improve sql parser

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

@@ -19,9 +19,7 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLCommentHint extends SQLObjectImpl implements SQLHint {
 
-    private static final long serialVersionUID = 1L;
-
-    private String            text;
+    private String text;
 
     public SQLCommentHint(){
 

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

@@ -22,10 +22,8 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLDataTypeImpl extends SQLObjectImpl implements SQLDataType {
 
-    private static final long     serialVersionUID = -2783296007802532452L;
-
     protected String              name;
-    protected final List<SQLExpr> arguments        = new ArrayList<SQLExpr>();
+    protected final List<SQLExpr> arguments = new ArrayList<SQLExpr>();
 
     public SQLDataTypeImpl(){
 

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

@@ -17,8 +17,6 @@ package com.alibaba.druid.sql.ast;
 
 public abstract class SQLExprImpl extends SQLObjectImpl implements SQLExpr {
 
-    private static final long serialVersionUID = 1278977287415092601L;
-
     public SQLExprImpl(){
 
     }

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

@@ -15,16 +15,13 @@
  */
 package com.alibaba.druid.sql.ast;
 
-import java.io.Serializable;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 
 import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
-public abstract class SQLObjectImpl implements SQLObject, Serializable {
-
-    private static final long   serialVersionUID = 5569722716326763762L;
+public abstract class SQLObjectImpl implements SQLObject {
 
     private SQLObject           parent;
 

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

@@ -21,7 +21,6 @@ import java.util.List;
 import com.alibaba.druid.sql.ast.statement.SQLSelectOrderByItem;
 import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
-@SuppressWarnings("serial")
 public class SQLOrderBy extends SQLObjectImpl {
 
     protected final List<SQLSelectOrderByItem> items = new ArrayList<SQLSelectOrderByItem>();
@@ -29,8 +28,8 @@ public class SQLOrderBy extends SQLObjectImpl {
     public SQLOrderBy(){
 
     }
-    
-    public SQLOrderBy(SQLExpr expr) {
+
+    public SQLOrderBy(SQLExpr expr){
         SQLSelectOrderByItem item = new SQLSelectOrderByItem(expr);
         item.setParent(this);
         this.items.add(item);

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

@@ -22,16 +22,14 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
  */
 public class SQLOver extends SQLObjectImpl {
 
-    private static final long     serialVersionUID = 1L;
-
-    protected final List<SQLExpr> partitionBy      = new ArrayList<SQLExpr>();
+    protected final List<SQLExpr> partitionBy = new ArrayList<SQLExpr>();
     protected SQLOrderBy          orderBy;
-    
-    public SQLOver() {
-        
+
+    public SQLOver(){
+
     }
-    
-    public SQLOver(SQLOrderBy orderBy) {
+
+    public SQLOver(SQLOrderBy orderBy){
         this.setOrderBy(orderBy);
     }
 

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

@@ -20,8 +20,6 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public abstract class SQLStatementImpl extends SQLObjectImpl implements SQLStatement {
 
-    private static final long serialVersionUID = 1L;
-
     public SQLStatementImpl(){
 
     }

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

@@ -20,8 +20,6 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLAllColumnExpr extends SQLExprImpl {
 
-    private static final long serialVersionUID = 1L;
-
     public SQLAllColumnExpr(){
 
     }

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

@@ -21,8 +21,7 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLAllExpr extends SQLExprImpl {
 
-    private static final long serialVersionUID = 1L;
-    public SQLSelect          subQuery;
+    public SQLSelect subQuery;
 
     public SQLAllExpr(){
 

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

@@ -21,8 +21,7 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLAnyExpr extends SQLExprImpl {
 
-    private static final long serialVersionUID = 1L;
-    public SQLSelect          subQuery;
+    public SQLSelect subQuery;
 
     public SQLAnyExpr(){
 

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

@@ -22,10 +22,8 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLCastExpr extends SQLExprImpl {
 
-    private static final long serialVersionUID = 1L;
-
-    private SQLExpr           expr;
-    private SQLDataType       dataType;
+    private SQLExpr     expr;
+    private SQLDataType dataType;
 
     public SQLCastExpr(){
 

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

@@ -19,8 +19,6 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLCharExpr extends SQLTextLiteralExpr {
 
-    private static final long serialVersionUID = 1L;
-
     public SQLCharExpr(){
 
     }

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

@@ -21,9 +21,7 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLCurrentOfCursorExpr extends SQLExprImpl {
 
-    private static final long serialVersionUID = 1L;
-
-    private SQLName           cursorName;
+    private SQLName cursorName;
 
     public SQLCurrentOfCursorExpr(){
 

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

@@ -20,8 +20,6 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLDefaultExpr extends SQLExprImpl implements SQLLiteralExpr {
 
-    private static final long serialVersionUID = 1L;
-
     @Override
     public boolean equals(Object o) {
         return o instanceof SQLDefaultExpr;

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

@@ -21,9 +21,7 @@ import com.alibaba.druid.util.HexBin;
 
 public class SQLHexExpr extends SQLExprImpl implements SQLLiteralExpr {
 
-    private static final long serialVersionUID = 1L;
-
-    private final String      hex;
+    private final String hex;
 
     public SQLHexExpr(String hex){
         this.hex = hex;
@@ -78,7 +76,7 @@ public class SQLHexExpr extends SQLExprImpl implements SQLLiteralExpr {
         }
         return true;
     }
-    
+
     public byte[] toBytes() {
         return HexBin.decode(this.hex);
     }

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

@@ -21,11 +21,9 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLIdentifierExpr extends SQLExprImpl implements SQLName {
 
-    private static final long serialVersionUID = -4101240977289682659L;
+    private String           name;
 
-    private String            name;
-
-    private transient String  lowerName;
+    private transient String lowerName;
 
     public SQLIdentifierExpr(){
 

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

@@ -19,9 +19,7 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLIntegerExpr extends SQLNumericLiteralExpr {
 
-    private static final long serialVersionUID = 1L;
-
-    private Number            number;
+    private Number number;
 
     public SQLIntegerExpr(Number number){
 

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

@@ -24,9 +24,7 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLListExpr extends SQLExprImpl {
 
-    private static final long   serialVersionUID = 1L;
-
-    private final List<SQLExpr> items            = new ArrayList<SQLExpr>();
+    private final List<SQLExpr> items = new ArrayList<SQLExpr>();
 
     public List<SQLExpr> getItems() {
         return items;

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

@@ -19,8 +19,6 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLNCharExpr extends SQLTextLiteralExpr {
 
-    private static final long serialVersionUID = 1L;
-
     public SQLNCharExpr(){
 
     }

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

@@ -20,8 +20,6 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLNullExpr extends SQLExprImpl implements SQLLiteralExpr {
 
-    private static final long serialVersionUID = 1L;
-
     public SQLNullExpr(){
 
     }

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

@@ -19,9 +19,7 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLNumberExpr extends SQLNumericLiteralExpr {
 
-    private static final long serialVersionUID = 1L;
-
-    private Number            number;
+    private Number number;
 
     public SQLNumberExpr(){
 

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

@@ -19,13 +19,11 @@ import com.alibaba.druid.sql.ast.SQLExprImpl;
 
 public abstract class SQLNumericLiteralExpr extends SQLExprImpl implements SQLLiteralExpr {
 
-    private static final long serialVersionUID = 1L;
-
     public SQLNumericLiteralExpr(){
 
     }
 
     public abstract Number getNumber();
-    
+
     public abstract void setNumber(Number number);
 }

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

@@ -22,10 +22,8 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLPropertyExpr extends SQLExprImpl implements SQLName {
 
-    private static final long serialVersionUID = 1L;
-
-    private SQLExpr           owner;
-    private String            name;
+    private SQLExpr owner;
+    private String  name;
 
     public SQLPropertyExpr(SQLExpr owner, String name){
         setOwner(owner);
@@ -35,7 +33,7 @@ public class SQLPropertyExpr extends SQLExprImpl implements SQLName {
     public SQLPropertyExpr(){
 
     }
-    
+
     public String getSimleName() {
         return name;
     }
@@ -50,7 +48,7 @@ public class SQLPropertyExpr extends SQLExprImpl implements SQLName {
         }
         this.owner = owner;
     }
-    
+
     public String getName() {
         return this.name;
     }

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

@@ -21,8 +21,7 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLSomeExpr extends SQLExprImpl {
 
-    private static final long serialVersionUID = 1L;
-    public SQLSelect          subQuery;
+    public SQLSelect subQuery;
 
     public SQLSomeExpr(){
 

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

@@ -19,9 +19,7 @@ import com.alibaba.druid.sql.ast.SQLExprImpl;
 
 public abstract class SQLTextLiteralExpr extends SQLExprImpl implements SQLLiteralExpr {
 
-    private static final long serialVersionUID = 1L;
-
-    protected String          text;
+    protected String text;
 
     public SQLTextLiteralExpr(){
 

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

@@ -20,13 +20,11 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLVariantRefExpr extends SQLExprImpl {
 
-    private static final long serialVersionUID = 1L;
+    private String  name;
 
-    private String            name;
+    private boolean global = false;
 
-    private boolean           global           = false;
-
-    private int               index            = -1;
+    private int     index  = -1;
 
     public SQLVariantRefExpr(String name){
         this.name = name;

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

@@ -17,7 +17,6 @@ package com.alibaba.druid.sql.ast.statement;
 
 import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
-@SuppressWarnings("serial")
 public class NotNullConstraint extends SQLConstaintImpl implements SQLColumnConstraint {
 
     public NotNullConstraint(){

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

@@ -23,9 +23,7 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLAlterTableAddColumn extends SQLObjectImpl implements SQLAlterTableItem {
 
-    private static final long         serialVersionUID = 1L;
-
-    private List<SQLColumnDefinition> columns          = new ArrayList<SQLColumnDefinition>();
+    private List<SQLColumnDefinition> columns = new ArrayList<SQLColumnDefinition>();
 
     @Override
     protected void accept0(SQLASTVisitor visitor) {

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

@@ -20,14 +20,13 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLAlterTableAddForeignKey extends SQLObjectImpl implements SQLAlterTableItem {
 
-    private static final long       serialVersionUID = 1L;
     private SQLForeignKeyConstraint foreignKey;
-    
-    public SQLAlterTableAddForeignKey() {
-        
+
+    public SQLAlterTableAddForeignKey(){
+
     }
-    
-    public SQLAlterTableAddForeignKey(SQLForeignKeyConstraint foreignKey) {
+
+    public SQLAlterTableAddForeignKey(SQLForeignKeyConstraint foreignKey){
         this.foreignKey = foreignKey;
     }
 

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

@@ -24,11 +24,9 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLAlterTableAddIndex extends SQLObjectImpl implements SQLAlterTableItem {
 
-    private static final long          serialVersionUID = 1L;
-
     private SQLName                    name;
 
-    private List<SQLSelectOrderByItem> items            = new ArrayList<SQLSelectOrderByItem>();
+    private List<SQLSelectOrderByItem> items = new ArrayList<SQLSelectOrderByItem>();
 
     private String                     type;
 

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

@@ -20,8 +20,7 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLAlterTableAddPrimaryKey extends SQLObjectImpl implements SQLAlterTableItem {
 
-    private static final long serialVersionUID = 1L;
-    private SQLPrimaryKey     primaryKey;
+    private SQLPrimaryKey primaryKey;
 
     public SQLPrimaryKey getPrimaryKey() {
         return primaryKey;

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

@@ -21,8 +21,6 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLAlterTableAlterColumn extends SQLObjectImpl implements SQLAlterTableItem {
 
-    private static final long   serialVersionUID = 1L;
-
     private SQLColumnDefinition column;
 
     @Override

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

@@ -21,9 +21,7 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLAlterTableDisableConstraint extends SQLObjectImpl implements SQLAlterTableItem {
 
-    private static final long serialVersionUID = 1L;
-
-    private SQLName           constraintName;
+    private SQLName constraintName;
 
     @Override
     protected void accept0(SQLASTVisitor visitor) {
@@ -33,15 +31,12 @@ public class SQLAlterTableDisableConstraint extends SQLObjectImpl implements SQL
         visitor.endVisit(this);
     }
 
-    
     public SQLName getConstraintName() {
         return constraintName;
     }
 
-    
     public void setConstraintName(SQLName constraintName) {
         this.constraintName = constraintName;
     }
 
-    
 }

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

@@ -20,8 +20,6 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLAlterTableDisableKeys extends SQLObjectImpl implements SQLAlterTableItem {
 
-    private static final long serialVersionUID = 1L;
-
     @Override
     protected void accept0(SQLASTVisitor visitor) {
         visitor.visit(this);

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

@@ -24,8 +24,7 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLAlterTableDropColumnItem extends SQLObjectImpl implements SQLAlterTableItem {
 
-    private static final long serialVersionUID = 1L;
-    private List<SQLName>     columns          = new ArrayList<SQLName>();
+    private List<SQLName> columns = new ArrayList<SQLName>();
 
     public SQLAlterTableDropColumnItem(){
 

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

@@ -21,9 +21,7 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLAlterTableDropConstraint extends SQLObjectImpl implements SQLAlterTableItem {
 
-    private static final long serialVersionUID = 1L;
-
-    private SQLName           constraintName;
+    private SQLName constraintName;
 
     @Override
     protected void accept0(SQLASTVisitor visitor) {
@@ -33,15 +31,12 @@ public class SQLAlterTableDropConstraint extends SQLObjectImpl implements SQLAlt
         visitor.endVisit(this);
     }
 
-    
     public SQLName getConstraintName() {
         return constraintName;
     }
 
-    
     public void setConstraintName(SQLName constraintName) {
         this.constraintName = constraintName;
     }
 
-    
 }

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

@@ -21,9 +21,7 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLAlterTableDropForeinKey extends SQLObjectImpl implements SQLAlterTableItem {
 
-    private static final long serialVersionUID = 1L;
-
-    private SQLName           indexName;
+    private SQLName indexName;
 
     public SQLName getIndexName() {
         return indexName;

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

@@ -21,9 +21,7 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLAlterTableDropIndex extends SQLObjectImpl implements SQLAlterTableItem {
 
-    private static final long serialVersionUID = 1L;
-
-    private SQLName           indexName;
+    private SQLName indexName;
 
     public SQLName getIndexName() {
         return indexName;

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

@@ -20,8 +20,6 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLAlterTableDropPrimaryKey extends SQLObjectImpl implements SQLAlterTableItem {
 
-    private static final long serialVersionUID = 1L;
-
     @Override
     protected void accept0(SQLASTVisitor visitor) {
         visitor.visit(this);

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

@@ -21,9 +21,7 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLAlterTableEnableConstraint extends SQLObjectImpl implements SQLAlterTableItem {
 
-    private static final long serialVersionUID = 1L;
-
-    private SQLName           constraintName;
+    private SQLName constraintName;
 
     @Override
     protected void accept0(SQLASTVisitor visitor) {
@@ -33,15 +31,12 @@ public class SQLAlterTableEnableConstraint extends SQLObjectImpl implements SQLA
         visitor.endVisit(this);
     }
 
-    
     public SQLName getConstraintName() {
         return constraintName;
     }
 
-    
     public void setConstraintName(SQLName constraintName) {
         this.constraintName = constraintName;
     }
 
-    
 }

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

@@ -20,8 +20,6 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLAlterTableEnableKeys extends SQLObjectImpl implements SQLAlterTableItem {
 
-    private static final long serialVersionUID = 1L;
-
     @Override
     protected void accept0(SQLASTVisitor visitor) {
         visitor.visit(this);

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

@@ -21,9 +21,8 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLAlterTableRenameColumn extends SQLObjectImpl implements SQLAlterTableItem {
 
-    private static final long serialVersionUID = 1L;
-    private SQLName           column;
-    private SQLName           to;
+    private SQLName column;
+    private SQLName to;
 
     public SQLAlterTableRenameColumn(){
 

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

@@ -24,10 +24,8 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLAlterTableStatement extends SQLStatementImpl implements SQLDDLStatement {
 
-    private static final long       serialVersionUID = 1L;
-
     private SQLExprTableSource      tableSource;
-    private List<SQLAlterTableItem> items            = new ArrayList<SQLAlterTableItem>();
+    private List<SQLAlterTableItem> items = new ArrayList<SQLAlterTableItem>();
 
     public List<SQLAlterTableItem> getItems() {
         return items;
@@ -55,7 +53,7 @@ public class SQLAlterTableStatement extends SQLStatementImpl implements SQLDDLSt
     public void setName(SQLName name) {
         this.setTableSource(new SQLExprTableSource(name));
     }
-    
+
     @Override
     protected void accept0(SQLASTVisitor visitor) {
         if (visitor.visit(this)) {

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

@@ -21,10 +21,8 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLAssignItem extends SQLObjectImpl {
 
-    private static final long serialVersionUID = 1L;
-
-    private SQLExpr           target;
-    private SQLExpr           value;
+    private SQLExpr target;
+    private SQLExpr value;
 
     public SQLAssignItem(){
     }
@@ -65,4 +63,4 @@ public class SQLAssignItem extends SQLObjectImpl {
         visitor.endVisit(this);
     }
 
-}
+}

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

@@ -25,11 +25,9 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLCallStatement extends SQLStatementImpl {
 
-    private static final long   serialVersionUID = 1L;
-
     private SQLName             procedureName;
 
-    private final List<SQLExpr> parameters       = new ArrayList<SQLExpr>();
+    private final List<SQLExpr> parameters = new ArrayList<SQLExpr>();
 
     public SQLName getProcedureName() {
         return procedureName;

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

@@ -18,7 +18,6 @@ package com.alibaba.druid.sql.ast.statement;
 import com.alibaba.druid.sql.ast.SQLDataTypeImpl;
 import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
-@SuppressWarnings("serial")
 public class SQLCharactorDataType extends SQLDataTypeImpl {
 
     private String             charSetName;

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

@@ -20,15 +20,13 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLCheck extends SQLConstaintImpl implements SQLTableElement {
 
-    private static final long serialVersionUID = 1L;
+    private SQLExpr expr;
+
+    public SQLCheck(){
 
-    private SQLExpr           expr;
-    
-    public SQLCheck() {
-        
     }
-    
-    public SQLCheck(SQLExpr expr) {
+
+    public SQLCheck(SQLExpr expr){
         this.setExpr(expr);
     }
 
@@ -52,5 +50,4 @@ public class SQLCheck extends SQLConstaintImpl implements SQLTableElement {
         visitor.endVisit(this);
     }
 
-
 }

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

@@ -20,22 +20,20 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLColumnCheck extends SQLConstaintImpl implements SQLColumnConstraint {
 
-    private static final long serialVersionUID = 1L;
-    
     private SQLExpr expr;
-   
-    public SQLColumnCheck() {
-        
+
+    public SQLColumnCheck(){
+
     }
-    
-    public SQLColumnCheck(SQLExpr expr) {
+
+    public SQLColumnCheck(SQLExpr expr){
         this.setExpr(expr);
     }
-    
+
     public SQLExpr getExpr() {
         return expr;
     }
-    
+
     public void setExpr(SQLExpr expr) {
         if (expr != null) {
             expr.setParent(this);
@@ -43,7 +41,6 @@ public class SQLColumnCheck extends SQLConstaintImpl implements SQLColumnConstra
         this.expr = expr;
     }
 
-
     @Override
     protected void accept0(SQLASTVisitor visitor) {
         if (visitor.visit(this)) {

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

@@ -24,7 +24,6 @@ import com.alibaba.druid.sql.ast.SQLName;
 import com.alibaba.druid.sql.ast.SQLObjectImpl;
 import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
-@SuppressWarnings("serial")
 public class SQLColumnDefinition extends SQLObjectImpl implements SQLTableElement {
 
     protected SQLName                         name;

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

@@ -19,8 +19,6 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLColumnPrimaryKey extends SQLConstaintImpl implements SQLColumnConstraint {
 
-    private static final long serialVersionUID = 1L;
-
     @Override
     protected void accept0(SQLASTVisitor visitor) {
         if (visitor.visit(this)) {

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

@@ -22,8 +22,6 @@ 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
     }

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

@@ -18,7 +18,6 @@ package com.alibaba.druid.sql.ast.statement;
 import com.alibaba.druid.sql.ast.SQLName;
 import com.alibaba.druid.sql.ast.SQLObjectImpl;
 
-@SuppressWarnings("serial")
 public abstract class SQLConstaintImpl extends SQLObjectImpl implements SQLConstaint {
 
     private SQLName name;

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

@@ -21,16 +21,14 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLCreateDatabaseStatement extends SQLStatementImpl {
 
-    private static final long serialVersionUID = 1L;
+    private SQLName name;
 
-    private SQLName           name;
-
-    private String            characterSet;
-    private String            collate;
+    private String  characterSet;
+    private String  collate;
 
     public SQLCreateDatabaseStatement(){
     }
-    
+
     @Override
     protected void accept0(SQLASTVisitor visitor) {
         if (visitor.visit(this)) {

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

@@ -24,16 +24,11 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLCreateIndexStatement extends SQLStatementImpl implements SQLDDLStatement {
 
-    /**
-     * 
-     */
-    private static final long          serialVersionUID = 1L;
-
     private SQLName                    name;
 
     private SQLTableSource             table;
 
-    private List<SQLSelectOrderByItem> items            = new ArrayList<SQLSelectOrderByItem>();
+    private List<SQLSelectOrderByItem> items = new ArrayList<SQLSelectOrderByItem>();
 
     private String                     type;
 

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

@@ -22,7 +22,6 @@ import com.alibaba.druid.sql.ast.SQLName;
 import com.alibaba.druid.sql.ast.SQLStatementImpl;
 import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
-@SuppressWarnings("serial")
 public class SQLCreateTableStatement extends SQLStatementImpl implements SQLDDLStatement {
 
     protected Type                  type;

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

@@ -25,12 +25,11 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLCreateViewStatement extends SQLStatementImpl implements SQLDDLStatement {
 
-    private static final long     serialVersionUID = 1L;
-    private boolean               orReplace        = false;
+    private boolean               orReplace = false;
     protected SQLName             name;
     protected SQLSelect           subQuery;
 
-    protected final List<SQLExpr> columns          = new ArrayList<SQLExpr>();
+    protected final List<SQLExpr> columns   = new ArrayList<SQLExpr>();
 
     private Level                 with;
 

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

@@ -23,9 +23,8 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLDeleteStatement extends SQLStatementImpl {
 
-    private static final long serialVersionUID = 1L;
-    protected SQLTableSource  tableSource;
-    protected SQLExpr         where;
+    protected SQLTableSource tableSource;
+    protected SQLExpr        where;
 
     public SQLDeleteStatement(){
 

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

@@ -21,8 +21,6 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLDropIndexStatement extends SQLStatementImpl implements SQLDDLStatement {
 
-    private static final long  serialVersionUID = 1L;
-
     private SQLExpr            indexName;
     private SQLExprTableSource tableName;
 
@@ -41,7 +39,7 @@ public class SQLDropIndexStatement extends SQLStatementImpl implements SQLDDLSta
     public void setTableName(SQLExpr tableName) {
         this.setTableName(new SQLExprTableSource(tableName));
     }
-    
+
     public void setTableName(SQLExprTableSource tableName) {
         this.tableName = tableName;
     }

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

@@ -24,9 +24,7 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLDropTableStatement extends SQLStatementImpl implements SQLDDLStatement {
 
-    private static final long          serialVersionUID = 1L;
-
-    protected List<SQLExprTableSource> tableSources     = new ArrayList<SQLExprTableSource>();
+    protected List<SQLExprTableSource> tableSources = new ArrayList<SQLExprTableSource>();
 
     public SQLDropTableStatement(){
 
@@ -51,11 +49,11 @@ public class SQLDropTableStatement extends SQLStatementImpl implements SQLDDLSta
     public void setName(SQLName name) {
         this.addTableSource(new SQLExprTableSource(name));
     }
-    
+
     public void addTableSource(SQLName name) {
         this.addTableSource(new SQLExprTableSource(name));
     }
-    
+
     public void addTableSource(SQLExprTableSource tableSource) {
         tableSources.add(tableSource);
     }

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

@@ -24,9 +24,7 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLDropViewStatement extends SQLStatementImpl implements SQLDDLStatement {
 
-    private static final long          serialVersionUID = 1L;
-
-    protected List<SQLExprTableSource> tableSources     = new ArrayList<SQLExprTableSource>();
+    protected List<SQLExprTableSource> tableSources = new ArrayList<SQLExprTableSource>();
 
     public SQLDropViewStatement(){
 
@@ -51,11 +49,11 @@ public class SQLDropViewStatement extends SQLStatementImpl implements SQLDDLStat
     public void setName(SQLName name) {
         this.addTableSource(new SQLExprTableSource(name));
     }
-    
+
     public void addTableSource(SQLName name) {
         this.addTableSource(new SQLExprTableSource(name));
     }
-    
+
     public void addTableSource(SQLExprTableSource tableSource) {
         tableSources.add(tableSource);
     }

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

@@ -20,28 +20,27 @@ import com.alibaba.druid.sql.ast.SQLHint;
 import com.alibaba.druid.sql.ast.SQLObjectImpl;
 import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
-
-@SuppressWarnings("serial")
 public class SQLExprHint extends SQLObjectImpl implements SQLHint {
+
     private SQLExpr expr;
-    
-    public SQLExprHint() {
-        
+
+    public SQLExprHint(){
+
     }
-    
-    public SQLExprHint(SQLExpr expr) {
+
+    public SQLExprHint(SQLExpr expr){
         this.setExpr(expr);
     }
 
     public SQLExpr getExpr() {
         return expr;
     }
-    
+
     public void setExpr(SQLExpr expr) {
         if (expr != null) {
             expr.setParent(this);
         }
-        
+
         this.expr = expr;
     }
 
@@ -52,6 +51,5 @@ public class SQLExprHint extends SQLObjectImpl implements SQLHint {
         }
         visitor.endVisit(this);
     }
-    
-    
+
 }

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

@@ -20,9 +20,7 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLExprTableSource extends SQLTableSourceImpl {
 
-    private static final long serialVersionUID = 1L;
-
-    protected SQLExpr         expr;
+    protected SQLExpr expr;
 
     public SQLExprTableSource(){
 

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

@@ -22,10 +22,9 @@ import com.alibaba.druid.sql.ast.SQLName;
 
 public abstract class SQLForeignKeyImpl extends SQLConstaintImpl implements SQLForeignKeyConstraint {
 
-    private static final long serialVersionUID   = 1L;
-    private SQLName           referencedTableName;
-    private List<SQLName>     referencingColumns = new ArrayList<SQLName>();
-    private List<SQLName>     referencedColumns  = new ArrayList<SQLName>();
+    private SQLName       referencedTableName;
+    private List<SQLName> referencingColumns = new ArrayList<SQLName>();
+    private List<SQLName> referencedColumns  = new ArrayList<SQLName>();
 
     @Override
     public List<SQLName> getReferencingColumns() {

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

@@ -25,10 +25,9 @@ import com.alibaba.druid.sql.ast.statement.SQLInsertStatement.ValuesClause;
 
 public abstract class SQLInsertInto extends SQLObjectImpl {
 
-    private static final long     serialVersionUID = 1L;
     protected SQLExprTableSource  tableSource;
 
-    protected final List<SQLExpr> columns          = new ArrayList<SQLExpr>();
+    protected final List<SQLExpr> columns = new ArrayList<SQLExpr>();
     protected ValuesClause        values;
     protected SQLSelect           query;
 

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

@@ -25,8 +25,6 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLInsertStatement extends SQLInsertInto implements SQLStatement {
 
-    private static final long serialVersionUID = 1L;
-
     public SQLInsertStatement(){
 
     }
@@ -45,7 +43,6 @@ public class SQLInsertStatement extends SQLInsertInto implements SQLStatement {
 
     public static class ValuesClause extends SQLObjectImpl {
 
-        private static final long   serialVersionUID = 1L;
         private final List<SQLExpr> values;
 
         public ValuesClause(){

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

@@ -23,13 +23,11 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLJoinTableSource extends SQLTableSourceImpl {
 
-    private static final long     serialVersionUID = 1L;
-
     protected SQLTableSource      left;
     protected JoinType            joinType;
     protected SQLTableSource      right;
     protected SQLExpr             condition;
-    protected final List<SQLExpr> using            = new ArrayList<SQLExpr>();
+    protected final List<SQLExpr> using = new ArrayList<SQLExpr>();
 
     public SQLJoinTableSource(String alias){
         super(alias);

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

@@ -17,7 +17,6 @@ package com.alibaba.druid.sql.ast.statement;
 
 import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
-@SuppressWarnings("serial")
 public class SQLPrimaryKeyImpl extends SQLUnique implements SQLPrimaryKey {
 
     @Override

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

@@ -21,8 +21,7 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLReleaseSavePointStatement extends SQLStatementImpl {
 
-    private static final long serialVersionUID = 1L;
-    private SQLExpr           name;
+    private SQLExpr name;
 
     public SQLExpr getName() {
         return name;

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

@@ -21,9 +21,7 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLRollbackStatement extends SQLStatementImpl {
 
-    private static final long serialVersionUID = 1L;
-
-    private SQLName           to;
+    private SQLName to;
 
     @Override
     protected void accept0(SQLASTVisitor visitor) {

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

@@ -21,8 +21,7 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLSavePointStatement extends SQLStatementImpl {
 
-    private static final long serialVersionUID = 1L;
-    private SQLExpr           name;
+    private SQLExpr name;
 
     public SQLExpr getName() {
         return name;

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

@@ -21,8 +21,6 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLSelect extends SQLObjectImpl {
 
-    private static final long       serialVersionUID = 1L;
-
     protected SQLWithSubqueryClause withSubQuery;
     protected SQLSelectQuery        query;
     protected SQLOrderBy            orderBy;

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

@@ -24,9 +24,7 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLSelectGroupByClause extends SQLObjectImpl {
 
-    private static final long   serialVersionUID = 1L;
-
-    private final List<SQLExpr> items            = new ArrayList<SQLExpr>();
+    private final List<SQLExpr> items = new ArrayList<SQLExpr>();
     private SQLExpr             having;
 
     public SQLSelectGroupByClause(){

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

@@ -21,10 +21,8 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLSelectItem extends SQLObjectImpl {
 
-    private static final long serialVersionUID = 1L;
-
-    private SQLExpr           expr;
-    private String            alias;
+    private SQLExpr expr;
+    private String  alias;
 
     public SQLSelectItem(){
 

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

@@ -22,8 +22,6 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLSelectOrderByItem extends SQLObjectImpl {
 
-    private static final long          serialVersionUID = 1L;
-
     protected SQLExpr                  expr;
     protected String                   collate;
     protected SQLOrderingSpecification type;
@@ -31,7 +29,7 @@ public class SQLSelectOrderByItem extends SQLObjectImpl {
     public SQLSelectOrderByItem(){
 
     }
-    
+
     public SQLSelectOrderByItem(SQLExpr expr){
         this.setExpr(expr);
     }

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

@@ -19,8 +19,6 @@ import com.alibaba.druid.sql.ast.SQLObjectImpl;
 
 public abstract class SQLSelectQuery extends SQLObjectImpl {
 
-    private static final long serialVersionUID = 1L;
-
     public SQLSelectQuery(){
 
     }

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

@@ -23,10 +23,8 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLSelectQueryBlock extends SQLSelectQuery {
 
-    private static final long           serialVersionUID = 1L;
-
     protected int                       distionOption;
-    protected final List<SQLSelectItem> selectList       = new ArrayList<SQLSelectItem>();
+    protected final List<SQLSelectItem> selectList = new ArrayList<SQLSelectItem>();
 
     protected SQLTableSource            from;
     protected SQLExprTableSource        into;

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

@@ -20,9 +20,7 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLSelectStatement extends SQLStatementImpl {
 
-    private static final long serialVersionUID = 1L;
-
-    protected SQLSelect         select;
+    protected SQLSelect select;
 
     public SQLSelectStatement(){
 

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

@@ -24,14 +24,12 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLSetStatement extends SQLStatementImpl {
 
-    private static final long serialVersionUID = 1L;
-
-    private List<SQLAssignItem>        items            = new ArrayList<SQLAssignItem>();
+    private List<SQLAssignItem> items = new ArrayList<SQLAssignItem>();
 
     public SQLSetStatement(){
     }
-    
-    public SQLSetStatement(SQLExpr target, SQLExpr value) {
+
+    public SQLSetStatement(SQLExpr target, SQLExpr value){
         this.items.add(new SQLAssignItem(target, value));
     }
 

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

@@ -19,9 +19,7 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLSubqueryTableSource extends SQLTableSourceImpl {
 
-    private static final long serialVersionUID = 1L;
-
-    protected SQLSelect       select;
+    protected SQLSelect select;
 
     public SQLSubqueryTableSource(){
 

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

@@ -23,11 +23,9 @@ import com.alibaba.druid.sql.ast.SQLObjectImpl;
 
 public abstract class SQLTableSourceImpl extends SQLObjectImpl implements SQLTableSource {
 
-    private static final long serialVersionUID = 1L;
+    protected String        alias;
 
-    protected String          alias;
-
-    protected List<SQLHint>   hints;
+    protected List<SQLHint> hints;
 
     public SQLTableSourceImpl(){
 
@@ -45,12 +43,12 @@ public abstract class SQLTableSourceImpl extends SQLObjectImpl implements SQLTab
     public void setAlias(String alias) {
         this.alias = alias;
     }
-    
+
     public int getHintsSize() {
         if (hints == null) {
             return 0;
         }
-        
+
         return hints.size();
     }
 

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

@@ -24,8 +24,7 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLTruncateStatement extends SQLStatementImpl {
 
-    private static final long          serialVersionUID = 1L;
-    protected List<SQLExprTableSource> tableSources     = new ArrayList<SQLExprTableSource>(2);
+    protected List<SQLExprTableSource> tableSources = new ArrayList<SQLExprTableSource>(2);
 
     public List<SQLExprTableSource> getTableSources() {
         return tableSources;
@@ -34,7 +33,7 @@ public class SQLTruncateStatement extends SQLStatementImpl {
     public void setTableSources(List<SQLExprTableSource> tableSources) {
         this.tableSources = tableSources;
     }
-    
+
     public void addTableSource(SQLName name) {
         SQLExprTableSource tableSource = new SQLExprTableSource(name);
         tableSource.setParent(this);

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

@@ -20,12 +20,10 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLUnionQuery extends SQLSelectQuery {
 
-    private static final long serialVersionUID = 1L;
-
-    private SQLSelectQuery    left;
-    private SQLSelectQuery    right;
-    private SQLUnionOperator  operator         = SQLUnionOperator.UNION;
-    private SQLOrderBy        orderBy;
+    private SQLSelectQuery   left;
+    private SQLSelectQuery   right;
+    private SQLUnionOperator operator = SQLUnionOperator.UNION;
+    private SQLOrderBy       orderBy;
 
     public SQLUnionOperator getOperator() {
         return operator;

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

@@ -21,7 +21,6 @@ import java.util.List;
 import com.alibaba.druid.sql.ast.SQLExpr;
 import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
-@SuppressWarnings("serial")
 public class SQLUnique extends SQLConstaintImpl implements SQLUniqueConstraint, SQLTableElement {
 
     private final List<SQLExpr> columns = new ArrayList<SQLExpr>();

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

@@ -21,10 +21,8 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLUpdateSetItem extends SQLObjectImpl {
 
-    private static final long serialVersionUID = 1L;
-
-    private SQLExpr           column;
-    private SQLExpr           value;
+    private SQLExpr column;
+    private SQLExpr value;
 
     public SQLUpdateSetItem(){
 

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

@@ -25,9 +25,7 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLUpdateStatement extends SQLStatementImpl {
 
-    private static final long            serialVersionUID = 1L;
-
-    protected final List<SQLUpdateSetItem> items            = new ArrayList<SQLUpdateSetItem>();
+    protected final List<SQLUpdateSetItem> items = new ArrayList<SQLUpdateSetItem>();
     protected SQLExpr                      where;
 
     protected SQLTableSource               tableSource;
@@ -39,7 +37,7 @@ public class SQLUpdateStatement extends SQLStatementImpl {
     public SQLTableSource getTableSource() {
         return tableSource;
     }
-    
+
     public void setTableSource(SQLExpr expr) {
         this.setTableSource(new SQLExprTableSource(expr));
     }

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

@@ -22,8 +22,7 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLUseStatement extends SQLStatementImpl implements SQLStatement {
 
-    private static final long serialVersionUID = 1L;
-    private SQLName           database;
+    private SQLName database;
 
     public SQLName getDatabase() {
         return database;

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

@@ -25,10 +25,8 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class SQLWithSubqueryClause extends SQLObjectImpl {
 
-    private static final long serialVersionUID = 1L;
-
     private Boolean           recursive;
-    private final List<Entry> entries          = new ArrayList<Entry>();
+    private final List<Entry> entries = new ArrayList<Entry>();
 
     public List<Entry> getEntries() {
         return entries;
@@ -52,10 +50,9 @@ public class SQLWithSubqueryClause extends SQLObjectImpl {
 
     public static class Entry extends SQLObjectImpl {
 
-        private static final long     serialVersionUID = 1L;
         protected SQLIdentifierExpr   name;
-        protected final List<SQLName> columns          = new ArrayList<SQLName>();
-        protected SQLSelect      subQuery;
+        protected final List<SQLName> columns = new ArrayList<SQLName>();
+        protected SQLSelect           subQuery;
 
         @Override
         protected void accept0(SQLASTVisitor visitor) {

src/main/java/com/alibaba/druid/sql/dialect/db2/ast/stmt/DB2SelectQueryBlock.java

@@ -23,9 +23,7 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class DB2SelectQueryBlock extends SQLSelectQueryBlock implements DB2Object {
 
-    private SQLExpr           first;
-
-    private static final long serialVersionUID = 1L;
+    private SQLExpr first;
 
     public SQLExpr getFirst() {
         return first;
@@ -34,8 +32,7 @@ public class DB2SelectQueryBlock extends SQLSelectQueryBlock implements DB2Objec
     public void setFirst(SQLExpr first) {
         this.first = first;
     }
-    
-    
+
     @Override
     protected void accept0(SQLASTVisitor visitor) {
         if (visitor instanceof DB2ASTVisitor) {

src/main/java/com/alibaba/druid/sql/dialect/mysql/ast/MySqlForceIndexHint.java

@@ -19,8 +19,6 @@ import com.alibaba.druid.sql.dialect.mysql.visitor.MySqlASTVisitor;
 
 public class MySqlForceIndexHint extends MySqlIndexHintImpl {
 
-    private static final long serialVersionUID = 1L;
-
     @Override
     public void accept0(MySqlASTVisitor visitor) {
         if (visitor.visit(this)) {

src/main/java/com/alibaba/druid/sql/dialect/mysql/ast/MySqlForeignKey.java

@@ -23,8 +23,6 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class MySqlForeignKey extends SQLForeignKeyImpl implements SQLForeignKeyConstraint, SQLTableElement {
 
-    private static final long serialVersionUID = 1L;
-
     @Override
     protected void accept0(SQLASTVisitor visitor) {
         if (visitor instanceof MySqlASTVisitor) {

src/main/java/com/alibaba/druid/sql/dialect/mysql/ast/MySqlIgnoreIndexHint.java

@@ -19,8 +19,6 @@ import com.alibaba.druid.sql.dialect.mysql.visitor.MySqlASTVisitor;
 
 public class MySqlIgnoreIndexHint extends MySqlIndexHintImpl {
 
-    private static final long serialVersionUID = 1L;
-
     @Override
     public void accept0(MySqlASTVisitor visitor) {
         if (visitor.visit(this)) {

src/main/java/com/alibaba/druid/sql/dialect/mysql/ast/MySqlIndexHintImpl.java

@@ -23,11 +23,9 @@ import com.alibaba.druid.sql.dialect.mysql.visitor.MySqlASTVisitor;
 
 public abstract class MySqlIndexHintImpl extends MySqlObjectImpl implements MySqlIndexHint {
 
-    private static final long     serialVersionUID = 1L;
-
     private MySqlIndexHint.Option option;
 
-    private List<SQLName>         indexList        = new ArrayList<SQLName>();
+    private List<SQLName>         indexList = new ArrayList<SQLName>();
 
     @Override
     public abstract void accept0(MySqlASTVisitor visitor);

src/main/java/com/alibaba/druid/sql/dialect/mysql/ast/MySqlKey.java

@@ -21,7 +21,6 @@ import com.alibaba.druid.sql.ast.statement.SQLUniqueConstraint;
 import com.alibaba.druid.sql.dialect.mysql.visitor.MySqlASTVisitor;
 import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
-@SuppressWarnings("serial")
 public class MySqlKey extends SQLUnique implements SQLUniqueConstraint, SQLTableConstaint {
 
     private String indexType;

src/main/java/com/alibaba/druid/sql/dialect/mysql/ast/MySqlObjectImpl.java

@@ -21,8 +21,6 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public abstract class MySqlObjectImpl extends SQLObjectImpl implements MySqlObject {
 
-    private static final long serialVersionUID = 1L;
-
     @Override
     protected void accept0(SQLASTVisitor visitor) {
         if (visitor instanceof MySqlASTVisitor) {

src/main/java/com/alibaba/druid/sql/dialect/mysql/ast/MySqlPrimaryKey.java

@@ -18,7 +18,6 @@ package com.alibaba.druid.sql.dialect.mysql.ast;
 import com.alibaba.druid.sql.ast.statement.SQLPrimaryKey;
 import com.alibaba.druid.sql.dialect.mysql.visitor.MySqlASTVisitor;
 
-@SuppressWarnings("serial")
 public class MySqlPrimaryKey extends MySqlKey implements SQLPrimaryKey {
 
     public MySqlPrimaryKey(){

src/main/java/com/alibaba/druid/sql/dialect/mysql/ast/MySqlUnique.java

@@ -18,7 +18,6 @@ package com.alibaba.druid.sql.dialect.mysql.ast;
 import com.alibaba.druid.sql.ast.statement.SQLPrimaryKey;
 import com.alibaba.druid.sql.dialect.mysql.visitor.MySqlASTVisitor;
 
-@SuppressWarnings("serial")
 public class MySqlUnique extends MySqlKey implements SQLPrimaryKey {
 
     public MySqlUnique(){

src/main/java/com/alibaba/druid/sql/dialect/mysql/ast/MySqlUseIndexHint.java

@@ -19,8 +19,6 @@ import com.alibaba.druid.sql.dialect.mysql.visitor.MySqlASTVisitor;
 
 public class MySqlUseIndexHint extends MySqlIndexHintImpl {
 
-    private static final long serialVersionUID = 1L;
-
     @Override
     public void accept0(MySqlASTVisitor visitor) {
         if (visitor.visit(this)) {

src/main/java/com/alibaba/druid/sql/dialect/mysql/ast/expr/MySqlBinaryExpr.java

@@ -21,9 +21,7 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class MySqlBinaryExpr extends MySqlExprImpl implements MySqlExpr, SQLLiteralExpr {
 
-    private static final long serialVersionUID = 1L;
-
-    private String            value;
+    private String value;
 
     public MySqlBinaryExpr(){
 

src/main/java/com/alibaba/druid/sql/dialect/mysql/ast/expr/MySqlBooleanExpr.java

@@ -21,9 +21,7 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class MySqlBooleanExpr extends MySqlExprImpl implements MySqlExpr, SQLLiteralExpr {
 
-    private static final long serialVersionUID = 1L;
-
-    private boolean           value;
+    private boolean value;
 
     public MySqlBooleanExpr(){
 

src/main/java/com/alibaba/druid/sql/dialect/mysql/ast/expr/MySqlCharExpr.java

@@ -21,10 +21,8 @@ import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 public class MySqlCharExpr extends SQLCharExpr implements MySqlExpr {
 
-    private static final long serialVersionUID = 1L;
-
-    private String            charset;
-    private String            collate;
+    private String charset;
+    private String collate;
 
     public MySqlCharExpr(){
 
@@ -63,7 +61,7 @@ public class MySqlCharExpr extends SQLCharExpr implements MySqlExpr {
             buf.append(collate);
         }
     }
-    
+
     @Override
     protected void accept0(SQLASTVisitor visitor) {
         if (visitor instanceof MySqlASTVisitor) {