import type { TableData, ColumnName, Value, Row } from './data';
import type { GroupChunk } from './group';
import type { Aggregation } from './aggregate';
export interface Select {
    columns: SelectColumn[];
    distinct?: boolean;
}
export type SelectColumn = {
    column: ColumnName;
    alias?: ColumnName;
    aggregate?: Aggregation;
} | {
    alias: ColumnName;
    column: ColumnEvaluate;
} | {
    alias: ColumnName;
    aggregate: AggregateEvaluate;
};
export type ColumnEvaluate = (params: {
    row: Row;
    source: TableData;
}) => Value;
export type AggregateEvaluate = (params: {
    group: GroupChunk;
    source: TableData;
}) => Value;
export type ColumnConfig = {
    column: ColumnName;
    aggregate?: Aggregation;
} | {
    column: ColumnEvaluate;
} | {
    aggregate: AggregateEvaluate;
};