diff --git a/sqlTranslate/.idea/workspace.xml b/sqlTranslate/.idea/workspace.xml
index 84a3005ad..faadf6cbe 100644
--- a/sqlTranslate/.idea/workspace.xml
+++ b/sqlTranslate/.idea/workspace.xml
@@ -4,8 +4,8 @@
     <option name="autoReloadType" value="SELECTIVE" />
   </component>
   <component name="ChangeListManager">
-    <list default="true" id="d8d12963-4777-48e3-9669-309cf5e41d60" name="更改" comment="add alter table ast class">
-      <change beforePath="$PROJECT_DIR$/src/main/java/Lexer/OracleLexer.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/Lexer/OracleLexer.java" afterDir="false" />
+    <list default="true" id="d8d12963-4777-48e3-9669-309cf5e41d60" name="更改" comment="add alter table parser">
+      <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
     </list>
     <option name="SHOW_DIALOG" value="false" />
     <option name="HIGHLIGHT_CONFLICTS" value="true" />
@@ -103,20 +103,6 @@
       <option name="presentableId" value="Default" />
       <updated>1723106789329</updated>
     </task>
-    <task id="LOCAL-00001" summary="init">
-      <created>1723106890550</created>
-      <option name="number" value="00001" />
-      <option name="presentableId" value="LOCAL-00001" />
-      <option name="project" value="LOCAL" />
-      <updated>1723106890550</updated>
-    </task>
-    <task id="LOCAL-00002" summary="lexer">
-      <created>1723818930161</created>
-      <option name="number" value="00002" />
-      <option name="presentableId" value="LOCAL-00002" />
-      <option name="project" value="LOCAL" />
-      <updated>1723818930161</updated>
-    </task>
     <task id="LOCAL-00003" summary="AST node">
       <created>1723871742424</created>
       <option name="number" value="00003" />
@@ -446,7 +432,21 @@
       <option name="project" value="LOCAL" />
       <updated>1726153977485</updated>
     </task>
-    <option name="localTasksCounter" value="50" />
+    <task id="LOCAL-00050" summary="add alter table keywords">
+      <created>1726154243358</created>
+      <option name="number" value="00050" />
+      <option name="presentableId" value="LOCAL-00050" />
+      <option name="project" value="LOCAL" />
+      <updated>1726154243360</updated>
+    </task>
+    <task id="LOCAL-00051" summary="add alter table parser">
+      <created>1726154479052</created>
+      <option name="number" value="00051" />
+      <option name="presentableId" value="LOCAL-00051" />
+      <option name="project" value="LOCAL" />
+      <updated>1726154479052</updated>
+    </task>
+    <option name="localTasksCounter" value="52" />
     <servers />
   </component>
   <component name="Vcs.Log.Tabs.Properties">
@@ -461,8 +461,6 @@
     </option>
   </component>
   <component name="VcsManagerConfiguration">
-    <MESSAGE value="add functions" />
-    <MESSAGE value="add parser function" />
     <MESSAGE value="add function" />
     <MESSAGE value="coding" />
     <MESSAGE value="finish the framework of sqltranslate (createTab sql is now being supported!)" />
@@ -486,7 +484,9 @@
     <MESSAGE value="add Delete" />
     <MESSAGE value="add alter table grammar document" />
     <MESSAGE value="add alter table ast class" />
-    <option name="LAST_COMMIT_MESSAGE" value="add alter table ast class" />
+    <MESSAGE value="add alter table keywords" />
+    <MESSAGE value="add alter table parser" />
+    <option name="LAST_COMMIT_MESSAGE" value="add alter table parser" />
   </component>
   <component name="XDebuggerManager">
     <watches-manager>
diff --git a/sqlTranslate/src/main/java/Document/Column constraint in Oracle b/sqlTranslate/src/main/java/Document/Column constraint in Oracle
deleted file mode 100644
index 4afc4c079..000000000
--- a/sqlTranslate/src/main/java/Document/Column constraint in Oracle	
+++ /dev/null
@@ -1,18 +0,0 @@
-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
deleted file mode 100644
index 2b0462051..000000000
--- a/sqlTranslate/src/main/java/Document/Table constraint in Oracle	
+++ /dev/null
@@ -1,14 +0,0 @@
-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
diff --git a/sqlTranslate/src/main/java/Parser/OracleParser.java b/sqlTranslate/src/main/java/Parser/OracleParser.java
index fe7919f4a..84e816e13 100644
--- a/sqlTranslate/src/main/java/Parser/OracleParser.java
+++ b/sqlTranslate/src/main/java/Parser/OracleParser.java
@@ -73,7 +73,7 @@ public class OracleParser {
     }
 
     /**
-     * CREATE TEMPORARY? TABLE _table ( _column _type [, _column _type]... ) [CONSTRAINT _constraint] [, _column _type [, _column _type]...]
+     * CREATE TEMPORARY? TABLE _table ( (_column _type column_constraint), (_column _type column_constraint)* table_constraint?)
      */
     private ASTNode parseCreateTab(List<Token> parseTokens) {
         List <Token> tokens = new ArrayList<>();