improved odps sql parser, support udf

src/test/java/com/alibaba/druid/bvt/sql/odps/OdpsUDFTest.java

@@ -0,0 +1,16 @@
+package com.alibaba.druid.bvt.sql.odps;
+
+import org.junit.Assert;
+
+import com.alibaba.druid.sql.SQLUtils;
+
+import junit.framework.TestCase;
+
+public class OdpsUDFTest extends TestCase {
+    
+    public void test_if() throws Exception {
+        String sql = "select secods:ip_region('192.168.1.1', 'city') from dual";
+        Assert.assertEquals("SELECT secods:ip_region('192.168.1.1', 'city')" //
+                + "\nFROM dual", SQLUtils.formatOdps(sql));
+    }
+}