export type ColumnType = 'string' | 'number' | 'boolean' | 'date' | 'datetime' | 'null' | 'unknown';
export interface ColumnMeta {
    name: string;
    type: ColumnType;
    driverType: string;
}
export type Row = Record<string, unknown>;
export interface QueryExecutionOptions {
    signal?: AbortSignal;
    /** Maximum rows returned to the caller. Connectors must enforce this. */
    maxRows?: number;
    /** Maximum serialized bytes returned to the caller. Connectors must enforce this. */
    maxBytes?: number;
    /** Maximum rows held in one streaming batch. */
    batchSize?: number;
    /** Relative deadline for connector execution and result consumption. */
    deadlineMs?: number;
}
export interface QueryBatch {
    columns: ColumnMeta[];
    rows: Row[];
    rowCount: number;
    byteCount: number;
    queryId?: string;
    truncated?: boolean;
}
export interface QueryResult {
    columns: ColumnMeta[];
    rows: Row[];
    rowCount: number;
    executionTimeMs: number;
    queryId?: string;
    sqlState?: string;
    vendorCode?: string;
    truncated?: boolean;
    bytesRead?: number;
}
/**
 * Redacted structured connector error. Vendor fields required for diagnosis
 * survive transport without exposing SQL text, binds, or credentials.
 */
export declare class ConnectorQueryError extends Error {
    readonly driver: string;
    readonly code = "CONNECTOR_QUERY_FAILED";
    readonly vendorCode?: string;
    readonly sqlState?: string;
    readonly queryId?: string;
    readonly line?: number;
    readonly position?: number;
    readonly retryable?: boolean;
    constructor(input: {
        driver: string;
        message: string;
        vendorCode?: string;
        sqlState?: string;
        queryId?: string;
        line?: number;
        position?: number;
        retryable?: boolean;
        cause?: Error;
    });
}
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