diff --git a/sqlTranslate/.idea/workspace.xml b/sqlTranslate/.idea/workspace.xml
index 3306e3462..f7353ec4e 100644
--- a/sqlTranslate/.idea/workspace.xml
+++ b/sqlTranslate/.idea/workspace.xml
@@ -4,20 +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 ast classes of function">
+    <list default="true" id="d8d12963-4777-48e3-9669-309cf5e41d60" name="更改" comment="add function">
+      <change afterPath="$PROJECT_DIR$/src/main/java/Document/Trigger 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/Interface/ColumnType.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/Interface/DataType.java" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/src/main/java/Lexer/OracleLexer.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/Lexer/OracleLexer.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/AlterTable/AlterAddColumnNode.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/Parser/AST/AlterTable/AlterAddColumnNode.java" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/src/main/java/Parser/AST/AlterTable/AlterModifyColumnNode.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/Parser/AST/AlterTable/AlterModifyColumnNode.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" />
-      <change beforePath="$PROJECT_DIR$/src/main/java/Parser/AST/Function/FunctionColumnNode.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/Parser/AST/Function/FunctionColumnNode.java" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/src/main/java/Parser/AST/Function/FunctionNameNode.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/Parser/AST/Function/FunctionNameNode.java" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/src/main/java/Parser/AST/Function/FunctionRetDefNode.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/Parser/AST/Function/FunctionRetDefNode.java" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/src/main/java/Parser/AST/Procedure/ProcedureColumnNode.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/Parser/AST/Procedure/ProcedureColumnNode.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" />
+      <change beforePath="$PROJECT_DIR$/src/main/java/Document/Todolist" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/Document/Todolist" afterDir="false" />
     </list>
     <option name="SHOW_DIALOG" value="false" />
     <option name="HIGHLIGHT_CONFLICTS" value="true" />
@@ -115,13 +105,6 @@
       <option name="presentableId" value="Default" />
       <updated>1723106789329</updated>
     </task>
-    <task id="LOCAL-00036" summary="revise">
-      <created>1726066806993</created>
-      <option name="number" value="00036" />
-      <option name="presentableId" value="LOCAL-00036" />
-      <option name="project" value="LOCAL" />
-      <updated>1726066806993</updated>
-    </task>
     <task id="LOCAL-00037" summary="add join pattern">
       <created>1726068883795</created>
       <option name="number" value="00037" />
@@ -458,7 +441,14 @@
       <option name="project" value="LOCAL" />
       <updated>1726583392370</updated>
     </task>
-    <option name="localTasksCounter" value="85" />
+    <task id="LOCAL-00085" summary="add function">
+      <created>1726587379509</created>
+      <option name="number" value="00085" />
+      <option name="presentableId" value="LOCAL-00085" />
+      <option name="project" value="LOCAL" />
+      <updated>1726587379509</updated>
+    </task>
+    <option name="localTasksCounter" value="86" />
     <servers />
   </component>
   <component name="Vcs.Log.Tabs.Properties">
@@ -473,7 +463,6 @@
     </option>
   </component>
   <component name="VcsManagerConfiguration">
-    <MESSAGE value="add alter table parser" />
     <MESSAGE value="add alter" />
     <MESSAGE value="fix some bugs" />
     <MESSAGE value="add view document" />
@@ -498,7 +487,8 @@
     <MESSAGE value="add document of rollback, commot, execute" />
     <MESSAGE value="add document of function" />
     <MESSAGE value="add ast classes of function" />
-    <option name="LAST_COMMIT_MESSAGE" value="add ast classes of function" />
+    <MESSAGE value="add function" />
+    <option name="LAST_COMMIT_MESSAGE" value="add function" />
   </component>
   <component name="XDebuggerManager">
     <watches-manager>
diff --git a/sqlTranslate/src/main/java/Document/Todolist b/sqlTranslate/src/main/java/Document/Todolist
index d85fae2ee..ec2f584ca 100644
--- a/sqlTranslate/src/main/java/Document/Todolist
+++ b/sqlTranslate/src/main/java/Document/Todolist
@@ -13,7 +13,7 @@ Operation
  while... loop... end loop 1
  for ... in () loop end loop 1
  continue、exit 1
- return ***
+ return 1
  exception 1
  commit、rollback、execute 1
  alter table 1
@@ -22,6 +22,6 @@ Operation
 Object
  table 1
  view 1
- function ***
+ function 1
  procedure 1
- trigger ****
\ No newline at end of file
+ trigger 1
\ No newline at end of file
diff --git a/sqlTranslate/src/main/java/Document/Trigger in Oracle b/sqlTranslate/src/main/java/Document/Trigger in Oracle
new file mode 100644
index 000000000..4706ae1d2
--- /dev/null
+++ b/sqlTranslate/src/main/java/Document/Trigger in Oracle	
@@ -0,0 +1,17 @@
+CREATE OR REPLACE TRIGGER trigger_name
+BEFORE | AFTER | INSTEAD OF -- OpenGauss does not support INSTEAD OF
+{ INSERT | UPDATE | DELETE }
+ON table_name
+[REFERENCING NEW AS new OLD AS old] -- OpenGauss does not support this
+FOR EACH ROW
+WHEN (condition)
+BEGIN
+    -- trigger body
+END;
+
+Example: CREATE OR REPLACE TRIGGER log_insert
+         BEFORE INSERT ON employees
+         FOR EACH ROW
+         BEGIN
+             INSERT INTO audit_log (action, employee_id) VALUES ('INSERT', :NEW.id);
+         END;
\ No newline at end of file