mysql parser bug fixed

src/main/java/com/alibaba/druid/sql/ast/SQLHint.java

@@ -0,0 +1,6 @@
+package com.alibaba.druid.sql.ast;
+
+
+public interface SQLHint extends SQLObject {
+
+}

src/main/java/com/alibaba/druid/sql/ast/statement/SQLJoinTableSource.java

@@ -91,24 +91,24 @@ public class SQLJoinTableSource extends SQLTableSourceImpl {
     }
 
     public static enum JoinType {
-        COMMA, JOIN, INNER_JOIN, CROSS_JOIN, NATURAL_JOIN, NATURAL_INNER_JOIN, LEFT_OUTER_JOIN, RIGHT_OUTER_JOIN,
-        FULL_OUTER_JOIN;
+        COMMA(","), // 
+        JOIN("JOIN"), //
+        INNER_JOIN("INNER JOIN"), // 
+        CROSS_JOIN("CROSS JOIN"), // 
+        NATURAL_JOIN("NATURAL JOIN"), // 
+        NATURAL_INNER_JOIN("NATURAL INNER JOIN"), // 
+        LEFT_OUTER_JOIN("LEFT JOIN"), 
+        RIGHT_OUTER_JOIN("RIGHT JOIN"),
+        FULL_OUTER_JOIN("FULL JOIN"), 
+        STRAIGHT_JOIN("STRAIGHT_JOIN");
 
+        public final String name;
+
+        JoinType(String name){
+            this.name = name;
+        }
         public static String toString(JoinType joinType) {
-            if (JOIN.equals(joinType)) return "JOIN";
-            if (INNER_JOIN.equals(joinType)) return "INNER JOIN";
-            if (CROSS_JOIN.equals(joinType)) return "CROSS JOIN";
-            if (NATURAL_JOIN.equals(joinType)) return "NATURAL JOIN";
-            if (NATURAL_INNER_JOIN.equals(joinType)) return "NATURAL INNER JOIN";
-            if (LEFT_OUTER_JOIN.equals(joinType)) return "LEFT JOIN";
-            if (RIGHT_OUTER_JOIN.equals(joinType)) return "RIGHT JOIN";
-            if (FULL_OUTER_JOIN.equals(joinType)) {
-                return "FULL JOIN";
-            }
-            if (COMMA.equals(joinType)) {
-                return ",";
-            }
-            throw new IllegalStateException("not supported join " + joinType);
+            return joinType.name;
         }
     }
 }

src/main/java/com/alibaba/druid/sql/ast/statement/SQLTableSource.java

@@ -1,5 +1,8 @@
 package com.alibaba.druid.sql.ast.statement;
 
+import java.util.List;
+
+import com.alibaba.druid.sql.ast.SQLHint;
 import com.alibaba.druid.sql.ast.SQLObject;
 
 public interface SQLTableSource extends SQLObject {
@@ -7,4 +10,6 @@ public interface SQLTableSource extends SQLObject {
     String getAlias();
 
     void setAlias(String alias);
+    
+    List<SQLHint> getHints();
 }

src/main/java/com/alibaba/druid/sql/ast/statement/SQLTableSourceImpl.java

@@ -15,6 +15,10 @@
  */
 package com.alibaba.druid.sql.ast.statement;
 
+import java.util.ArrayList;
+import java.util.List;
+
+import com.alibaba.druid.sql.ast.SQLHint;
 import com.alibaba.druid.sql.ast.SQLObjectImpl;
 
 public abstract class SQLTableSourceImpl extends SQLObjectImpl implements SQLTableSource {
@@ -23,6 +27,8 @@ public abstract class SQLTableSourceImpl extends SQLObjectImpl implements SQLTab
 
     protected String          alias;
 
+    protected List<SQLHint>   hints            = new ArrayList<SQLHint>(2);
+
     public SQLTableSourceImpl(){
 
     }
@@ -39,4 +45,13 @@ public abstract class SQLTableSourceImpl extends SQLObjectImpl implements SQLTab
     public void setAlias(String alias) {
         this.alias = alias;
     }
+
+    public List<SQLHint> getHints() {
+        return hints;
+    }
+
+    public void setHints(List<SQLHint> hints) {
+        this.hints = hints;
+    }
+
 }

src/main/java/com/alibaba/druid/sql/ast/statement/SQLUnionOperator.java

@@ -1,7 +1,7 @@
 package com.alibaba.druid.sql.ast.statement;
 
 public enum SQLUnionOperator {
-    UNION("UNION"), UNION_ALL("UNION ALL"), MINUS("MINUS"), INTERSECT("INTERSECT");
+    UNION("UNION"), UNION_ALL("UNION ALL"), MINUS("MINUS"), INTERSECT("INTERSECT"), DISTINCT("UNION DISTINCT");
 
     public final String name;
 

src/main/java/com/alibaba/druid/sql/ast/statement/SQLUnionQuery.java

@@ -15,6 +15,7 @@
  */
 package com.alibaba.druid.sql.ast.statement;
 
+import com.alibaba.druid.sql.ast.SQLOrderBy;
 import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLUnionQuery extends SQLSelectQuery {
@@ -24,6 +25,7 @@ public class SQLUnionQuery extends SQLSelectQuery {
     private SQLSelectQuery    left;
     private SQLSelectQuery    right;
     private SQLUnionOperator  operator         = SQLUnionOperator.UNION;
+    private SQLOrderBy        orderBy;
 
     public SQLUnionOperator getOperator() {
         return operator;
@@ -53,11 +55,20 @@ public class SQLUnionQuery extends SQLSelectQuery {
         this.right = right;
     }
 
+    public SQLOrderBy getOrderBy() {
+        return orderBy;
+    }
+
+    public void setOrderBy(SQLOrderBy orderBy) {
+        this.orderBy = orderBy;
+    }
+
     @Override
     protected void accept0(SQLASTVisitor visitor) {
         if (visitor.visit(this)) {
             acceptChild(visitor, left);
             acceptChild(visitor, right);
+            acceptChild(visitor, orderBy);
         }
         visitor.endVisit(this);
     }