import type { ColumnCodec } from './column';
import type { BinaryReader } from '../protocol/binary_reader';
import type { BinaryWriter } from '../protocol/binary_writer';
export declare class StringCodec implements ColumnCodec {
    read(reader: BinaryReader, rows: number): string[];
    write(writer: BinaryWriter, values: unknown[]): void;
}
export declare class FixedStringCodec implements ColumnCodec {
    private readonly length;
    constructor(length: number);
    read(reader: BinaryReader, rows: number): string[];
    write(writer: BinaryWriter, values: unknown[]): void;
}