/**
 * PostgreSQL identifier validation utilities
 *
 * Provides validation for PostgreSQL identifiers (table names, column names, etc.)
 * following PostgreSQL naming rules and security best practices.
 */
/**
 * PostgreSQL identifier validation pattern
 * Identifiers must start with a letter or underscore, followed by letters, numbers, or underscores
 *
 * Note: PostgreSQL also allows $ in identifiers, but we disallow it for security
 */
export declare const POSTGRES_IDENTIFIER_PATTERN: RegExp;
/**
 * Maximum length for PostgreSQL identifiers (63 characters)
 */
export declare const MAX_IDENTIFIER_LENGTH = 63;
/**
 * Checks if a name is a valid PostgreSQL identifier
 *
 * @param name - The identifier to validate
 * @returns true if the identifier is valid, false otherwise
 */
export declare function isValidIdentifier(name: string): boolean;
/**
 * Validates a PostgreSQL identifier (table name or column name)
 *
 * @param name - The identifier to validate
 * @param type - The type of identifier ('table' or 'column') for error messages
 * @throws Error if the identifier is invalid
 */
export declare function validateIdentifier(name: string, type?: 'table' | 'column'): void;
/**
 * Validates a schema-qualified PostgreSQL name (e.g., "public.users")
 *
 * @param name - The schema-qualified name to validate (schema.identifier)
 * @throws Error if the name is invalid
 */
export declare function validateSchemaQualifiedName(name: string): void;
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