/**
 * Wraps a name in backticks, escaping backslashes and backticks so the name can
 * never terminate the quoted identifier early. Matches ClickHouse's own
 * formatting of quoted identifiers.
 */
export declare function quoteIdentifier(name: string): string;
/**
 * Renders a database or object name. Plain identifiers stay bare so generated
 * SQL is unchanged for existing schemas; anything else is quoted and escaped.
 */
export declare function renderIdentifier(name: string): string;
export declare function renderQualifiedName(database: string, name: string): string;
/** Returns why a name cannot be used as a ClickHouse identifier, if it can't. */
export declare function describeInvalidIdentifier(name: string): string | undefined;
/**
 * Replaces every backtick-quoted identifier in a SQL fragment with its raw,
 * unescaped name, leaving string literals untouched. Used to compare clauses
 * that ClickHouse re-renders with its own quoting (e.g. key clauses in drift).
 */
export declare function unquoteIdentifiers(sql: string): string;
export declare function unescapeQuoted(body: string, quote?: string): string;
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