diff --git a/app/src/main/java/com/coldmint/rust/pro/adapters/CodeTableAdapter.kt b/app/src/main/java/com/coldmint/rust/pro/adapters/CodeTableAdapter.kt
index cf7eec7..a4b6170 100644
--- a/app/src/main/java/com/coldmint/rust/pro/adapters/CodeTableAdapter.kt
+++ b/app/src/main/java/com/coldmint/rust/pro/adapters/CodeTableAdapter.kt
@@ -142,6 +142,11 @@ class CodeTableAdapter(
         resultView.titleView.setOnClickListener {
             GlobalMethod.copyText(context, codeInfo.translate, it)
         }
+
+        val demo = codeInfo.demo
+        resultView.demoView.isVisible = demo.isNotBlank()
+        resultView.demoView.text = demo
+
         resultView.subTitleView.text = codeInfo.code
         resultView.subTitleView.setOnClickListener {
             GlobalMethod.copyText(context, codeInfo.code, it)
@@ -156,7 +161,7 @@ class CodeTableAdapter(
             val chip = Chip(context)
             chip.text = text
             chip.setOnClickListener {
-                labelFunction?.invoke(lineNum, it,  text )
+                labelFunction?.invoke(lineNum, it, text)
             }
             resultView.chipGroup.addView(chip)
             true
diff --git a/app/src/main/res/layout/code_table_item.xml b/app/src/main/res/layout/code_table_item.xml
index 9da7c9a..cc1ddfd 100644
--- a/app/src/main/res/layout/code_table_item.xml
+++ b/app/src/main/res/layout/code_table_item.xml
@@ -32,18 +32,29 @@
         android:layout_marginTop="5dp"
         android:text="描述" />
 
+    <TextView
+        android:id="@+id/demoView"
+        android:visibility="gone"
+        android:layout_width="wrap_content"
+        style="@style/TextAppearance.Material3.BodySmall"
+        android:layout_height="wrap_content"
+        android:layout_below="@id/descriptionView"
+        android:layout_marginTop="5dp"
+        android:text="demo" />
+
     <TextView
         style="@style/TextAppearance.Material3.BodySmall"
         android:id="@+id/valueTypeView"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:layout_below="@id/descriptionView"
+        android:layout_below="@id/demoView"
         android:layout_marginTop="5dp"
         android:text="值类型" />
 
     <TextView
         android:id="@+id/versionView"
         android:layout_width="wrap_content"
+        style="@style/TextAppearance.Material3.BodySmall"
         android:layout_height="wrap_content"
         android:layout_alignBottom="@id/valueTypeView"
         android:layout_marginLeft="8dp"
diff --git a/assistantCoreLibrary/src/main/java/com/coldmint/rust/core/database/code/CodeDataBase.kt b/assistantCoreLibrary/src/main/java/com/coldmint/rust/core/database/code/CodeDataBase.kt
index 517d7fc..9464681 100644
--- a/assistantCoreLibrary/src/main/java/com/coldmint/rust/core/database/code/CodeDataBase.kt
+++ b/assistantCoreLibrary/src/main/java/com/coldmint/rust/core/database/code/CodeDataBase.kt
@@ -3,9 +3,14 @@ package com.coldmint.rust.core.database.code
 import android.content.Context
 import android.database.sqlite.SQLiteConstraintException
 import android.util.Log
+import androidx.room.AutoMigration
 import androidx.room.Database
+import androidx.room.Index
+import androidx.room.RenameColumn
+import androidx.room.RenameTable
 import androidx.room.Room
 import androidx.room.RoomDatabase
+import androidx.room.migration.AutoMigrationSpec
 import com.coldmint.rust.core.DataSet
 import com.coldmint.rust.core.dataBean.dataset.*
 import com.coldmint.rust.core.database.file.FileDataBase
@@ -20,13 +25,14 @@ import java.util.concurrent.Executors
  */
 @Database(
     entities = [ChainInspection::class, CodeInfo::class, SectionInfo::class, ValueTypeInfo::class, Version::class],
-    version = 2,
+    version = 3,
     exportSchema = false
 )
 abstract class CodeDataBase : RoomDatabase() {
     companion object {
         private var instance: CodeDataBase? = null
 
+
         fun getInstance(
             context: Context,
             name: String = "codeDataTable",
@@ -36,6 +42,7 @@ abstract class CodeDataBase : RoomDatabase() {
                 instance!!.close()
                 instance =
                     Room.databaseBuilder(context.applicationContext, CodeDataBase::class.java, name)
+                        .fallbackToDestructiveMigration()
                         .build()
                 return instance!!
             }
@@ -48,7 +55,7 @@ abstract class CodeDataBase : RoomDatabase() {
                                 context.applicationContext,
                                 CodeDataBase::class.java,
                                 name
-                            ).build()
+                            ).fallbackToDestructiveMigration().build()
                     }
                 }
             }
diff --git a/assistantCoreLibrary/src/main/java/com/coldmint/rust/core/database/code/CodeInfo.kt b/assistantCoreLibrary/src/main/java/com/coldmint/rust/core/database/code/CodeInfo.kt
index 73b9225..6dd6686 100644
--- a/assistantCoreLibrary/src/main/java/com/coldmint/rust/core/database/code/CodeInfo.kt
+++ b/assistantCoreLibrary/src/main/java/com/coldmint/rust/core/database/code/CodeInfo.kt
@@ -17,5 +17,5 @@ data class CodeInfo(
     @ColumnInfo(name = "add_version") val addVersion: Int,
     @ColumnInfo(name = "remove_version") val removeVersion: Int = 1,
     @ColumnInfo(name = "section") val section: String,
-    @ColumnInfo(name = "demo") val demo: String = "",
+    @ColumnInfo(name = "demo") val demo: String = " ",
 )
\ No newline at end of file
diff --git a/assistantCoreLibrary/src/main/java/com/coldmint/rust/core/database/file/FileDataBase.kt b/assistantCoreLibrary/src/main/java/com/coldmint/rust/core/database/file/FileDataBase.kt
index 606bf7b..bf317c0 100644
--- a/assistantCoreLibrary/src/main/java/com/coldmint/rust/core/database/file/FileDataBase.kt
+++ b/assistantCoreLibrary/src/main/java/com/coldmint/rust/core/database/file/FileDataBase.kt
@@ -35,7 +35,8 @@ abstract class FileDataBase : RoomDatabase() {
             if (openNewDataBase && instance != null) {
                 instance!!.close()
                 instance =
-                    Room.databaseBuilder(context, FileDataBase::class.java, name).build()
+                    Room.databaseBuilder(context, FileDataBase::class.java, name)
+                        .fallbackToDestructiveMigration().build()
                 return instance!!
             }
             if (instance == null) {
@@ -43,7 +44,8 @@ abstract class FileDataBase : RoomDatabase() {
                 {
                     if (instance == null) {
                         instance =
-                            Room.databaseBuilder(context, FileDataBase::class.java, name).build()
+                            Room.databaseBuilder(context, FileDataBase::class.java, name)
+                                .fallbackToDestructiveMigration().build()
                     }
                 }
             }