diff --git a/sqlTranslate/.idea/workspace.xml b/sqlTranslate/.idea/workspace.xml
index e11c9ee94..66f4221ad 100644
--- a/sqlTranslate/.idea/workspace.xml
+++ b/sqlTranslate/.idea/workspace.xml
@@ -4,13 +4,14 @@
     <option name="autoReloadType" value="SELECTIVE" />
   </component>
   <component name="ChangeListManager">
-    <list default="true" id="d8d12963-4777-48e3-9669-309cf5e41d60" name="更改" comment="refractor">
+    <list default="true" id="d8d12963-4777-48e3-9669-309cf5e41d60" name="更改" comment="add select convert rules">
+      <change afterPath="$PROJECT_DIR$/src/main/java/Document/Update statement in Oracle" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/src/main/java/Parser/AST/Update/UpdateEndNode.java" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/src/main/java/Parser/AST/Update/UpdateNode.java" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/src/main/java/Parser/AST/Update/UpdateObjNode.java" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/src/main/java/Parser/AST/Update/UpdateSetNode.java" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/src/main/java/Parser/AST/Update/UpdateWhereNode.java" 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/Lexer/Token.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/Lexer/Token.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/ASTNode.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/Parser/AST/ASTNode.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" />
     <option name="HIGHLIGHT_CONFLICTS" value="true" />
@@ -402,7 +403,14 @@
       <option name="project" value="LOCAL" />
       <updated>1726143907403</updated>
     </task>
-    <option name="localTasksCounter" value="43" />
+    <task id="LOCAL-00043" summary="add select convert rules">
+      <created>1726148093221</created>
+      <option name="number" value="00043" />
+      <option name="presentableId" value="LOCAL-00043" />
+      <option name="project" value="LOCAL" />
+      <updated>1726148093221</updated>
+    </task>
+    <option name="localTasksCounter" value="44" />
     <servers />
   </component>
   <component name="Vcs.Log.Tabs.Properties">
@@ -439,7 +447,8 @@
     <MESSAGE value="add join" />
     <MESSAGE value="add join convert rule" />
     <MESSAGE value="refractor" />
-    <option name="LAST_COMMIT_MESSAGE" value="refractor" />
+    <MESSAGE value="add select convert rules" />
+    <option name="LAST_COMMIT_MESSAGE" value="add select convert rules" />
   </component>
   <component name="XDebuggerManager">
     <watches-manager>
diff --git a/sqlTranslate/src/main/java/Document/Todolist b/sqlTranslate/src/main/java/Document/Todolist
index bc134a5ef..71210ee56 100644
--- a/sqlTranslate/src/main/java/Document/Todolist
+++ b/sqlTranslate/src/main/java/Document/Todolist
@@ -5,7 +5,7 @@ Operation
  order by 1
  union 1
  insert into 1
- update... set
+ update... set 1
  delete
  if... elsif... else... end if
  case... when... then 1
diff --git a/sqlTranslate/src/main/java/Document/Update statement in Oracle b/sqlTranslate/src/main/java/Document/Update statement in Oracle
new file mode 100644
index 000000000..121d2a591
--- /dev/null
+++ b/sqlTranslate/src/main/java/Document/Update statement in Oracle	
@@ -0,0 +1 @@
+UPDATE table_name SET column1 = value1, column2 = value2, ... WHERE condition;
\ No newline at end of file
diff --git a/sqlTranslate/src/main/java/Parser/AST/Update/UpdateEndNode.java b/sqlTranslate/src/main/java/Parser/AST/Update/UpdateEndNode.java
new file mode 100644
index 000000000..b3ce1bb9e
--- /dev/null
+++ b/sqlTranslate/src/main/java/Parser/AST/Update/UpdateEndNode.java
@@ -0,0 +1,24 @@
+package Parser.AST.Update;
+
+import Parser.AST.ASTNode;
+import Lexer.Token;
+
+import java.util.List;
+
+public class UpdateEndNode extends ASTNode {
+    public UpdateEndNode(ASTNode node) {
+        super(node);
+    }
+
+    public UpdateEndNode(List<Token> tokens) {
+        super(tokens);
+    }
+
+    @Override
+    public void visit(ASTNode node, StringBuilder queryString) {
+        queryString.append(toString());
+        for (ASTNode child : getChildren()) {
+            child.visit(child, queryString);
+        }
+    }
+}
diff --git a/sqlTranslate/src/main/java/Parser/AST/Update/UpdateNode.java b/sqlTranslate/src/main/java/Parser/AST/Update/UpdateNode.java
new file mode 100644
index 000000000..35e5274cb
--- /dev/null
+++ b/sqlTranslate/src/main/java/Parser/AST/Update/UpdateNode.java
@@ -0,0 +1,24 @@
+package Parser.AST.Update;
+
+import Parser.AST.ASTNode;
+import Lexer.Token;
+
+import java.util.List;
+
+public class UpdateNode extends ASTNode {
+    public UpdateNode(ASTNode node) {
+        super(node);
+    }
+
+    public UpdateNode(List<Token> tokens) {
+        super(tokens);
+    }
+
+    @Override
+    public void visit(ASTNode node, StringBuilder queryString) {
+        queryString.append(toString() + " ");
+        for (ASTNode child : getChildren()) {
+            child.visit(child, queryString);
+        }
+    }
+}
diff --git a/sqlTranslate/src/main/java/Parser/AST/Update/UpdateObjNode.java b/sqlTranslate/src/main/java/Parser/AST/Update/UpdateObjNode.java
new file mode 100644
index 000000000..d7492d223
--- /dev/null
+++ b/sqlTranslate/src/main/java/Parser/AST/Update/UpdateObjNode.java
@@ -0,0 +1,24 @@
+package Parser.AST.Update;
+
+import Parser.AST.ASTNode;
+import Lexer.Token;
+
+import java.util.List;
+
+public class UpdateObjNode extends ASTNode {
+    public UpdateObjNode(ASTNode node) {
+        super(node);
+    }
+
+    public UpdateObjNode(List<Token> tokens) {
+        super(tokens);
+    }
+
+    @Override
+    public void visit(ASTNode node, StringBuilder queryString) {
+        queryString.append(toString() + " ");
+        for (ASTNode child : getChildren()) {
+            child.visit(this, queryString);
+        }
+    }
+}
diff --git a/sqlTranslate/src/main/java/Parser/AST/Update/UpdateSetNode.java b/sqlTranslate/src/main/java/Parser/AST/Update/UpdateSetNode.java
new file mode 100644
index 000000000..c9ad6cb18
--- /dev/null
+++ b/sqlTranslate/src/main/java/Parser/AST/Update/UpdateSetNode.java
@@ -0,0 +1,24 @@
+package Parser.AST.Update;
+
+import Parser.AST.ASTNode;
+import Lexer.Token;
+
+import java.util.List;
+
+public class UpdateSetNode extends ASTNode {
+    public UpdateSetNode(ASTNode node) {
+        super(node);
+    }
+
+    public UpdateSetNode(List<Token> tokens) {
+        super(tokens);
+    }
+
+    @Override
+    public void visit(ASTNode node, StringBuilder queryString) {
+        queryString.append(toString() + " ");
+        for (ASTNode child : getChildren()) {
+            child.visit(this, queryString);
+        }
+    }
+}
diff --git a/sqlTranslate/src/main/java/Parser/AST/Update/UpdateWhereNode.java b/sqlTranslate/src/main/java/Parser/AST/Update/UpdateWhereNode.java
new file mode 100644
index 000000000..e9d7be47c
--- /dev/null
+++ b/sqlTranslate/src/main/java/Parser/AST/Update/UpdateWhereNode.java
@@ -0,0 +1,24 @@
+package Parser.AST.Update;
+
+import Parser.AST.ASTNode;
+import Lexer.Token;
+
+import java.util.List;
+
+public class UpdateWhereNode extends ASTNode {
+    public UpdateWhereNode(ASTNode node) {
+        super(node);
+    }
+
+    public UpdateWhereNode(List<Token> tokens) {
+        super(tokens);
+    }
+
+    @Override
+    public void visit(ASTNode node, StringBuilder queryString) {
+        queryString.append(toString() + " ");
+        for (ASTNode child : getChildren()) {
+            child.visit(child, queryString);
+        }
+    }
+}