improved sql parser parameterized sharding support. issue #1488

src/test/java/com/alibaba/druid/bvt/sql/mysql/MySqlParameterizedOutputVisitorTest_13.java

@@ -0,0 +1,19 @@
+package com.alibaba.druid.bvt.sql.mysql;
+
+import com.alibaba.druid.sql.visitor.ParameterizedOutputVisitorUtils;
+import com.alibaba.druid.util.JdbcConstants;
+import junit.framework.TestCase;
+
+/**
+ * Created by wenshao on 16/8/23.
+ */
+public class MySqlParameterizedOutputVisitorTest_13 extends TestCase {
+    public void test_for_parameterize() throws Exception {
+        final String dbType = JdbcConstants.MYSQL;
+
+        String sql = "select * from `user_0000` `user`";
+        String psql = ParameterizedOutputVisitorUtils.parameterize(sql, dbType);
+        assertEquals("SELECT *\n" +
+                "FROM user `user`", psql);
+    }
+}