查询内部查询，其中表2.amount（stat = 1）的总和大于表1费用的总和

Question

I have two tables

table:transaction

id . user_id . amount . status
1 - - 100 -- --- 500 - ----- 1
2 - - 100 -- --- 100 - ----- 0
3 - - 110 -- --- 200 - ----- 1

table:campaign

id . user_id . bid . status . budget . expense . size
1 -- 100 ---- 80  --- 1 ------- 200 ------ 200 ---- 5 --
2 -- 109 ---- 75  --- 1 ------- 050 ------ 030 ---- 2 --
3 -- 100 ---- 65  --- 1 ------- 700 ------ 065 ---- 2 --
4 -- 107 ---- 77  --- 0 ------- 020 ------ 020 ---- 2 --
5 -- 90 ----- 87  --- 1 ------- 120 ------ 090 ---- 7 --

I need campaign.id after filters using php and mysql

condition: if total money/transaction received from a user is greater than total expenses by a user. Money is also approved money (1=approved, 0=pending). Campaign is on means 1, who placed maximum bid

(sum(transaction.amount) WHERE transaction.status = 1 of that any user) > sum(campaign.expense of that user)

bid = max(bid)

Camps status = 1

1 step solution

 mysql_query("SELECT campaign.* FROM campaign c,transaction t  
            WHERE budget>expense AND status='1' AND size='2' 
            ON c.user_id=t.user_id 
            HAVING SUM (CASE WHEN transaction.status=1 THEN transaction.amount ELSE 0 END) > SUM(campaign.expense)"));

not working

Alternatively if any solution in 3 steps -

1st step

   mysql_query("SELECT id,user_id FROM campaign 
        WHERE budget>expense AND status='1' AND size='2'")

2nd step

  keep id,user_id of 1st step WHERE SUM(transaction.amount status=1)
             > SUM(campaign.expense)

3rd step

  mysql_query("SELECT id,user_id FROM campaign 
        WHERE step2 satisfied")

Please help, I will sleep after solving it

Answer 1

Try this:

SELECT camps.id,camps.bid FROM camps c JOIN tran t  ON c.user_id=t.user_id 
    HAVING SUM (CASE WHEN tran.status=1 THEN tran.amount ELSE 0 END)
       > SUM(CASE WHEN camp.status= 1 THEN camps.expense ELSE 0 END)