diff --git a/sqlTranslate/.idea/workspace.xml b/sqlTranslate/.idea/workspace.xml
index c3f62bc4..34de1c72 100644
--- a/sqlTranslate/.idea/workspace.xml
+++ b/sqlTranslate/.idea/workspace.xml
@@ -6,7 +6,6 @@
   <component name="ChangeListManager">
     <list default="true" id="d8d12963-4777-48e3-9669-309cf5e41d60" name="更改" comment="add function">
       <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/src/main/java/Main.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/Main.java" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/src/main/java/Parser/OracleParser.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/Parser/OracleParser.java" afterDir="false" />
     </list>
     <option name="SHOW_DIALOG" value="false" />
@@ -40,18 +39,18 @@
     <option name="hideEmptyMiddlePackages" value="true" />
     <option name="showLibraryContents" value="true" />
   </component>
-  <component name="PropertiesComponent"><![CDATA[{
-  "keyToString": {
-    "RunOnceActivity.OpenProjectViewOnStart": "true",
-    "RunOnceActivity.ShowReadmeOnStart": "true",
-    "SHARE_PROJECT_CONFIGURATION_FILES": "true",
-    "last_opened_file_path": "F:/oracle2opengauss/examples/sqlTranslate",
-    "project.structure.last.edited": "模块",
-    "project.structure.proportion": "0.0",
-    "project.structure.side.proportion": "0.0",
-    "settings.editor.selected.configurable": "build.tools"
+  <component name="PropertiesComponent">{
+  &quot;keyToString&quot;: {
+    &quot;RunOnceActivity.OpenProjectViewOnStart&quot;: &quot;true&quot;,
+    &quot;RunOnceActivity.ShowReadmeOnStart&quot;: &quot;true&quot;,
+    &quot;SHARE_PROJECT_CONFIGURATION_FILES&quot;: &quot;true&quot;,
+    &quot;last_opened_file_path&quot;: &quot;F:/oracle2opengauss/examples/sqlTranslate&quot;,
+    &quot;project.structure.last.edited&quot;: &quot;模块&quot;,
+    &quot;project.structure.proportion&quot;: &quot;0.0&quot;,
+    &quot;project.structure.side.proportion&quot;: &quot;0.0&quot;,
+    &quot;settings.editor.selected.configurable&quot;: &quot;build.tools&quot;
   }
-}]]></component>
+}</component>
   <component name="RunManager" selected="应用程序.Main">
     <configuration name="App" type="Application" factoryName="Application" temporary="true" nameIsGenerated="true">
       <option name="MAIN_CLASS_NAME" value="org.example.App" />
@@ -190,7 +189,14 @@
       <option name="project" value="LOCAL" />
       <updated>1724419179050</updated>
     </task>
-    <option name="localTasksCounter" value="13" />
+    <task id="LOCAL-00013" summary="add function">
+      <created>1724423798948</created>
+      <option name="number" value="00013" />
+      <option name="presentableId" value="LOCAL-00013" />
+      <option name="project" value="LOCAL" />
+      <updated>1724423798948</updated>
+    </task>
+    <option name="localTasksCounter" value="14" />
     <servers />
   </component>
   <component name="Vcs.Log.Tabs.Properties">
@@ -215,4 +221,11 @@
     <MESSAGE value="add function" />
     <option name="LAST_COMMIT_MESSAGE" value="add function" />
   </component>
+  <component name="XDebuggerManager">
+    <watches-manager>
+      <configuration name="Application">
+        <watch expression="((CreateTabNode)root).tokens" custom="Parser.AST.CreateTable.CreateTabNode" />
+      </configuration>
+    </watches-manager>
+  </component>
 </project>
\ No newline at end of file
diff --git a/sqlTranslate/src/main/java/Parser/AST/ASTNode.java b/sqlTranslate/src/main/java/Parser/AST/ASTNode.java
index 4f22066b..a68223ee 100644
--- a/sqlTranslate/src/main/java/Parser/AST/ASTNode.java
+++ b/sqlTranslate/src/main/java/Parser/AST/ASTNode.java
@@ -115,4 +115,10 @@ public abstract class ASTNode {
         }
         return str;
     }
+
+    public String getASTString() {
+        String str = "";
+        // TODO: implement
+        return str;
+    }
 }
diff --git a/sqlTranslate/src/main/java/Parser/OracleParser.java b/sqlTranslate/src/main/java/Parser/OracleParser.java
index caff544f..8c3c54cb 100644
--- a/sqlTranslate/src/main/java/Parser/OracleParser.java
+++ b/sqlTranslate/src/main/java/Parser/OracleParser.java
@@ -36,10 +36,12 @@ public class OracleParser {
         List <Token> tokens = new ArrayList<>();
         tokens.add(lexer.getTokens().get(0));
         ASTNode root = new CreateTabNode(tokens);
-        ASTNode currentNode = root;
+        ASTNode currentNode = null;
         for (int i = 1; i < lexer.getTokens().size(); i++) {
+//            System.out.println("Parsing the token: " + lexer.getTokens().get(i).getValue());
             if (i == 1 && lexer.getTokens().get(i).getValue().equalsIgnoreCase("TABLE")) {
-                tokens.clear();
+                tokens = new ArrayList<>();
+
                 tokens.add(lexer.getTokens().get(i));
                 try {
                     tokens.add(lexer.getTokens().get(i + 1));
@@ -53,14 +55,14 @@ public class OracleParser {
                 currentNode = child;
             }
             else if (i == 1 && !lexer.getTokens().get(i).getValue().equalsIgnoreCase("TABLE")){
-                tokens.clear();
+                tokens = new ArrayList<>();
                 tokens.add(lexer.getTokens().get(i));
                 for (int j = i + 1; j < lexer.getTokens().size(); j++) {
                     if (lexer.getTokens().get(j).getValue().equalsIgnoreCase("TABLE")) {
                         ASTNode child = new TableTypeNode(tokens);
                         root.addChild(child);
                         currentNode = child;
-                        tokens.clear();
+                        tokens = new ArrayList<>();
                         tokens.add(lexer.getTokens().get(j));
                         try {
                             tokens.add(lexer.getTokens().get(j + 1));
@@ -80,7 +82,7 @@ public class OracleParser {
             }
             else if (lexer.getTokens().get(i).hasType(Token.TokenType.IDENTIFIER)) {
                 // Token.TokenType.IDENTIFIER ... , -> column node
-                tokens.clear();
+                tokens = new ArrayList<>();
                 ColumnNode child = new ColumnNode();
                 child.setName(lexer.getTokens().get(i));
                 tokens.add(lexer.getTokens().get(i));
@@ -136,7 +138,7 @@ public class OracleParser {
             else if (lexer.getTokens().get(i).hasType(Token.TokenType.KEYWORD)
                     && lexer.getTokens().get(i).getValue().equalsIgnoreCase("CONSTRAINT")) {
                 // Table constraint
-                tokens.clear();
+                tokens = new ArrayList<>();
                 tokens.add(lexer.getTokens().get(i));
                 for (int j = i + 1; j < lexer.getTokens().size(); j++) {
                     tokens.add(lexer.getTokens().get(j));
@@ -185,7 +187,7 @@ public class OracleParser {
 
             }
             else {
-                throw new ParseFailedException("Parse failed!");
+//                throw new ParseFailedException("Parse failed!");
             }
         }
         return root;