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嗨，我有一张表“交易”，其中很少有来自不同客户的银行交易。在该表中，我还有每笔交易的日期以及他们的月平均工资。此外，在不同的表“帐户”上，我可以随时获取其中少数客户的银行帐户余额。

我现在有一个请求，要弄清楚这些客户中哪些人的收入超过一个月，并检查紧急储蓄/弹性。关于如何解决这个问题的任何想法？

表事务的 DDL：

CREATE TABLE transactions (
customer_id uuid NOT NULL,
transaction_date varchar(10) NOT NULL,
transaction_id varchar NOT NULL,
transaction_amount numeric(10,2) NOT NULL,
description varchar NULL,
account_id uuid NOT NULL
)

表帐户的 DDL：

CREATE TABLE account(
    customer_id uuid NOT NULL,
    account_id uuid NOT NULL,
    provider_id int8 NOT NULL,
    account_sub_type varchar NOT NULL,
    current_balance numeric(10,2) NULL
)

到目前为止，我的 CTE / 查询如下所示：

WITH
over_one_income AS (
SELECT  customer_id, "month", "year", salary, transaction_amount, current_balance from 
    (
    SELECT ctf.customer_id
            ,date_part('month',ctf.date_key::date) as "month"
           ,date_part('year',ctf.date_key::date) as "year"
          ,round(sum(ctf.amount)/24/30,2) as transaction_amount 
          ,round(sm.yearly_net/12) as salary 
          ,sum(caf.current_balance) as current_balance

    from transactions ctf 
    join account caf 
    on ctf.customer_id = caf.customer_id and ctf.account_id = caf.account_id 
    join customer cf
    on cf.customer_id = caf.customer_id 
    join  salary_gross_to_net  sm
    on cf.annual_gross_salary= sm.yearly_gross
    group by ctf.customer_id
       ,date_part('month',ctf.date_key::date) 
       ,date_part('year',ctf.date_key::date)
       ,sm.yearly_net
   ) epc
   )
   
   select *  from over_one_income

上面的查询输出以下内容：

在此处输入图像描述

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