mysql_show_indexes
Display indexes for a MySQL table to analyze query performance and optimize database structure. Specify the table name and optionally the database.
Instructions
Show indexes for a specific table
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| table | Yes | Table name to show indexes for | |
| database | No | Database name (uses current database if not specified) |
Implementation Reference
- src/index.ts:421-447 (handler)The main handler function for the 'mysql_show_indexes' tool. It validates input, constructs the full table name, executes the 'SHOW INDEX FROM <table>' SQL query using the MySQL pool, and returns the results as formatted text content.
private async handleShowIndexes(args: any) { if (!this.pool) { throw new Error("Not connected to MySQL. Use mysql_connect first."); } const { table, database } = args; if (!table) { throw new Error("Table name is required"); } const fullTableName = database ? `\`${database}\`.\`${table}\`` : `\`${table}\``; try { const [results] = await this.pool.execute(`SHOW INDEX FROM ${fullTableName}`); return { content: [ { type: "text", text: `Indexes for table '${table}':\n${JSON.stringify(results, null, 2)}`, }, ], }; } catch (error) { throw new Error(`Failed to show indexes: ${error instanceof Error ? error.message : String(error)}`); } } - src/index.ts:196-213 (registration)Tool registration in the ListTools handler, defining the name, description, and input schema for 'mysql_show_indexes'.
{ name: "mysql_show_indexes", description: "Show indexes for a specific table", inputSchema: { type: "object", properties: { table: { type: "string", description: "Table name to show indexes for", }, database: { type: "string", description: "Database name (uses current database if not specified)", }, }, required: ["table"], }, }, - src/index.ts:199-212 (schema)Input schema (JSON Schema) for the mysql_show_indexes tool, specifying required 'table' parameter and optional 'database'.
inputSchema: { type: "object", properties: { table: { type: "string", description: "Table name to show indexes for", }, database: { type: "string", description: "Database name (uses current database if not specified)", }, }, required: ["table"], }, - src/index.ts:259-260 (registration)Dispatch case in the CallToolRequest handler that routes calls to the mysql_show_indexes tool to its handler function.
case "mysql_show_indexes": return await this.handleShowIndexes(args);