crystal-reports - 来自 CR 中多个表的汇总计算

Question

我正在处理水晶报告，并且对摘要有疑问 - 我有一批数据，其中包含三个级别的摘要：

"ordinv_rec"."activity"
"ordinv_rec"."op_region_2"
"ordinv_rec"."operator"

这是我的查询：

SELECT "ordinv_rec"."activity", "ordinv_rec"."status_2", "ordinv_rec"."operator_2", "ordinv_rec"."quote_no", "ordinv_rec"."vehicle_class_2", "customer"."veh_capex_2016", "ordinv_rec"."date_created", "ordinv_rec"."capex_value", "ordinv_rec"."activity_2", "ordinv_rec"."sub_class_2", "ordinv_rec"."budget_yn", "ordinv_rec"."budget_year", "ordinv_rec"."op_region_2", "customer"."activity"
 FROM   "dbase"."dbo"."customer" "customer" 
FULL OUTER JOIN "dbase"."dbo"."ordinv_rec" "ordinv_rec" ON "customer"."customer_code"="ordinv_rec"."operator"
 WHERE  "ordinv_rec"."date_created">={ts '2015-01-01 00:00:00'} 
AND ("ordinv_rec"."status_2"='DELIVERED' OR "ordinv_rec"."status_2"='LETTER OF INTENT' OR "ordinv_rec"."status_2"='LIVE') 
AND ("ordinv_rec"."budget_year"=0 OR "ordinv_rec"."budget_year"=2016)

基本上，该"customer"."veh_capex_2016"字段显示该运算符的单个值，例如 100 英镑，我需要在 "customer"."veh_capex_2016"和我的 VARIANCE 公式之间计算方差，{customer.veh_capex_2016}-{@Total Committed YTD}但将其插入摘要中会返回多个值。即{customer.veh_capex_2016}乘以订单数，然后减去{@Total Committed YTD}而不是仅返回单个字段值

非常感激地收到任何帮助或建议。