement = null;
-    static String dbName = "test";
-    static String tName = "t0";
-    static String host = "localhost";
-
-    @BeforeClass
-    public static void createConnection() throws SQLException {
-        try {
-            Class.forName("com.taosdata.jdbc.TSDBDriver");
-        } catch (ClassNotFoundException e) {
-            return;
-        }
-        Properties properties = new Properties();
-        properties.setProperty(TSDBDriver.PROPERTY_KEY_HOST, host);
-        properties.setProperty(TSDBDriver.PROPERTY_KEY_USER, "root");
-        properties.setProperty(TSDBDriver.PROPERTY_KEY_PASSWORD, "taosdata");
-        properties.setProperty(TSDBDriver.PROPERTY_KEY_CHARSET, "UTF-8");
-        properties.setProperty(TSDBDriver.PROPERTY_KEY_LOCALE, "en_US.UTF-8");
-        properties.setProperty(TSDBDriver.PROPERTY_KEY_TIME_ZONE, "UTC-8");
-        connection = DriverManager.getConnection("jdbc:TAOS://" + host + ":0/", properties);
-
-        String sql = "drop database if exists " + dbName;
-        statement = connection.prepareStatement(sql);
-        statement.executeUpdate("create database if not exists " + dbName);
-        statement.executeUpdate("create table if not exists " + dbName + "." + tName + " (ts timestamp, k int, v int)");
-    }
-
-    @Test
-    public void testMetaDataTest() throws SQLException {
-        DatabaseMetaData databaseMetaData = connection.getMetaData();
-        ResultSet resultSet = databaseMetaData.getTables(dbName, "t*", "t*", new String[]{"t"});
-        while (resultSet.next()) {
-            for (int i = 1; i <= resultSet.getMetaData().getColumnCount(); i++) {
-                System.out.printf("%d: %s\n", i, resultSet.getString(i));
-            }
-        }
-        resultSet.close();
-        databaseMetaData.isWrapperFor(null);
-        databaseMetaData.allProceduresAreCallable();
-        databaseMetaData.allTablesAreSelectable();
-        databaseMetaData.getURL();
-        databaseMetaData.getUserName();
-        databaseMetaData.isReadOnly();
-        databaseMetaData.nullsAreSortedHigh();
-        databaseMetaData.nullsAreSortedLow();
-        databaseMetaData.nullsAreSortedAtStart();
-        databaseMetaData.nullsAreSortedAtEnd();
-        databaseMetaData.getDatabaseProductName();
-        databaseMetaData.getDatabaseProductVersion();
-        databaseMetaData.getDriverName();
-        databaseMetaData.getDriverVersion();
-        databaseMetaData.getDriverMajorVersion();
-        databaseMetaData.getDriverMinorVersion();
-        databaseMetaData.usesLocalFiles();
-        databaseMetaData.usesLocalFilePerTable();
-        databaseMetaData.supportsMixedCaseIdentifiers();
-        databaseMetaData.storesUpperCaseIdentifiers();
-        databaseMetaData.storesLowerCaseIdentifiers();
-        databaseMetaData.storesMixedCaseIdentifiers();
-        databaseMetaData.supportsMixedCaseQuotedIdentifiers();
-        databaseMetaData.storesUpperCaseQuotedIdentifiers();
-        databaseMetaData.storesLowerCaseQuotedIdentifiers();
-        databaseMetaData.storesMixedCaseQuotedIdentifiers();
-        databaseMetaData.getIdentifierQuoteString();
-        databaseMetaData.getSQLKeywords();
-        databaseMetaData.getNumericFunctions();
-        databaseMetaData.getStringFunctions();
-        databaseMetaData.getSystemFunctions();
-        databaseMetaData.getTimeDateFunctions();
-        databaseMetaData.getSearchStringEscape();
-        databaseMetaData.getExtraNameCharacters();
-        databaseMetaData.supportsAlterTableWithAddColumn();
-        databaseMetaData.supportsAlterTableWithDropColumn();
-        databaseMetaData.supportsColumnAliasing();
-        databaseMetaData.nullPlusNonNullIsNull();
-        databaseMetaData.supportsConvert();
-        databaseMetaData.supportsConvert(0, 0);
-        databaseMetaData.supportsTableCorrelationNames();
-        databaseMetaData.supportsDifferentTableCorrelationNames();
-        databaseMetaData.supportsExpressionsInOrderBy();
-        databaseMetaData.supportsOrderByUnrelated();
-        databaseMetaData.supportsGroupBy();
-        databaseMetaData.supportsGroupByUnrelated();
-        databaseMetaData.supportsGroupByBeyondSelect();
-        databaseMetaData.supportsLikeEscapeClause();
-        databaseMetaData.supportsMultipleResultSets();
-        databaseMetaData.supportsMultipleTransactions();
-        databaseMetaData.supportsNonNullableColumns();
-        databaseMetaData.supportsMinimumSQLGrammar();
-        databaseMetaData.supportsCoreSQLGrammar();
-        databaseMetaData.supportsExtendedSQLGrammar();
-        databaseMetaData.supportsANSI92EntryLevelSQL();
-        databaseMetaData.supportsANSI92IntermediateSQL();
-        databaseMetaData.supportsANSI92FullSQL();
-        databaseMetaData.supportsIntegrityEnhancementFacility();
-        databaseMetaData.supportsOuterJoins();
-        databaseMetaData.supportsFullOuterJoins();
-        databaseMetaData.supportsLimitedOuterJoins();
-        databaseMetaData.getSchemaTerm();
-        databaseMetaData.getProcedureTerm();
-        databaseMetaData.getCatalogTerm();
-        databaseMetaData.isCatalogAtStart();
-        databaseMetaData.getCatalogSeparator();
-        databaseMetaData.supportsSchemasInDataManipulation();
-        databaseMetaData.supportsSchemasInProcedureCalls();
-        databaseMetaData.supportsSchemasInTableDefinitions();
-        databaseMetaData.supportsSchemasInIndexDefinitions();
-        databaseMetaData.supportsSchemasInPrivilegeDefinitions();
-        databaseMetaData.supportsCatalogsInDataManipulation();
-        databaseMetaData.supportsCatalogsInProcedureCalls();
-        databaseMetaData.supportsCatalogsInTableDefinitions();
-        databaseMetaData.supportsCatalogsInIndexDefinitions();
-        databaseMetaData.supportsCatalogsInPrivilegeDefinitions();
-        databaseMetaData.supportsPositionedDelete();
-        databaseMetaData.supportsPositionedUpdate();
-        databaseMetaData.supportsSelectForUpdate();
-        databaseMetaData.supportsStoredProcedures();
-        databaseMetaData.supportsSubqueriesInComparisons();
-        databaseMetaData.supportsSubqueriesInExists();
-        databaseMetaData.supportsSubqueriesInIns();
-        databaseMetaData.supportsSubqueriesInQuantifieds();
-        databaseMetaData.supportsCorrelatedSubqueries();
-        databaseMetaData.supportsUnion();
-        databaseMetaData.supportsUnionAll();
-        databaseMetaData.supportsOpenCursorsAcrossCommit();
-        databaseMetaData.supportsOpenCursorsAcrossRollback();
-        databaseMetaData.supportsOpenStatementsAcrossCommit();
-        databaseMetaData.supportsOpenStatementsAcrossRollback();
-        databaseMetaData.getMaxBinaryLiteralLength();
-        databaseMetaData.getMaxCharLiteralLength();
-        databaseMetaData.getMaxColumnNameLength();
-        databaseMetaData.getMaxColumnsInGroupBy();
-        databaseMetaData.getMaxColumnsInIndex();
-        databaseMetaData.getMaxColumnsInOrderBy();
-        databaseMetaData.getMaxColumnsInSelect();
-        databaseMetaData.getMaxColumnsInTable();
-        databaseMetaData.getMaxConnections();
-        databaseMetaData.getMaxCursorNameLength();
-        databaseMetaData.getMaxIndexLength();
-        databaseMetaData.getMaxSchemaNameLength();
-        databaseMetaData.getMaxProcedureNameLength();
-        databaseMetaData.getMaxCatalogNameLength();
-        databaseMetaData.getMaxRowSize();
-        databaseMetaData.doesMaxRowSizeIncludeBlobs();
-        databaseMetaData.getMaxStatementLength();
-        databaseMetaData.getMaxStatements();
-        databaseMetaData.getMaxTableNameLength();
-        databaseMetaData.getMaxTablesInSelect();
-        databaseMetaData.getMaxUserNameLength();
-        databaseMetaData.getDefaultTransactionIsolation();
-        databaseMetaData.supportsTransactions();
-        databaseMetaData.supportsTransactionIsolationLevel(0);
-        databaseMetaData.supportsDataDefinitionAndDataManipulationTransactions();
-        databaseMetaData.supportsDataManipulationTransactionsOnly();
-        databaseMetaData.dataDefinitionCausesTransactionCommit();
-        databaseMetaData.dataDefinitionIgnoredInTransactions();
-        try {
-            databaseMetaData.getProcedures("", "", "");
-        } catch (Exception e) {
-
-        }
-        try {
-            databaseMetaData.getProcedureColumns("", "", "", "");
-        } catch (Exception e) {
-        }
-        try {
-            databaseMetaData.getTables("", "", "", new String[]{""});
-        } catch (Exception e) {
-
-        }
-        databaseMetaData.getSchemas();
-        databaseMetaData.getCatalogs();
-//        databaseMetaData.getTableTypes();
-
-        databaseMetaData.getColumns(dbName, "", tName, "");
-        databaseMetaData.getColumnPrivileges("", "", "", "");
-        databaseMetaData.getTablePrivileges("", "", "");
-        databaseMetaData.getBestRowIdentifier("", "", "", 0, false);
-        databaseMetaData.getVersionColumns("", "", "");
-        databaseMetaData.getPrimaryKeys("", "", "");
-        databaseMetaData.getImportedKeys("", "", "");
-        databaseMetaData.getExportedKeys("", "", "");
-        databaseMetaData.getCrossReference("", "", "", "", "", "");
-        databaseMetaData.getTypeInfo();
-        databaseMetaData.getIndexInfo("", "", "", false, false);
-        databaseMetaData.supportsResultSetType(0);
-        databaseMetaData.supportsResultSetConcurrency(0, 0);
-        databaseMetaData.ownUpdatesAreVisible(0);
-        databaseMetaData.ownDeletesAreVisible(0);
-        databaseMetaData.ownInsertsAreVisible(0);
-        databaseMetaData.othersUpdatesAreVisible(0);
-        databaseMetaData.othersDeletesAreVisible(0);
-        databaseMetaData.othersInsertsAreVisible(0);
-        databaseMetaData.updatesAreDetected(0);
-        databaseMetaData.deletesAreDetected(0);
-        databaseMetaData.insertsAreDetected(0);
-        databaseMetaData.supportsBatchUpdates();
-        databaseMetaData.getUDTs("", "", "", new int[]{0});
-        databaseMetaData.getConnection();
-        databaseMetaData.supportsSavepoints();
-        databaseMetaData.supportsNamedParameters();
-        databaseMetaData.supportsMultipleOpenResults();
-        databaseMetaData.supportsGetGeneratedKeys();
-        databaseMetaData.getSuperTypes("", "", "");
-        databaseMetaData.getSuperTables("", "", "");
-        databaseMetaData.getAttributes("", "", "", "");
-        databaseMetaData.supportsResultSetHoldability(0);
-        databaseMetaData.getResultSetHoldability();
-        databaseMetaData.getDatabaseMajorVersion();
-        databaseMetaData.getDatabaseMinorVersion();
-        databaseMetaData.getJDBCMajorVersion();
-        databaseMetaData.getJDBCMinorVersion();
-        databaseMetaData.getSQLStateType();
-        databaseMetaData.locatorsUpdateCopy();
-        databaseMetaData.supportsStatementPooling();
-        databaseMetaData.getRowIdLifetime();
-        databaseMetaData.getSchemas("", "");
-        databaseMetaData.supportsStoredFunctionsUsingCallSyntax();
-        databaseMetaData.autoCommitFailureClosesAllResultSets();
-        databaseMetaData.getClientInfoProperties();
-        databaseMetaData.getFunctions("", "", "");
-        databaseMetaData.getFunctionColumns("", "", "", "");
-        databaseMetaData.getPseudoColumns("", "", "", "");
-        databaseMetaData.generatedKeyAlwaysReturned();
-    }
-
-
-    @AfterClass
-    public static void close() throws Exception {
-        statement.executeUpdate("drop database " + dbName);
-        statement.close();
-        connection.close();
-        Thread.sleep(10);
-
-    }
-}