bug fixed for oracle sql parser

src/main/java/com/alibaba/druid/sql/ast/expr/SQLUnaryOperator.java

@@ -16,7 +16,7 @@
 package com.alibaba.druid.sql.ast.expr;
 
 public enum SQLUnaryOperator {
-    Plus("+"), Negative("-"), Not("!"), Compl("~"), Prior("PRIOR"), ConnectByRoot("CONNECT BY");
+    Plus("+"), Negative("-"), Not("!"), Compl("~"), Prior("PRIOR"), ConnectByRoot("CONNECT BY"), NOT("NOT");
 
     public final String name;
 

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

@@ -0,0 +1,53 @@
+package com.alibaba.druid.sql.ast.statement;
+
+import com.alibaba.druid.sql.ast.SQLExpr;
+import com.alibaba.druid.sql.ast.SQLObjectImpl;
+import com.alibaba.druid.sql.ast.SQLStatement;
+import com.alibaba.druid.sql.visitor.SQLASTVisitor;
+
+public class SQLCommentStatement extends SQLObjectImpl implements SQLStatement {
+
+    private static final long serialVersionUID = 1L;
+
+    public static enum Type {
+        TABLE, COLUMN
+    }
+
+    private SQLExpr on;
+    private Type    type;
+    private SQLExpr comment;
+
+    public SQLExpr getComment() {
+        return comment;
+    }
+
+    public void setComment(SQLExpr comment) {
+        this.comment = comment;
+    }
+
+    public Type getType() {
+        return type;
+    }
+
+    public void setType(Type type) {
+        this.type = type;
+    }
+
+    public SQLExpr getOn() {
+        return on;
+    }
+
+    public void setOn(SQLExpr on) {
+        this.on = on;
+    }
+
+    @Override
+    protected void accept0(SQLASTVisitor visitor) {
+        if (visitor.visit(this)) {
+            acceptChild(visitor, on);
+            acceptChild(visitor, comment);
+        }
+        visitor.endVisit(this);
+    }
+
+}

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

@@ -16,7 +16,6 @@
 package com.alibaba.druid.sql.ast.statement;
 
 import com.alibaba.druid.sql.ast.SQLExpr;
-import com.alibaba.druid.sql.ast.SQLName;
 import com.alibaba.druid.sql.ast.SQLObjectImpl;
 import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
@@ -24,18 +23,18 @@ public class SQLUpdateSetItem extends SQLObjectImpl {
 
     private static final long serialVersionUID = 1L;
 
-    private SQLName           column;
+    private SQLExpr           column;
     private SQLExpr           value;
 
     public SQLUpdateSetItem(){
 
     }
 
-    public SQLName getColumn() {
+    public SQLExpr getColumn() {
         return column;
     }
 
-    public void setColumn(SQLName column) {
+    public void setColumn(SQLExpr column) {
         this.column = column;
     }