FindBugs doesn't like it, but it must be like this.

h2/src/tools/org/h2/jaqu/Db.java

@@ -11,6 +11,7 @@ import java.sql.Connection;
 import java.sql.PreparedStatement;
 import java.sql.ResultSet;
 import java.sql.SQLException;
+import java.sql.Statement;
 import java.util.List;
 import java.util.Map;
 import java.util.Properties;
@@ -162,7 +163,10 @@ public class Db {
      */
     public int executeUpdate(String sql) {
         try {
-            return conn.createStatement().executeUpdate(sql);
+            Statement stat = conn.createStatement();
+            int updateCount = stat.executeUpdate(sql);
+            stat.close();
+            return updateCount;
         } catch (SQLException e) {
             throw new RuntimeException(e);
         }

h2/src/tools/org/h2/jaqu/Function.java

@@ -16,6 +16,7 @@ import org.h2.jaqu.util.Utils;
 public class Function implements Token {
 //## Java 1.5 begin ##
 
+    // it must be a new instance
     private static final Long COUNT_STAR = new Long(0);
 
     protected Object[] x;

h2/src/tools/org/h2/jaqu/util/Utils.java

@@ -51,6 +51,7 @@ public class Utils {
 
     @SuppressWarnings("unchecked")
     public static <T> T newObject(Class<T> clazz) {
+        // must create new instances
         if (clazz == Integer.class) {
             return (T) new Integer((int) counter++);
         } else if (clazz == String.class) {