update_data
Modify existing records in MySQL database tables using SQL UPDATE queries to change data values.
Instructions
Updates data in a table in the MySQL database.
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| query | Yes | The SQL UPDATE query to execute. |
Implementation Reference
- src/index.ts:136-149 (registration)Tool registration in the listTools response, defining name, description, and input schema for 'update_data'.
{ name: 'update_data', description: 'Updates data in a table in the MySQL database.', inputSchema: { type: 'object', properties: { query: { type: 'string', description: 'The SQL UPDATE query to execute.', }, }, required: ['query'], }, }, - src/index.ts:193-194 (registration)Dispatch registration in the CallToolRequest handler switch statement, routing 'update_data' to its handler.
case 'update_data': return this.handleUpdateData(request, transactionId); - src/index.ts:364-414 (handler)Core handler implementation for 'update_data': validates arguments and query type, executes UPDATE on MySQL pool, returns formatted success/error response.
private async handleUpdateData(request: any, transactionId: string) { if (!isValidSqlQueryArgs(request.params.arguments)) { throw new McpError( ErrorCode.InvalidParams, 'Invalid SQL query arguments.' ); } const query = request.params.arguments.query; if (!isUpdateQuery(query)) { throw new McpError( ErrorCode.InvalidParams, 'Only UPDATE queries are allowed with update_data tool.' ); } console.error(`[${transactionId}] Executing UPDATE query: ${query}`); try { const [result] = await this.pool.query(query); console.error(`[${transactionId}] Data updated successfully`); return { content: [ { type: 'text', text: JSON.stringify({ success: true, message: 'Data updated successfully', result }, null, 2), }, ], }; } catch (error) { console.error(`[${transactionId}] Query error:`, error); if (error instanceof Error) { return { content: [ { type: 'text', text: `MySQL error: ${error.message}`, }, ], isError: true, }; } throw error; } } - src/index.ts:42-44 (helper)Helper function used by update_data handler to validate if the provided query starts with 'update'.
const isUpdateQuery = (query: string): boolean => query.trim().toLowerCase().startsWith('update');