import { type BlockExecutor } from '../orchestration-schema.js';
/**
 * @serverBlockDoc
 * {
 *   "version": 1,
 *   "functionName": "createSchema",
 *   "displayName": "创建 Postgres Schema",
 *   "category": "database",
 *   "description": "在 Postgres datasource 中创建一个 schema；已存在时不失败，并返回 exists=true。",
 *   "inputs": [
 *     { "key": "datasource", "type": "string", "required": true, "description": "数据源名称，对应 ${datasource}_DATABASE_URL，必须是 Postgres。" },
 *     { "key": "schema", "type": "string", "required": true, "description": "要创建的 schema 名称，只允许安全 SQL 标识符。" }
 *   ],
 *   "outputs": [
 *     { "key": "schema", "type": "string", "description": "最终创建或确认存在的 schema 名称。" },
 *     { "key": "created", "type": "boolean", "description": "本次调用是否新建了 schema。" },
 *     { "key": "exists", "type": "boolean", "description": "调用结束后 schema 是否存在。" }
 *   ],
 *   "errors": [
 *     { "code": "BLOCK_DATABASE_TYPE_MISSING", "description": "执行器未获得数据库类型。" },
 *     { "code": "BLOCK_DATASOURCE_UNSUPPORTED_DATABASE", "description": "datasource 不是 Postgres。" },
 *     { "code": "BLOCK_INVALID_SCHEMA", "description": "schema 为空、格式非法或使用 Postgres 保留 schema。" }
 *   ],
 *   "config": [],
 *   "runtime": [
 *     { "key": "requiresDatasource", "type": "boolean", "value": true, "description": "需要 datasource，并通过该连接执行 CREATE SCHEMA。" }
 *   ],
 *   "examples": [
 *     { "title": "创建企业免费数据库 schema", "block": { "uuid": "create_enterprise_schema", "functionName": "createSchema", "inputs": { "datasource": "MokelayFree", "schema": "e_abc123" }, "outputs": ["schema", "created", "exists"], "nextBlock": null } }
 *   ]
 * }
 */
export declare const executeCreateSchemaBlock: BlockExecutor;