postgresql 查询使用连接从两个表中获取总和和列

Question

These are the tables that I have created: Tables

1. I want to get accounts.account,accounts.type,DATE(transactions.date),transactions.transactionid,transactions.amount,transactions.note from two tables between '10-11-2021' and '31-12-2021'.(whatever type may be)

2. I want to get Sum(account) from transactions table where type="income" and between '10-11-2021' and '31-12-2021'.

3. I want to get Sum(account) from transactions table where type="expense" and between '10-11-2021' and '31-12-2021'.

But I need all three queries in a single statement(that's what I am struggling)

My query:

SELECT  accounts.account,accounts.type,DATE(transactions.date),transactions.transactionid,transactions.amount,transactions.note
FROM transactions
FULL JOIN accounts ON transactions.accountid=accounts.accountid
WHERE transactions.date BETWEEN '{0}' AND '{1}' ORDER BY transactions.date
UNION
  select sum(amount)
  FROM transactions
  FULL JOIN accounts ON transactions.accountid=accounts.accountid 
  WHERE accounts.type='income'

I need to add other two queries also to fit above

can anyone help me?

Answer 1

Given the poor information about the source tables, the best I could is the following:

SELECT  
        a.account,
        a.type,
        DATE(t.date),
        sum(case when t.type = 'income' then t.amount else 0 end) sum_of_income,
        sum(case when t.type = 'expense' then t.amount else 0 end) sum_of_expense

FROM transactions t 
left JOIN accounts a
    ON t.accountid = a.accountid 
group by
    a.account,
    a.type,
    DATE(t.date)

tip: you shouldn't write your sql script in single-line code, almost never.

Also could be more informative to have table contents, or at least screenshots.