import type { RowData } from './client.ts';
import type { DuckDBDatabase } from './driver.ts';
export { splitTopLevel } from './sql/split-top-level.ts';
export interface IntrospectOptions {
    /** BIGINT output mode. Defaults to bigint to preserve all 64 bits. */
    bigintMode?: 'bigint' | 'number';
    /**
     * Database/catalog to introspect. If not specified, uses the current database
     * (via `SELECT current_database()`). This prevents returning tables from all
     * attached databases in MotherDuck workspaces.
     */
    database?: string;
    /**
     * When true, introspects all attached databases instead of just the current one.
     * Ignored if `database` is explicitly set.
     * @default false
     */
    allDatabases?: boolean;
    schemas?: string[];
    includeViews?: boolean;
    useCustomTimeTypes?: boolean;
    mapJsonAsDuckDbJson?: boolean;
    importBasePath?: string;
}
interface DuckDbIndexRow extends RowData {
    database_name: string;
    schema_name: string;
    table_name: string;
    index_name: string;
    is_unique: boolean | null;
    expressions: string | null;
    sql: string | null;
}
export interface IntrospectedColumn {
    name: string;
    dataType: string;
    columnDefault: string | null;
    nullable: boolean;
    characterLength: number | null;
    numericPrecision: number | null;
    numericScale: number | null;
    /**
     * Generation expression of a generated column, or null for an ordinary
     * column. Undefined when the table definition could not be read.
     */
    generatedExpression?: string | null;
}
export interface IntrospectedConstraint {
    name: string;
    type: string;
    columns: string[];
    referencedTable?: {
        name: string;
        schema: string;
        columns: string[];
    };
    rawExpression?: string | null;
}
export interface IntrospectedTable {
    /** Database (catalog) that owns the table. */
    database?: string;
    schema: string;
    name: string;
    kind: 'table' | 'view';
    columns: IntrospectedColumn[];
    constraints: IntrospectedConstraint[];
    indexes: DuckDbIndexRow[];
}
export interface IntrospectResult {
    files: {
        schemaTs: string;
        metaJson: IntrospectedTable[];
        /** @deprecated Never populated. Will be removed in the next major version. */
        relationsTs?: string;
    };
}
export declare const DEFAULT_IMPORT_BASE = "@duckdbfan/drizzle-duckdb/helpers";
export declare function introspect(db: DuckDBDatabase, opts?: IntrospectOptions): Promise<IntrospectResult>;
export declare function buildDefault(defaultValue: string | null): string;
export declare function normalizeTypeLiteral(raw: string): string;
export declare function parseStructFields(inner: string): Array<{
    name: string;
    type: string;
}>;
export declare function parseMapValue(raw: string): string;
/** Returns the MAP key type, or undefined when it is a string type. */
export declare function parseMapKey(raw: string): string | undefined;
export declare function toIdentifier(name: string): string;