diff --git a/sqlTranslate/.idea/workspace.xml b/sqlTranslate/.idea/workspace.xml
index 80640972..f9e6e2cd 100644
--- a/sqlTranslate/.idea/workspace.xml
+++ b/sqlTranslate/.idea/workspace.xml
@@ -4,13 +4,10 @@
     <option name="autoReloadType" value="SELECTIVE" />
   </component>
   <component name="ChangeListManager">
-    <list default="true" id="d8d12963-4777-48e3-9669-309cf5e41d60" name="更改" comment="add function">
-      <change afterPath="$PROJECT_DIR$/src/main/java/Document/DataType in Oracle" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/src/main/java/Exception/GenerateFailedException.java" afterDir="false" />
+    <list default="true" id="d8d12963-4777-48e3-9669-309cf5e41d60" name="更改" comment="coding">
+      <change afterPath="$PROJECT_DIR$/src/main/java/Document/Column constraint in Oracle" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/src/main/java/Document/Table constraint in Oracle" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/src/main/java/Generator/OpenGaussGenerator.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/Generator/OpenGaussGenerator.java" 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/AST/CreateTable/ColumnNode.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/Parser/AST/CreateTable/ColumnNode.java" afterDir="false" />
     </list>
     <option name="SHOW_DIALOG" value="false" />
     <option name="HIGHLIGHT_CONFLICTS" value="true" />
@@ -43,17 +40,17 @@
     <option name="hideEmptyMiddlePackages" value="true" />
     <option name="showLibraryContents" value="true" />
   </component>
-  <component name="PropertiesComponent">{
-  &quot;keyToString&quot;: {
-    &quot;RunOnceActivity.OpenProjectViewOnStart&quot;: &quot;true&quot;,
-    &quot;RunOnceActivity.ShowReadmeOnStart&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 name="PropertiesComponent"><![CDATA[{
+  "keyToString": {
+    "RunOnceActivity.OpenProjectViewOnStart": "true",
+    "RunOnceActivity.ShowReadmeOnStart": "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": "preferences.fileTypes"
   }
-}</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" />
@@ -220,7 +217,14 @@
       <option name="project" value="LOCAL" />
       <updated>1724487486717</updated>
     </task>
-    <option name="localTasksCounter" value="17" />
+    <task id="LOCAL-00017" summary="coding">
+      <created>1724506701566</created>
+      <option name="number" value="00017" />
+      <option name="presentableId" value="LOCAL-00017" />
+      <option name="project" value="LOCAL" />
+      <updated>1724506701566</updated>
+    </task>
+    <option name="localTasksCounter" value="18" />
     <servers />
   </component>
   <component name="Vcs.Log.Tabs.Properties">
@@ -243,7 +247,8 @@
     <MESSAGE value="revise" />
     <MESSAGE value="add parser function" />
     <MESSAGE value="add function" />
-    <option name="LAST_COMMIT_MESSAGE" value="add function" />
+    <MESSAGE value="coding" />
+    <option name="LAST_COMMIT_MESSAGE" value="coding" />
   </component>
   <component name="XDebuggerManager">
     <watches-manager>
@@ -252,4 +257,8 @@
       </configuration>
     </watches-manager>
   </component>
+  <component name="XSLT-Support.FileAssociations.UIState">
+    <expand />
+    <select />
+  </component>
 </project>
\ No newline at end of file
diff --git a/sqlTranslate/src/main/java/Document/Column constraint in Oracle b/sqlTranslate/src/main/java/Document/Column constraint in Oracle
new file mode 100644
index 00000000..4afc4c07
--- /dev/null
+++ b/sqlTranslate/src/main/java/Document/Column constraint in Oracle	
@@ -0,0 +1,18 @@
+NOT NULL
+    用于指定某列不允许为空。
+    示例：column_name VARCHAR2(50) NOT NULL
+PRIMARY KEY
+    用于指定某列为表的主键，主键列必须唯一且不能为空。
+    示例：column_name NUMBER(10) PRIMARY KEY
+UNIQUE
+    用于指定某列的值必须是唯一的，但允许为空。
+    示例：column_name VARCHAR2(50) UNIQUE
+CHECK
+    用于指定某列上的值必须满足一个条件。
+    示例：column_name NUMBER CHECK (column_name > 0)
+FOREIGN KEY
+    用于定义外键约束，外键引用另一个表的主键或唯一键。
+    示例：column_name NUMBER(10) REFERENCES other_table(other_column)
+DEFAULT
+    用于指定某列如果没有给定值时的默认值。
+    示例：column_name VARCHAR2(50) DEFAULT 'default_value'
\ No newline at end of file
diff --git a/sqlTranslate/src/main/java/Document/Table constraint in Oracle b/sqlTranslate/src/main/java/Document/Table constraint in Oracle
new file mode 100644
index 00000000..2b046205
--- /dev/null
+++ b/sqlTranslate/src/main/java/Document/Table constraint in Oracle	
@@ -0,0 +1,14 @@
+PRIMARY KEY
+    用于定义表的主键，主键列必须唯一且不能为空。
+    可以定义单个列或多个列作为复合主键。
+    示例：CONSTRAINT pk_example PRIMARY KEY (column1, column2)
+UNIQUE
+    用于定义列的唯一性约束，允许为空。
+    可以定义在单个列或多列上。
+    示例：CONSTRAINT uk_example UNIQUE (column1)
+FOREIGN KEY
+    用于定义外键约束，外键引用另一个表的主键或唯一键。
+    示例：CONSTRAINT fk_example FOREIGN KEY (column1) REFERENCES other_table(column2)
+CHECK
+    用于定义整个表的一个或多个列上的约束条件。
+    示例：CONSTRAINT chk_example CHECK (column1 > 0)
\ No newline at end of file