diff --git a/src/test/java/com/alibaba/druid/bvt/sql/mysql/MySqlParameterizedOutputVisitorTest_8.java b/src/test/java/com/alibaba/druid/bvt/sql/mysql/MySqlParameterizedOutputVisitorTest_8.java
new file mode 100644
index 0000000000..23dd605a20
--- /dev/null
+++ b/src/test/java/com/alibaba/druid/bvt/sql/mysql/MySqlParameterizedOutputVisitorTest_8.java
@@ -0,0 +1,48 @@
+package com.alibaba.druid.bvt.sql.mysql;
+
+import com.alibaba.druid.sql.SQLUtils;
+import com.alibaba.druid.sql.ast.SQLStatement;
+import com.alibaba.druid.sql.dialect.mysql.visitor.MySqlExportParameterVisitor;
+import com.alibaba.druid.sql.parser.SQLParserUtils;
+import com.alibaba.druid.sql.parser.SQLStatementParser;
+import com.alibaba.druid.sql.visitor.ExportParameterVisitor;
+import com.alibaba.druid.sql.visitor.ParameterizedOutputVisitorUtils;
+import com.alibaba.druid.sql.visitor.ParameterizedVisitor;
+import com.alibaba.druid.util.JdbcConstants;
+import junit.framework.TestCase;
+import org.junit.Assert;
+
+import java.util.List;
+
+/**
+ * Created by wenshao on 16/8/22.
+ */
+public class MySqlParameterizedOutputVisitorTest_8 extends TestCase {
+
+    public void test_parameterize() throws Exception {
+        final String dbType = JdbcConstants.MYSQL;
+
+        String sql = "insert into test values(2,1) on duplicate key update ts=ts % 10000 +1";
+        String psql = ParameterizedOutputVisitorUtils.parameterize(sql, dbType);
+        Assert.assertEquals("INSERT INTO test\n" +
+                "VALUES (?, ?)\n" +
+                "ON DUPLICATE KEY UPDATE ts = ts % ? + ?", psql);
+
+
+        SQLStatementParser parser = SQLParserUtils.createSQLStatementParser(sql, dbType);
+        List<SQLStatement> stmtList = parser.parseStatementList();
+
+        StringBuilder out = new StringBuilder();
+        ExportParameterVisitor visitor = new MySqlExportParameterVisitor(out);
+        for (SQLStatement stmt : stmtList) {
+            stmt.accept(visitor);
+        }
+
+        Assert.assertEquals(4, visitor.getParameters().size());
+        Assert.assertEquals(2, visitor.getParameters().get(0));
+        Assert.assertEquals(1, visitor.getParameters().get(1));
+        Assert.assertEquals(10000, visitor.getParameters().get(2));
+        Assert.assertEquals(1, visitor.getParameters().get(3));
+    }
+}
+
diff --git a/src/test/java/com/alibaba/druid/bvt/sql/mysql/MySqlParameterizedOutputVisitorTest_9.java b/src/test/java/com/alibaba/druid/bvt/sql/mysql/MySqlParameterizedOutputVisitorTest_9.java
new file mode 100644
index 0000000000..0ced15ce9b
--- /dev/null
+++ b/src/test/java/com/alibaba/druid/bvt/sql/mysql/MySqlParameterizedOutputVisitorTest_9.java
@@ -0,0 +1,46 @@
+package com.alibaba.druid.bvt.sql.mysql;
+
+import com.alibaba.druid.sql.SQLUtils;
+import com.alibaba.druid.sql.ast.SQLStatement;
+import com.alibaba.druid.sql.dialect.mysql.visitor.MySqlExportParameterVisitor;
+import com.alibaba.druid.sql.parser.SQLParserUtils;
+import com.alibaba.druid.sql.parser.SQLStatementParser;
+import com.alibaba.druid.sql.visitor.ExportParameterVisitor;
+import com.alibaba.druid.sql.visitor.ParameterizedOutputVisitorUtils;
+import com.alibaba.druid.sql.visitor.ParameterizedVisitor;
+import com.alibaba.druid.util.JdbcConstants;
+import junit.framework.TestCase;
+import org.junit.Assert;
+
+import java.util.List;
+
+/**
+ * Created by wenshao on 16/8/22.
+ */
+public class MySqlParameterizedOutputVisitorTest_9 extends TestCase {
+
+    public void test_parameterize() throws Exception {
+        final String dbType = JdbcConstants.MYSQL;
+
+        String sql = "select * from t limit 3, 4";
+        String psql = ParameterizedOutputVisitorUtils.parameterize(sql, dbType);
+        Assert.assertEquals("SELECT *\n" +
+                "FROM t\n" +
+                "LIMIT ?, ?", psql);
+
+
+        SQLStatementParser parser = SQLParserUtils.createSQLStatementParser(sql, dbType);
+        List<SQLStatement> stmtList = parser.parseStatementList();
+
+        StringBuilder out = new StringBuilder();
+        ExportParameterVisitor visitor = new MySqlExportParameterVisitor(out);
+        for (SQLStatement stmt : stmtList) {
+            stmt.accept(visitor);
+        }
+
+        Assert.assertEquals(2, visitor.getParameters().size());
+        Assert.assertEquals(3, visitor.getParameters().get(0));
+        Assert.assertEquals(4, visitor.getParameters().get(1));
+    }
+}
+