import { DropConstraintStatement } from "../models/DDLStatements";
import { Lexeme } from "../models/Lexeme";
/**
 * Parses standalone DROP CONSTRAINT statements.
 */
export declare class DropConstraintParser {
    static parse(sql: string): DropConstraintStatement;
    static parseFromLexeme(lexemes: Lexeme[], index: number): {
        value: DropConstraintStatement;
        newIndex: number;
    };
}