import { JSONSchema7 } from 'json-schema';
import { ColumnInterface as CompactFormatColumnInterface } from '../../../../typings';
import { Datatype } from './datatype';
/**
 * Table column.
 */
export declare class Column {
    name: string;
    datatype: Datatype;
    isNullable?: boolean;
    isPrimaryKey?: boolean;
    comment?: string;
    default?: boolean | string | number | null;
    /**
     * Create Column instance from compact JSON format.
     *
     * @param json Column in compact JSON format.
     */
    static fromCompactJson(json: CompactFormatColumnInterface): Column;
    /**
     * JSON casting of this object calls this method.
     */
    toJSON(): JSONSchema7;
}