Updated getIndexInfo() to include Columnstore indexes by using custom query.

src/main/java/com/microsoft/sqlserver/jdbc/SQLServerConnection.java

@@ -2446,7 +2446,7 @@ Connection connectInternal(Properties propsIn,
                 if (null != sPropValue)
                     validateMaxSQLLoginName(sPropKey, sPropValue);
                 else
-                    activeConnectionProperties.setProperty(sPropKey, SQLServerDriver.DEFAULT_APP_NAME);
+                    activeConnectionProperties.setProperty(sPropKey, SQLServerDriver.constructedAppName);
 
                 sPropKey = SQLServerDriverBooleanProperty.LAST_UPDATE_COUNT.toString();
                 sPropValue = activeConnectionProperties.getProperty(sPropKey);

src/main/java/com/microsoft/sqlserver/jdbc/SQLServerDataSource.java

@@ -170,7 +170,7 @@ public void setApplicationName(String applicationName) {
     @Override
     public String getApplicationName() {
         return getStringProperty(connectionProps, SQLServerDriverStringProperty.APPLICATION_NAME.toString(),
-                SQLServerDriverStringProperty.APPLICATION_NAME.getDefaultValue());
+                SQLServerDriver.constructedAppName);
     }
 
     /**

src/main/java/com/microsoft/sqlserver/jdbc/SQLServerDatabaseMetaData.java

@@ -1197,39 +1197,47 @@ private ResultSet executeSPFkeys(String[] procParams) throws SQLException {
         }
     }
 
-    private static final String[] getIndexInfoColumnNames = { /* 1 */ TABLE_CAT, /* 2 */ TABLE_SCHEM,
-            /* 3 */ TABLE_NAME, /* 4 */ NON_UNIQUE, /* 5 */ INDEX_QUALIFIER, /* 6 */ INDEX_NAME, /* 7 */ TYPE,
-            /* 8 */ ORDINAL_POSITION, /* 9 */ COLUMN_NAME, /* 10 */ ASC_OR_DESC, /* 11 */ CARDINALITY, /* 12 */ PAGES,
-            /* 13 */ FILTER_CONDITION};
-
     @Override
     public java.sql.ResultSet getIndexInfo(String cat, String schema, String table, boolean unique,
-            boolean approximate) throws SQLServerException, SQLTimeoutException {
+            boolean approximate) throws SQLException {
         if (loggerExternal.isLoggable(Level.FINER) && Util.isActivityTraceOn()) {
             loggerExternal.finer(toString() + ACTIVITY_ID + ActivityCorrelator.getCurrent().toString());
         }
         checkClosed();
         /*
-         * sp_statistics [ @table_name = ] 'table_name' [ , [ @table_owner = ] 'owner' ] [ , [ @table_qualifier = ]
-         * 'qualifier' ] [ , [ @index_name = ] 'index_name' ] [ , [ @is_unique = ] 'is_unique' ] [ , [ @accuracy = ]
-         * 'accuracy' ]
-         */
-        String[] arguments = new String[6];
-        arguments[0] = table;
-        arguments[1] = schema;
-        arguments[2] = cat;
-        // use default for index name
-        arguments[3] = "%"; // index name % is default
-        if (unique)
-            arguments[4] = "Y"; // is_unique
-        else
-            arguments[4] = "N";
-        if (approximate)
-            arguments[5] = "Q";
-        else
-            arguments[5] = "E";
-        return getResultSetWithProvidedColumnNames(cat, CallableHandles.SP_STATISTICS, arguments,
-                getIndexInfoColumnNames);
+        * Replaced the use of the sp_statistics stored procedure with a custom query to retrieve index information.
+        * 
+        * Reason for change:
+        * The sp_statistics procedure was not returning Columnstore indexes, which was limiting the results.
+        * To address this issue and include all index types (Clustered, NonClustered, and Columnstore), a direct
+        * SQL query using sys.indexes, sys.index_columns, and related system views was implemented.
+        * 
+        * This query ensures a complete set of index information, regardless of the index type, as a workaround for
+        * the limitations of sp_statistics.
+        * 
+        * GitHub Issue: #2546 - Columnstore indexes were missing from sp_statistics results.
+        */
+        StringBuilder queryBuilder = new StringBuilder();
+        queryBuilder.append("SELECT ")
+                    .append("db_name() AS CatalogName, ")
+                    .append("sch.name AS SchemaName, ")
+                    .append("t.name AS TableName, ")
+                    .append("i.name AS IndexName, ")
+                    .append("i.type_desc AS IndexType, ")
+                    .append("i.is_unique AS IsUnique, ")
+                    .append("c.name AS ColumnName, ")
+                    .append("ic.key_ordinal AS ColumnOrder ")
+                    .append("FROM sys.indexes i ")
+                    .append("INNER JOIN sys.index_columns ic ON i.object_id = ic.object_id AND i.index_id = ic.index_id ")
+                    .append("INNER JOIN sys.columns c ON ic.object_id = c.object_id AND ic.column_id = c.column_id ")
+                    .append("INNER JOIN sys.tables t ON i.object_id = t.object_id ")
+                    .append("INNER JOIN sys.schemas sch ON t.schema_id = sch.schema_id ")
+                    .append("WHERE t.name = '").append(table).append("' ")
+                    .append("AND sch.name = '").append(schema).append("' ")
+                    .append("ORDER BY t.name, i.name, ic.key_ordinal");
+
+        String query = queryBuilder.toString();
+        return getResultSetFromInternalQueries(cat, query);
     }
 
     @Override

src/main/java/com/microsoft/sqlserver/jdbc/SQLServerDriver.java

@@ -731,7 +731,32 @@ public final class SQLServerDriver implements java.sql.Driver {
     static final String AUTH_DLL_NAME = "mssql-jdbc_auth-" + SQLJdbcVersion.MAJOR + "." + SQLJdbcVersion.MINOR + "."
             + SQLJdbcVersion.PATCH + "." + Util.getJVMArchOnWindows() + SQLJdbcVersion.RELEASE_EXT;
     static final String DEFAULT_APP_NAME = "Microsoft JDBC Driver for SQL Server";
+    static final String APP_NAME_TEMPLATE = "Microsoft JDBC - %s, %s - %s";
+    static final String constructedAppName;
+    static {
+        constructedAppName = getAppName();
+    }
 
+    /**
+     * Constructs the application name using system properties for OS, platform, and architecture.
+     * If any of the properties cannot be fetched, it falls back to the default application name.
+     * Format -> Microsoft JDBC - {OS}, {Platform} - {architecture}
+     *
+     * @return the constructed application name or the default application name if properties are not available
+     */
+    static String getAppName() {
+        String osName = System.getProperty("os.name", "");
+        String osArch = System.getProperty("os.arch", "");
+        String javaVmName = System.getProperty("java.vm.name", "");
+        String javaVmVersion = System.getProperty("java.vm.version", "");
+        String platform = javaVmName.isEmpty() || javaVmVersion.isEmpty() ? "" : javaVmName + " " + javaVmVersion;
+
+        if (osName.isEmpty() && platform.isEmpty() && osArch.isEmpty()) {
+            return DEFAULT_APP_NAME;
+        }
+        return String.format(APP_NAME_TEMPLATE, osName, platform, osArch);
+    }
+
     private static final String[] TRUE_FALSE = {"true", "false"};
 
     private static final SQLServerDriverPropertyInfo[] DRIVER_PROPERTIES = {
@@ -741,7 +766,7 @@ public final class SQLServerDriver implements java.sql.Driver {
                     SQLServerDriverStringProperty.APPLICATION_INTENT.getDefaultValue(), false,
                     new String[] {ApplicationIntent.READ_ONLY.toString(), ApplicationIntent.READ_WRITE.toString()}),
             new SQLServerDriverPropertyInfo(SQLServerDriverStringProperty.APPLICATION_NAME.toString(),
-                    SQLServerDriverStringProperty.APPLICATION_NAME.getDefaultValue(), false, null),
+            		SQLServerDriverStringProperty.APPLICATION_NAME.getDefaultValue(), false, null),
             new SQLServerDriverPropertyInfo(SQLServerDriverStringProperty.COLUMN_ENCRYPTION.toString(),
                     SQLServerDriverStringProperty.COLUMN_ENCRYPTION.getDefaultValue(), false,
                     new String[] {ColumnEncryptionSetting.DISABLED.toString(),
@@ -1028,6 +1053,9 @@ String getClassNameLogging() {
                 drLogger.finer("Error registering driver: " + e);
             }
         }
+        if (loggerExternal.isLoggable(Level.FINE)) {
+            loggerExternal.log(Level.FINE, "Application Name: " + SQLServerDriver.constructedAppName);
+        }
     }
 
     // Check for jdk.net.ExtendedSocketOptions to set TCP keep-alive options for idle connection resiliency
@@ -1266,6 +1294,9 @@ public java.sql.Connection connect(String url, Properties suppliedProperties) th
         Properties connectProperties = parseAndMergeProperties(url, suppliedProperties);
         if (connectProperties != null) {
             result = DriverJDBCVersion.getSQLServerConnection(toString());
+            if (connectProperties.getProperty(SQLServerDriverStringProperty.APPLICATION_NAME.toString()) == null) {
+                connectProperties.setProperty(SQLServerDriverStringProperty.APPLICATION_NAME.toString(), SQLServerDriver.constructedAppName);
+            }   
             result.connect(connectProperties, null);
         }
         loggerExternal.exiting(getClassNameLogging(), "connect", result);

src/main/java/com/microsoft/sqlserver/jdbc/SQLServerPreparedStatement.java

@@ -1246,16 +1246,25 @@
      */
     private SQLServerResultSet buildExecuteMetaData() throws SQLServerException, SQLTimeoutException {
         String fmtSQL = userSQL;
-
+ 
         SQLServerResultSet emptyResultSet = null;
         try {
-            fmtSQL = replaceMarkerWithNull(fmtSQL);
             internalStmt = (SQLServerStatement) connection.createStatement();
             emptyResultSet = internalStmt.executeQueryInternal("set fmtonly on " + fmtSQL + "\nset fmtonly off");
         } catch (SQLServerException sqle) {
             // Ignore empty result set errors, otherwise propagate the server error.
             if (!sqle.getMessage().equals(SQLServerException.getErrString("R_noResultset"))) {
-                throw sqle;
+                //try by replacing ? characters in case that was an issue 
+                       try {
+                          fmtSQL = replaceMarkerWithNull(fmtSQL);
+                          internalStmt = (SQLServerStatement) connection.createStatement();
+                          emptyResultSet = internalStmt.executeQueryInternal("set fmtonly on " + fmtSQL + "\nset fmtonly off");
+                       } catch (SQLServerException ex) {
+                          // Ignore empty result set errors, otherwise propagate the server error.
+                          if (!ex.getMessage().equals(SQLServerException.getErrString("R_noResultset"))) {
+                             throw ex;
+                          }
+               }
             }
         }
         return emptyResultSet;

src/main/java/microsoft/sql/DateTimeOffset.java

@@ -5,6 +5,8 @@
 
 package microsoft.sql;
 
+import java.time.OffsetDateTime;
+import java.time.ZoneOffset;
 import java.util.Calendar;
 import java.util.Locale;
 import java.util.TimeZone;
@@ -190,7 +192,6 @@ public String toString() {
                                                                    .substring(2), // -> "123456"
                                                            formattedOffset);
         }
-
         return result;
     }
 
@@ -257,12 +258,32 @@ public java.sql.Timestamp getTimestamp() {
      * @return OffsetDateTime equivalent to this DateTimeOffset object.
      */
     public java.time.OffsetDateTime getOffsetDateTime() {
-        java.time.ZoneOffset zoneOffset = java.time.ZoneOffset.ofTotalSeconds(60 * minutesOffset);
-        java.time.LocalDateTime localDateTime = java.time.LocalDateTime.ofEpochSecond(utcMillis / 1000, nanos,
-                zoneOffset);
-        return java.time.OffsetDateTime.of(localDateTime, zoneOffset);
+        // Format the offset as +hh:mm or -hh:mm. Zero offset is formatted as +00:00.
+        String formattedOffset = (minutesOffset < 0) ?
+                String.format(Locale.US, "-%1$02d:%2$02d", -minutesOffset / 60, -minutesOffset % 60) :
+                    String.format(Locale.US, "+%1$02d:%2$02d", minutesOffset / 60, minutesOffset % 60);
+
+        // Create a Calendar instance with the time zone set to GMT plus the formatted offset
+        Calendar calendar = Calendar.getInstance(TimeZone.getTimeZone("GMT" + formattedOffset), Locale.US);
+        // Initialize the calendar with the UTC milliseconds value
+        calendar.setTimeInMillis(utcMillis);
+
+        // Extract the date and time components from the calendar
+        int year = calendar.get(Calendar.YEAR);
+        int month = calendar.get(Calendar.MONTH) + 1; // Calendar.MONTH is zero-based
+        int day = calendar.get(Calendar.DAY_OF_MONTH);
+        int hour = calendar.get(Calendar.HOUR_OF_DAY);
+        int minute = calendar.get(Calendar.MINUTE);
+        int second = calendar.get(Calendar.SECOND);
+
+        // Create the ZoneOffset from the minutesOffset
+        ZoneOffset offset = ZoneOffset.ofTotalSeconds(minutesOffset * 60);
+
+        // Create and return the OffsetDateTime
+        return OffsetDateTime.of(year, month, day, hour, minute, second, nanos, offset);
     }
-
+
+
     /**
      * Returns this DateTimeOffset object's offset value.
      *

src/test/java/com/microsoft/sqlserver/jdbc/SQLServerDriverTest.java

@@ -2,6 +2,8 @@
 
 import static org.junit.Assert.fail;
 import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
 import static org.junit.jupiter.api.Assertions.assertTrue;
 
 import java.sql.Connection;
@@ -190,4 +192,78 @@ public void testConnectionDriver() throws SQLException {
             }
         }
     }
+
+    /**
+     * test application name
+     * 
+     * @throws SQLException
+     */
+    @Test
+    public void testApplicationName() throws SQLException {
+        try (Connection conn = DriverManager.getConnection(connectionString);
+             Statement stmt = conn.createStatement();
+             ResultSet rs = stmt.executeQuery("SELECT program_name FROM sys.dm_exec_sessions WHERE session_id = @@SPID")) {
+            if (rs.next()) {
+                assertEquals(SQLServerDriver.constructedAppName, rs.getString("program_name"));
+            }
+        } catch (SQLException e) {
+            fail(e.getMessage());
+        }
+    }
+
+    /**
+     * test application name by executing select app_name()
+     * 
+     * @throws SQLException
+     */
+    @Test
+    public void testApplicationNameUsingApp_Name() throws SQLException {
+        try (Connection conn = DriverManager.getConnection(connectionString);
+             Statement stmt = conn.createStatement();
+             ResultSet rs = stmt.executeQuery("SELECT app_name()")) {
+            if (rs.next()) {
+                assertEquals(SQLServerDriver.constructedAppName, rs.getString(1));
+            }
+        } catch (SQLException e) {
+            fail(e.getMessage());
+        }
+    }
+
+    /**
+     * test application name by executing select app_name()
+     * 
+     * @throws SQLException
+     */
+    @Test
+    public void testAppNameWithSpecifiedApplicationName() throws SQLException {
+        String url = connectionString + ";applicationName={0123456789012345678901234567890123456789012345678901234567890123456789012345678901234589012345678901234567890123456789012345678}";
+
+        try (Connection conn = DriverManager.getConnection(url);
+             Statement stmt = conn.createStatement();
+             ResultSet rs = stmt.executeQuery("SELECT app_name()")) {
+            if (rs.next()) {
+                assertEquals("0123456789012345678901234567890123456789012345678901234567890123456789012345678901234589012345678901234567890123456789012345678", rs.getString(1));
+            }
+        } catch (SQLException e) {
+            fail(e.getMessage());
+        }
+    }
+
+    /**
+     * test application name when system properties are empty
+     * 
+     */
+    @Test
+    public void testGetAppName() {
+        String appName = SQLServerDriver.getAppName();
+        assertNotNull(appName, "Application name should not be null");
+        assertFalse(appName.isEmpty(), "Application name should not be empty");
+
+        System.setProperty("os.name", "");
+        System.setProperty("os.arch", "");
+        System.setProperty("java.vm.name", "");
+        System.setProperty("java.vm.version", "");
+        String defaultAppName = SQLServerDriver.getAppName();
+        assertEquals(SQLServerDriver.DEFAULT_APP_NAME, defaultAppName, "Application name should be the default one");
+    }
 }

src/test/java/com/microsoft/sqlserver/jdbc/TestResource.java

@@ -216,5 +216,9 @@ protected Object[][] getContents() {
             {"R_expectedClassDoesNotMatchActualClass",
                     "Expected column class {0} does not match actual column class {1} for column {2}."},
             {"R_loginFailedMI", "Login failed for user '<token-identified principal>'"},
-            {"R_MInotAvailable", "Managed Identity authentication is not available"},};
+            {"R_MInotAvailable", "Managed Identity authentication is not available"},
+            {"R_noSQLWarningsCreateTableConnection", "Expecting NO SQLWarnings from 'create table', at Connection."},
+            {"R_noSQLWarningsCreateTableStatement", "Expecting NO SQLWarnings from 'create table', at Statement."},
+            {"R_noSQLWarningsCreateIndexConnection", "Expecting NO SQLWarnings from 'create index', at Connection."},
+            {"R_noSQLWarningsCreateIndexStatement", "Expecting NO SQLWarnings from 'create index', at Statement."},};
 }