import type { Schema } from "../../schema/Schema.js";
import type { Data } from "../../util/data.js";
import type { Collection, Collections } from "../collection/Collection.js";
import type { SQLProvider } from "../provider/SQLProvider.js";
import { DBMigrator } from "./DBMigrator.js";
/** Column definition in a live SQL table. */
export type SQLTableColumn = {
    readonly name: string;
    readonly statement: string;
};
/** Existing SQL table schema keyed by column name. */
export type SQLTable = {
    readonly columns: Readonly<Record<string, SQLTableColumn>>;
    readonly name: string;
    readonly sql?: string | undefined;
};
/** Generated SQL column mapped from a collection path. */
export type SQLColumn = {
    readonly column: string;
    readonly key: string;
    readonly path: string;
};
/** Shared SQL migration logic based on schema diffing. */
export declare abstract class SQLMigrator<T extends SQLProvider = SQLProvider> extends DBMigrator<T> {
    migrate(...collections: Collections<number>): Promise<void>;
    getMigrations(...collections: Collections<number>): Promise<readonly string[]>;
    getCreateTableQuery<T extends Data>(collection: Collection<string, number, T>): string;
    getCreateTableColumns<T extends Data>(collection: Collection<string, number, T>): readonly SQLTableColumn[];
    getGeneratedTableColumns<T extends Data>(collection: Collection<string, number, T>): readonly SQLTableColumn[];
    protected getColumnMigrations(tableName: string, from: SQLTableColumn | undefined, to: SQLTableColumn | undefined): readonly string[];
    protected getAlterColumnQueries(tableName: string, from: SQLTableColumn, to: SQLTableColumn): readonly string[];
    protected getTableColumnDefinition({ name, statement }: SQLTableColumn): string;
    protected getAddColumnQuery(tableName: string, column: SQLTableColumn): string;
    protected getDropColumnQuery(tableName: string, columnName: string): string;
    protected getTableMigrations<T extends Data>(collection: Collection<string, number, T>, table: SQLTable | undefined): readonly string[];
    protected getIDColumn<T extends Data>(collection: Collection<string, number, T>): SQLTableColumn;
    protected getDataColumn(): SQLTableColumn;
    protected getGeneratedColumn<T extends Data>({ column, key, path }: SQLColumn, collection: Collection<string, number, T>): SQLTableColumn;
    protected isSameColumn(from: SQLTableColumn, to: SQLTableColumn): boolean;
    protected quoteIdentifier(value: string): string;
    protected quoteString(value: string): string;
    protected getGeneratedColumns<T extends Data>(collection: Collection<string, number, T>): readonly SQLColumn[];
    protected getColumnName(key: string): string;
    protected getJSONPath(key: string): string;
    protected abstract getTables(): Promise<readonly string[]>;
    protected abstract getTable(name: string): Promise<SQLTable | undefined>;
    protected abstract getCreateTableSuffix<T extends Data>(collection: Collection<string, number, T>): string;
    protected abstract getDataColumnDefinition(): string;
    protected abstract getGeneratedColumnDefinition(columnName: string, path: string, definition: string): string;
    protected abstract getIDColumnDefinition<T extends Data>(collection: Collection<string, number, T>): string;
    protected definition<TValue>(schema: Schema<TValue>): string | undefined;
}