import { type AbstractSqlConnection, type CheckDef, type Column, type IndexDef, type DatabaseSchema, type Table, MySqlSchemaHelper } from '@mikro-orm/mysql';
import { type Dictionary, type Transaction, type Type } from '@mikro-orm/core';
/** Schema introspection helper for MariaDB. */
export declare class MariaDbSchemaHelper extends MySqlSchemaHelper {
    /**
     * MariaDB does not support inline expression indexes the way MySQL 8.0+ does, so the
     * `(CASE WHEN <pred> THEN <col> END)` emulation MikroORM uses on MySQL would error out.
     * For partial indexes on MariaDB, define a virtual generated column and index that instead.
     */
    protected getIndexColumns(index: IndexDef): string;
    protected appendMySqlIndexSuffix(sql: string, index: IndexDef): string;
    loadInformationSchema(schema: DatabaseSchema, connection: AbstractSqlConnection, tables: Table[], schemas?: string[], ctx?: Transaction): Promise<void>;
    getAllIndexes(connection: AbstractSqlConnection, tables: Table[], ctx?: Transaction): Promise<Dictionary<IndexDef[]>>;
    getAllColumns(connection: AbstractSqlConnection, tables: Table[], ctx?: Transaction): Promise<Dictionary<Column[]>>;
    getAllChecks(connection: AbstractSqlConnection, tables: Table[], ctx?: Transaction, columns?: Dictionary<Column[]>): Promise<Dictionary<CheckDef[]>>;
    protected getChecksSQL(tables: Table[]): string;
    protected wrap(val: string | undefined | null, type: Type<unknown>): string | undefined | null;
}