import type { Expr, Parameter } from './malloy_types';
import type { Dialect } from '../dialect';
import type { EventStream } from '../runtime_types';
type ConstantExpressionResult = {
    sql: string;
    error?: undefined;
} | {
    sql?: undefined;
    error: string;
};
/**
 * Compiles an IR expression containing only constants and parameters to SQL.
 * This is useful for expressions that don't reference source fields.
 *
 * @param expr The expression to compile (should contain only literals, parameters, and operations on them)
 * @param dialect The SQL dialect to use for generation
 * @param parameters Parameters that can be referenced in the expression
 * @param eventStream Optional event stream for debugging/tracking
 * @returns Either {sql: string} on success or {error: string} on failure
 */
export declare function constantExprToSQL(expr: Expr, dialect: Dialect, parameters?: Record<string, Parameter>, eventStream?: EventStream): ConstantExpressionResult;
export {};