You can select the character set field when creating a new database.

chat2db-client/src/components/CreateDatabase/index.tsx

@@ -1,7 +1,7 @@
 import React, { useCallback, forwardRef, ForwardedRef, useImperativeHandle, useMemo, useState, useEffect } from 'react';
 import styles from './index.less';
 import classnames from 'classnames';
-import { Form, Input, Modal } from 'antd';
+import {Form, Input, Modal, Select} from 'antd';
 import MonacoEditor, { IExportRefFunction } from '@/components/Console/MonacoEditor';
 import { v4 as uuid } from 'uuid';
 import sqlService from '@/service/sql';
@@ -15,6 +15,11 @@ interface IProps {
   executedCallback?: () => void;
 }
 
+interface IOption {
+  label: string;
+  value: string | number | null;
+}
+
 export type CreateType = 'database' | 'schema';
 
 export interface ICreateDatabaseRef {
@@ -27,8 +32,14 @@ export interface ICreateDatabase {
   comment?: string;
 }
 
+export interface IDatabaseCharsetList {
+  charsets: IOption[];
+}
+
 // 创建database不支持注释的数据库
 const noCommentDatabase = [DatabaseTypeCode.MYSQL];
+// 支持charset的数据库
+const supportCharset = [DatabaseTypeCode.MYSQL];
 
 export default forwardRef((props: IProps, ref: ForwardedRef<ICreateDatabaseRef>) => {
   const { className, curWorkspaceParams, executedCallback } = props;
@@ -41,6 +52,9 @@ export default forwardRef((props: IProps, ref: ForwardedRef<ICreateDatabaseRef>)
   );
   const [confirmLoading, setConfirmLoading] = useState(false);
   const [createType, setCreateType] = useState<CreateType>('database');
+  const [databaseCharsetList, setDatabaseCharsetList] = useState<IDatabaseCharsetList>({
+    charsets: [],
+  });
 
   useEffect(() => {
     if (!open) {
@@ -50,6 +64,33 @@ export default forwardRef((props: IProps, ref: ForwardedRef<ICreateDatabaseRef>)
     }
   }, [open]);
 
+  useEffect(() => {
+    if (curWorkspaceParams.databaseType && databaseCharsetList.charsets.length === 0) {
+      getDatabaseCharsetList();
+    }
+  }, [curWorkspaceParams])
+
+  const initialOption = {
+    label: '',
+    value: '',
+  };
+  const getDatabaseCharsetList = () => {
+    sqlService
+        .getDatabaseCharsetList(curWorkspaceParams)
+        .then((res) => {
+          const charsets = [initialOption,
+              ...(res?.charsets?.map((i) => {
+                return {
+                  label: i.charsetName,
+                  value: i.charsetName,
+                };
+              }) || [])];
+          setDatabaseCharsetList({
+            charsets,
+          });
+        });
+  }
+
   const config = useMemo(() => {
     return createType === 'database'
       ? {
@@ -143,6 +184,15 @@ export default forwardRef((props: IProps, ref: ForwardedRef<ICreateDatabaseRef>)
           <Form.Item label={i18n('common.label.name')} name={config.formName}>
             <Input autoComplete="off" />
           </Form.Item>
+          <Form.Item label={i18n('common.label.charset')} name="charset">
+            <Select
+                bordered={false}
+                placeholder="请选择字符集"
+                showSearch
+                popupMatchSelectWidth={false}
+                options={databaseCharsetList.charsets}
+            />
+          </Form.Item>
           {noCommentDatabase.includes(curWorkspaceParams.databaseType) ? null : (
             <Form.Item label={i18n('common.label.comment')} name="comment">
               <Input autoComplete="off" />

chat2db-client/src/i18n/en-us/common.ts

@@ -100,6 +100,7 @@ export default {
   'common.Button.addSchema': 'Add schema',
   'common.label.comment': 'Comment',
   'common.label.name': 'Name',
+  'common.label.charset': 'Charset',
   'common.title.create': 'Create',
   'common.title.executiveLogging': 'Executive logging',
   'common.text.executionTime': 'Affected in {1} ms',

chat2db-client/src/i18n/zh-cn/common.ts

@@ -99,6 +99,7 @@ export default {
   'common.Button.addSchema': '添加Schema',
   'common.label.comment': '备注',
   'common.label.name': '名称',
+  'common.label.charset': '字符集',
   'common.title.create': '创建',
   'common.title.executiveLogging': '执行记录',
   'common.text.executionTime': '{1}ms 执行完毕',

chat2db-client/src/service/sql.ts

@@ -301,6 +301,14 @@ const getCreateSchemaSql = createRequest<{
   schemaName?: string;
 }, {sql:string}>('/api/rdb/schema/create_schema_sql', { method: 'post' });
 
+const getDatabaseCharsetList = createRequest<{
+  dataSourceId: number;
+  databaseName: string;
+}, IDatabaseSupportField>(
+    '/api/rdb/table/table_charset',
+    { method: 'get' },
+);
+
 export default {
   getCreateSchemaSql,
   getCreateDatabaseSql,
@@ -339,4 +347,5 @@ export default {
   // exportResultTable
   getAllTableList,
   getAllFieldByTable,
+  getDatabaseCharsetList,
 };

chat2db-server/chat2db-plugins/chat2db-mysql/src/main/java/ai/chat2db/plugin/mysql/MysqlMetaData.java

@@ -297,4 +297,11 @@ public String getMetaDataName(String... names) {
     public ValueHandler getValueHandler() {
         return new MysqlValueHandler();
     }
+
+    @Override
+    public TableMeta getTableCharset(String databaseName, String schemaName, String tableName) {
+        return TableMeta.builder()
+                .charsets(MysqlCharsetEnum.getCharsets())
+                .build();
+    }
 }

chat2db-server/chat2db-server-domain/chat2db-server-domain-api/src/main/java/ai/chat2db/server/domain/api/service/TableService.java

@@ -129,4 +129,6 @@ public interface TableService {
      * @return
      */
     DataResult<Boolean> checkTableVector(TableVectorParam param);
+
+    TableMeta queryTableCharset(TypeQueryParam param);
 }

chat2db-server/chat2db-server-domain/chat2db-server-domain-core/src/main/java/ai/chat2db/server/domain/core/impl/TableServiceImpl.java

@@ -577,4 +577,20 @@ public DataResult<Boolean> checkTableVector(TableVectorParam param) {
         }
         return DataResult.of(false);
     }
+
+    @Override
+    public TableMeta queryTableCharset(TypeQueryParam param) {
+        MetaData metaSchema = Chat2DBContext.getMetaData();
+        TableMeta tableMeta = metaSchema.getTableCharset(null, null, null);
+        if (tableMeta != null) {
+            //filter primary key
+            List<IndexType> indexTypes = tableMeta.getIndexTypes();
+            if (CollectionUtils.isNotEmpty(indexTypes)) {
+                List<IndexType> types = indexTypes.stream().filter(indexType -> !"Primary".equals(indexType.getTypeName())).collect(Collectors.toList());
+                tableMeta.setIndexTypes(types);
+            }
+        }
+        return tableMeta;
+    }
+
 }

chat2db-server/chat2db-server-web/chat2db-server-web-api/src/main/java/ai/chat2db/server/web/api/controller/rdb/TableController.java

@@ -250,4 +250,17 @@ public ActionResult delete(@Valid @RequestBody TableDeleteRequest request) {
         DropParam dropParam = rdbWebConverter.tableDelete2dropParam(request);
         return tableService.drop(dropParam);
     }
+
+    /**
+     * 数据库支持的字符集
+     * @param request
+     * @return
+     */
+    @GetMapping("/table_charset")
+    public DataResult<TableMeta> tableCharset(@Valid TypeQueryRequest request) {
+        TypeQueryParam typeQueryParam = TypeQueryParam.builder().dataSourceId(request.getDataSourceId()).build();
+        TableMeta tableMeta = tableService.queryTableCharset(typeQueryParam);
+        return DataResult.of(tableMeta);
+    }
+
 }

chat2db-server/chat2db-spi/src/main/java/ai/chat2db/spi/MetaData.java

@@ -214,4 +214,5 @@ List<TableIndex> indexes(Connection connection, @NotEmpty String databaseName, S
      */
     ValueHandler getValueHandler();
 
+    TableMeta getTableCharset(String databaseName, String schemaName, String tableName);
 }

chat2db-server/chat2db-spi/src/main/java/ai/chat2db/spi/jdbc/DefaultMetaService.java

@@ -136,4 +136,9 @@ public String getMetaDataName(String... names) {
     public ValueHandler getValueHandler() {
         return new DefaultValueHandler();
     }
+
+    @Override
+    public TableMeta getTableCharset(String databaseName, String schemaName, String tableName) {
+        return null;
+    }
 }