/**
 * Validation utilities for input validation and data integrity checks
 */
/**
 * Validates database connection parameters
 */
export declare function validateDatabaseConnection(connection: {
    host?: string;
    port?: number;
    database?: string;
    user?: string;
    username?: string;
    password?: string;
    schema?: string;
}): void;
/**
 * Validates schema name
 */
export declare function validateSchemaName(schema: string): void;
/**
 * Validates table name
 */
export declare function validateTableName(tableName: string): void;
/**
 * Validates function name
 */
export declare function validateFunctionName(functionName: string): void;
/**
 * Validates SQL identifier
 */
export declare function validateSQLIdentifier(identifier: string, type?: string): void;
/**
 * Validates that a value is not null or undefined
 */
export declare function validateNotNull<T>(value: T | null | undefined, name: string): T;
/**
 * Validates that a value is a non-empty string
 */
export declare function validateNonEmptyString(value: unknown, name: string): string;
/**
 * Validates that a value is a positive integer
 */
export declare function validatePositiveInteger(value: unknown, name: string): number;
/**
 * Validates array is not empty
 */
export declare function validateNonEmptyArray<T>(array: T[], name: string): T[];
/**
 * Validates that all required properties exist on an object
 */
export declare function validateRequiredProperties<T extends Record<string, unknown>>(obj: T, requiredProperties: (keyof T)[]): T;
/**
 * Sanitizes SQL identifier by escaping special characters
 */
export declare function sanitizeSQLIdentifier(identifier: string): string;
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