import { BaseSqlExpression, SQL_IDENTIFIER } from './base-sql-expression.js';
/**
 * Do not use me directly. Use {@link sql.col}
 */
export declare class Col extends BaseSqlExpression {
    protected readonly [SQL_IDENTIFIER]: 'col';
    readonly identifiers: string[];
    constructor(...identifiers: string[]);
}
/**
 * Creates an object which represents a column in the DB, this allows referencing another column in your query.
 * This is often useful in conjunction with {@link sql.fn}, {@link sql.where} and {@link sql} which interpret strings as values and not column names.
 *
 * Col works similarly to {@link sql.identifier}, but "*" has special meaning, for backwards compatibility.
 *
 * ⚠️ We recommend using {@link sql.identifier}, or {@link sql.attribute} instead.
 *
 * @param identifiers The name of the column
 */
export declare function col(...identifiers: string[]): Col;