import type { ColumnSpec } from './types.js';
export type SqlArg = SqlExpr | ColumnSpec | string | number | bigint | boolean | null;
export interface SqlExpr {
    sql: string;
}
export declare function rawSql(sql: string): SqlExpr;
export declare function sqlColumn(column: ColumnSpec): SqlExpr;
export declare function sqlLiteral(value: SqlArg): SqlExpr;
export declare function callSql(name: string, ...args: SqlArg[]): SqlExpr;
export declare function percentile(column: ColumnSpec, p: number): SqlExpr;
export declare function percentileCont(column: ColumnSpec, p: number): SqlExpr;
export declare function percentileDisc(column: ColumnSpec, p: number): SqlExpr;
export declare function groupConcat(column: ColumnSpec, separator?: string): SqlExpr;
export declare function stringAgg(column: ColumnSpec, separator: string): SqlExpr;
export declare function jsonExtract(value: SqlArg, path: string): SqlExpr;
export declare function jsonValid(value: SqlArg): SqlExpr;
export declare function dateTime(value?: SqlArg, ...modifiers: string[]): SqlExpr;
export declare function dateOnly(value?: SqlArg, ...modifiers: string[]): SqlExpr;
export declare function unixEpoch(value?: SqlArg, ...modifiers: string[]): SqlExpr;
export declare function mathFn(name: string, ...args: SqlArg[]): SqlExpr;
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