Question

我实际上发现了一些我可以解决的问题“需要帮助sql查询”。但如果能得到我具体问题的答案，我将不胜感激。我有2个表，一个是TRANSACTIONS，一个是EXPENSES。

TRANSACTION:
transaction_id
emp_id
sales_date
total_sales

并且

EXPENSES:
expenses_id
emp_id
expense_date
expenses1
expenses2
total_expenses

我想将所有TRANSACTION.transaction_amount AS sales_sum WHERE TRANSACTION.sales_date = @sales_date and TRANSACTION.emp_id = @emp_id .....总和，然后减去EXPENSES.total_expenses as expenses_deducted_sales WHERE EXPENSES.emp_id = TRANSACTION.emp_id AND TRANSACTION.sales_date = EXPENSES.expense_date

请帮助..谢谢

实施例

transaction_id    emp_id   sales_date     total_sales   
1                  101     11/11/2012      300  
2                  101     11/11/2012      400  
3                  101     11/11/2012      300  

expenses_id emp_id expenses_date  expenses1  expenses2  total_expenses
1            101    11/11/2012      100        100        200
2            102    12/12/2012      50         50         100
3            103    10/12/2012      200        200        400

expenses_deducted_sales =（300 + 400 + 300） - 200

我已经尝试过AHiggins给出的代码并提出了这些代码：

选择 CashTransactionsTbl.emp_id， CashTransactionsTbl.trans_date， CashTransactionsTbl.total_amt - ISNULL（ExpensesTbl.total_expenses，0）AS expenses_deducted_sales 从（选择 EMP_ID， TRANS_DATE， SUM（total_amt）AS sales_sum 来自CashTransactionsTbl GROUP BY emp_id，trans_date ）tr LEFT JOIN ExpensesTbl ON tr.emp_id = ExpensesTbl.emp_id AND tr.trans_date = ExpensesTbl.trans_date 哪里 tr.trans_date = 2014-07-10

但是我没有这个错误说：

“操作数类型冲突：日期与int”

不兼容

请帮忙！

Answer 1

您需要两个派生表：一个包含每个员工的交易金额，一个包含每个员工的费用金额。全外连接以获取所有记录。

select
  coalesce(t.emp_id, e.emp_id) as emp_id,
  coalesce(t.sum_sales, 0) as sum_sales,
  coalesce(e.sum_expenses, 0) as sum_expenses,
  coalesce(t.sum_sales, 0) - coalesce(e.sum_expenses, 0) as expenses_deducted_sales
from
(
  select emp_id, sum(total_sales) as sum_sales 
  from transaction 
  group by emp_id
) t
full outer join
(
  select emp_id, sum(total_expenses) as sum_expenses
  from expense 
  group by emp_id
) e on e.emp_id = t.emp_id;

Answer 2

您需要先从交易中获取汇总数据，然后再将其与费用中的数据进行匹配，如下所示：

SELECT  
    tr.Emp_ID,
    tr.Sales_Date,
    tr.Sales_Sum - ISNULL(Expenses.Total_Expenses,0) AS Expenses_Deducted_Sales
FROM
  (
    SELECT 
        Emp_ID,
        Sales_Date,
        SUM(Total_Sales) Sales_Sum
    FROM Transactions
  ) tr
     LEFT JOIN 
    Expenses ON 
        tr.Emp_ID = Expenses.Emp_ID AND
        tr.Sales_Date = Expenses.Expenses_Date
WHERE 
    tr.Sales_Date = @sales_date -- this could also go under the 'FROM Transactions' statement

Answer 3

这非常粗糙，但这样的事情会起作用：

Select T_Sales.*,T_Sales.totalsales-totalexpesnses 'Expenses_deducted_sales'
from (
    select t.emp_id,sales_date,SUM(totalsales) 'totalsales'
    from #transaction t
    group by t.emp_id,sales_date
    ) T_Sales
left join #expenses e
on T_Sales.emp_id = e.emp_id
and T_Sales.sales_date = e.expenses_date
where sales_date = @sales_date

PS。为拼写道歉 - 快速工作。

需要SQL帮助

3 个答案: