import { Connection, ConnectOptions, DbProvider, ISOLATION_LEVEL, QueryResult } from 'lubejs/core';
import { config as MssqlConfig } from '@jovercao/mssql';
import { MssqlSqlOptions } from './sqlifier';
export declare function parseMssqlConfig(options: MssqlConnectOptions): MssqlConfig;
export declare class MssqlConnection extends Connection {
    changeToSysdb(): Promise<void>;
    constructor(provider: DbProvider, options: MssqlConnectOptions);
    private _connection?;
    private _mssqlOptions?;
    readonly options: MssqlConnectOptions;
    protected doBeginTrans(isolationLevel: ISOLATION_LEVEL): Promise<void>;
    protected createSavePoint(id: number): Promise<void>;
    protected rollbackSavePoint(id: number): Promise<void>;
    protected doCommit(): Promise<void>;
    protected doRollback(): Promise<void>;
    protected doOpen(): Promise<void>;
    protected doClose(): Promise<void>;
    protected doShutdown(): void;
    /**
     * 获取数据库架构
     */
    getSchema(dbname?: string): any;
    protected doQuery(sql: string, params?: any[], batch?: boolean): Promise<QueryResult<any, any, any>>;
    protected reset(): Promise<void>;
}
export interface MssqlConnectOptions extends ConnectOptions {
    /**
     * 实例名
     */
    instance?: string;
    /**
     * 是否启用加密
     */
    encrypt?: boolean;
    /**
     * 是否使用UTC时间，默认为true
     */
    useUTC?: boolean;
    sqlOptions?: MssqlSqlOptions;
    /**
     * 开启性能优化，默认会使用 sp_executesql 来执行语句
     * 但使用过程中可能会遇到问题，比如开启事物等
     */
    optimize?: boolean;
}