improved sql parser.

src/test/java/com/alibaba/druid/bvt/sql/repository/OracleJoinResolveTest.java

@@ -0,0 +1,23 @@
+package com.alibaba.druid.bvt.sql.repository;
+
+import com.alibaba.druid.sql.repository.SchemaRepository;
+import com.alibaba.druid.util.JdbcConstants;
+import junit.framework.TestCase;
+
+/**
+ * Created by wenshao on 03/08/2017.
+ */
+public class OracleJoinResolveTest extends TestCase {
+    protected SchemaRepository repository = new SchemaRepository(JdbcConstants.ORACLE);
+
+    public void test_for_issue() throws Exception {
+        repository.console("create table t_user (uid number(20, 0), gid number(20, 0), uname varchar2(20))");
+        repository.console("create table t_group (id number(20, 0), name varchar2(20))");
+
+        assertEquals("SELECT a.uid, a.gid, a.uname\n" +
+                "FROM t_user a\n" +
+                "\tINNER JOIN t_group b\n" +
+                "WHERE a.uid = b.id"
+                , repository.resolve("select a.* from t_user a inner join t_group b where a.uid = id"));
+    }
+}