import { z } from 'zod';
import type { QueryResult } from '../database/types.js';
export declare const GetSchemaSchema: z.ZodObject<{
    tableName: z.ZodOptional<z.ZodString>;
}, "strip", z.ZodTypeAny, {
    tableName?: string | undefined;
}, {
    tableName?: string | undefined;
}>;
export type GetSchemaInput = z.infer<typeof GetSchemaSchema>;
/**
 * Get database schema information with enhanced error handling
 */
export declare function getDatabaseSchema(input?: GetSchemaInput): Promise<{
    success: boolean;
    data: QueryResult;
    hint?: string;
    optimization_note?: string;
} | {
    success: boolean;
    error: string;
    suggestions: string[];
    hint: string;
    original_error?: undefined;
    troubleshooting?: undefined;
} | {
    success: boolean;
    error: string;
    original_error: any;
    troubleshooting: {
        check_permissions: string;
        check_connection: string;
        list_all_tables: string;
    };
    suggestions?: undefined;
    hint?: undefined;
}>;
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