import { Field } from "../Field";
import type Cypher from "sgnm-cypher-builder";
export declare abstract class AggregationField extends Field {
    getProjectionField(_variable: Cypher.Variable): Record<string, Cypher.Expr>;
    abstract getAggregationExpr(variable: Cypher.Variable): Cypher.Expr;
    abstract getAggregationProjection(target: Cypher.Variable, returnVar: Cypher.Variable): Cypher.Clause;
}
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