export interface SqlDialectEscapeRules {
    /** Character that delimits string literals. Standard SQL uses a single quote. */
    readonly stringQuoteChar: string;
    /**
     * When `true`, a quote inside a literal is escaped by doubling it (`''`).
     * Every standards-tracking engine supports this, so it is the safe default.
     */
    readonly doubleQuoteToEscape: boolean;
    /**
     * When `true`, the backslash is an escape character inside string literals and
     * a literal backslash must be doubled (`\\`). MySQL behaves this way; Presto,
     * Trino and standard SQL do NOT.
     */
    readonly escapeBackslash: boolean;
    /** Character that delimits identifiers (`"` for standard SQL, `` ` `` for MySQL). */
    readonly identifierQuoteChar: string;
}
/**
 * Escaping dialect of the target engine:
 *   - `ansi`  — standard SQL: Presto, Trino, Athena, Dremio, ksqlDB, Pinot, ...
 *   - `mysql` — MySQL / MariaDB: quotes doubled, backslash is an escape char
 *   - `spark` — Spark SQL / Hive / Databricks: backslash escapes only
 */
export type EscapeDialect = 'ansi' | 'mysql' | 'spark';
/**
 * Format a query for the given engine dialect: `?` -> escaped value,
 * `??` -> escaped identifier.
 */
export declare function format(dialect: EscapeDialect, sql: string, values?: unknown): string;
/**
 * Format a query for standard-SQL engines (Presto, Trino, Postgres, ...):
 * `?` -> escaped value, `??` -> escaped identifier.
 */
export declare function formatAnsi(sql: string, values?: unknown): string;
/**
 * Format a query for MySQL / MariaDB: `?` -> escaped value, `??` -> escaped
 * identifier.
 */
export declare function formatMySql(sql: string, values?: unknown): string;
/**
 * Format a query for Spark SQL / Hive / Databricks: `?` -> escaped value,
 * `??` -> escaped identifier.
 */
export declare function formatSparkSql(sql: string, values?: unknown): string;
export declare function escapeStringLiteral(value: string): string;
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