diff --git a/packages/tools/src/SqlDumper.ts b/packages/tools/src/SqlDumper.ts
index ec45907a8..82e0eac49 100644
--- a/packages/tools/src/SqlDumper.ts
+++ b/packages/tools/src/SqlDumper.ts
@@ -246,7 +246,7 @@ export class SqlDumper implements AlterProcessor {
 
     this.putRaw(' ');
     this.specialColumnOptions(column);
-    if (includeNullable) {
+    if (includeNullable && !this.dialect?.specificNotNull) {
       this.put(column.notNull ? '^not ^null' : '^null');
     }
     if (includeDefault && column.defaultValue?.trim()) {
diff --git a/packages/types/dbinfo.d.ts b/packages/types/dbinfo.d.ts
index 4ee4ac41d..ffa25dd6f 100644
--- a/packages/types/dbinfo.d.ts
+++ b/packages/types/dbinfo.d.ts
@@ -49,6 +49,7 @@ export interface ColumnInfo extends NamedObjectInfo {
   notNull?: boolean;
   autoIncrement?: boolean;
   dataType: string;
+  displayedDataType?: string;
   precision?: number;
   scale?: number;
   length?: number;
diff --git a/packages/types/dialect.d.ts b/packages/types/dialect.d.ts
index 2173a9cbe..654bf9539 100644
--- a/packages/types/dialect.d.ts
+++ b/packages/types/dialect.d.ts
@@ -34,6 +34,8 @@ export interface SqlDialect {
   createCheck?: boolean;
   dropCheck?: boolean;
 
+  specificNotNull?: boolean;
+
   // syntax for create column: ALTER TABLE table ADD COLUMN column
   createColumnWithColumnKeyword?: boolean;
 
diff --git a/packages/web/src/appobj/ColumnAppObject.svelte b/packages/web/src/appobj/ColumnAppObject.svelte
index 8ee9f79db..37aa9b6f9 100644
--- a/packages/web/src/appobj/ColumnAppObject.svelte
+++ b/packages/web/src/appobj/ColumnAppObject.svelte
@@ -31,7 +31,7 @@
     return [
       { text: 'Rename column', onClick: handleRenameColumn },
       { text: 'Drop column', onClick: handleDropColumn },
-      { text: 'Copy name', onClick: () => navigator.clipboard.writeText(data.columnName)},
+      { text: 'Copy name', onClick: () => navigator.clipboard.writeText(data.columnName) },
     ];
   }
 
diff --git a/packages/web/src/datagrid/ColumnHeaderControl.svelte b/packages/web/src/datagrid/ColumnHeaderControl.svelte
index 9e367a0fa..6083c680d 100644
--- a/packages/web/src/datagrid/ColumnHeaderControl.svelte
+++ b/packages/web/src/datagrid/ColumnHeaderControl.svelte
@@ -88,9 +88,9 @@
     {/if}
     <ColumnLabel {...column} />
 
-    {#if _.isString(column.dataType) && !order}
+    {#if _.isString(column.displayedDataType || column.dataType) && !order}
       <span class="data-type" title={column.dataType}>
-        {column.dataType.toLowerCase()}
+        {(column.displayedDataType || column.dataType).toLowerCase()}
       </span>
     {/if}
   </div>
diff --git a/packages/web/src/designer/ColumnLine.svelte b/packages/web/src/designer/ColumnLine.svelte
index 7128ff89c..26065169d 100644
--- a/packages/web/src/designer/ColumnLine.svelte
+++ b/packages/web/src/designer/ColumnLine.svelte
@@ -196,7 +196,7 @@
     <div class="space" />
     {#if designer?.style?.showDataType && column?.dataType}
       <div class="ml-2">
-        {column?.dataType.toLowerCase()}
+        {(column?.displayedDataType || column?.dataType).toLowerCase()}
       </div>
     {/if}
     {#if designer?.style?.showNullability}
diff --git a/packages/web/src/elements/ColumnLabel.svelte b/packages/web/src/elements/ColumnLabel.svelte
index ffb77ba86..14d74c972 100644
--- a/packages/web/src/elements/ColumnLabel.svelte
+++ b/packages/web/src/elements/ColumnLabel.svelte
@@ -19,6 +19,7 @@
   export let columnName = '';
   export let extInfo = null;
   export let dataType = null;
+  export let displayedDataType = null;
   export let showDataType = false;
   export let foreignKey;
   export let conid = undefined;
@@ -59,7 +60,7 @@
         {/if}
       </span>
     {:else if dataType}
-      <span class="extinfo">{dataType.toLowerCase()}</span>
+      <span class="extinfo">{(displayedDataType || dataType).toLowerCase()}</span>
     {/if}
   {/if}
 </span>
diff --git a/packages/web/src/tableeditor/ColumnEditorModal.svelte b/packages/web/src/tableeditor/ColumnEditorModal.svelte
index 3411f40ca..5d7a4ffc6 100644
--- a/packages/web/src/tableeditor/ColumnEditorModal.svelte
+++ b/packages/web/src/tableeditor/ColumnEditorModal.svelte
@@ -32,7 +32,9 @@
     <FormTextField name="columnName" label="Column name" focused disabled={isReadOnly} />
     <DataTypeEditor dialect={driver?.dialect} disabled={isReadOnly} />
 
-    <FormCheckboxField name="notNull" label="NOT NULL" disabled={isReadOnly} />
+    {#if !driver?.dialect?.specificNotNull}
+      <FormCheckboxField name="notNull" label="NOT NULL" disabled={isReadOnly} />
+    {/if}
     <FormCheckboxField name="isPrimaryKey" label="Is Primary Key" disabled={isReadOnly} />
     <FormCheckboxField name="autoIncrement" label="Is Autoincrement" disabled={isReadOnly} />
     <FormTextField
diff --git a/packages/web/src/tableeditor/TableEditor.svelte b/packages/web/src/tableeditor/TableEditor.svelte
index 953ec9cf9..e330e79df 100644
--- a/packages/web/src/tableeditor/TableEditor.svelte
+++ b/packages/web/src/tableeditor/TableEditor.svelte
@@ -187,7 +187,7 @@
     on:clickrow={e => showModal(ColumnEditorModal, { columnInfo: e.detail, tableInfo, setTableInfo, driver })}
     onAddNew={isWritable ? addColumn : null}
     columns={[
-      {
+      !driver?.dialect?.specificNotNull && {
         fieldName: 'notNull',
         header: 'Nullability',
         sortable: true,
diff --git a/plugins/dbgate-plugin-clickhouse/src/backend/Analyser.js b/plugins/dbgate-plugin-clickhouse/src/backend/Analyser.js
index 91118d28e..662c09dcd 100644
--- a/plugins/dbgate-plugin-clickhouse/src/backend/Analyser.js
+++ b/plugins/dbgate-plugin-clickhouse/src/backend/Analyser.js
@@ -4,9 +4,10 @@ const sql = require('./sql');
 function extractDataType(dataType) {
   if (!dataType) return {};
   if (dataType.startsWith('Nullable(')) {
-    dataType = dataType.substring('Nullable('.length, dataType.length - 1);
+    const displayedDataType = dataType.substring('Nullable('.length, dataType.length - 1);
     return {
       dataType,
+      displayedDataType,
       notNull: false,
     };
   }
diff --git a/plugins/dbgate-plugin-clickhouse/src/frontend/driver.js b/plugins/dbgate-plugin-clickhouse/src/frontend/driver.js
index d0364ce43..3fa0f61ee 100644
--- a/plugins/dbgate-plugin-clickhouse/src/frontend/driver.js
+++ b/plugins/dbgate-plugin-clickhouse/src/frontend/driver.js
@@ -64,6 +64,7 @@ const dialect = {
   dropIndex: true,
   anonymousPrimaryKey: true,
   createColumnWithColumnKeyword: true,
+  specificNotNull: true,
 
   columnProperties: {
     columnComment: true,