Question

I have 2 tables in my sqlite3 database. Can someone help me with the sql command below:

tbltrans:

transid |  transdate | discountpercentage | Bank
12345     10/09/2011     5                  20.00

tbltrans2:

transid   |   itemnr   |price | btwpercentage | qty
12345         205        10.11        12        5
12345         302        15.00        6         7
12345         501        20.00        21        3

My first question is:

1. I want to get a query table with total amount of sale for each transid’s and calculated cash, like:

   Select
       Sum(tbltrans2.qty * tbltrans2.price) as TotalAmount,
       (Totalamount - tbltrans.Bank) as Cash
   where 
       tbltrans.transid = tbltrans2.transid 
       and transdate = '10/09/12'
   

   Can someone please correct this SQL statement ?

— This question below is already solved —

So, can anyone correct my sql code to work with this table layout:

select 
    sum(price * qty - (price * qty) * (tbltrans.discountpercentage / 100)  
from 
    tbltrans2 
where 
    btwpercentage = 6) as total6 ,
  sum(price * qty - (price*qty)*(tbltrans.discountpercentage /100) from tbltrans2 where btwpercentage =12) as total12,
sum(price * qty - (price*qty)*(tbltrans.discountpercentage /100) from tbltrans2 where btwpercentage =21) as total21
 where transdate = date('10/09/2011')

Answer 1

You should be able to join the tables and use something like this:

select 
  sum(case when t2.btwpercentage =6 then
        t2.price * t2.qty - (t2.price * t2.qty* t1.discountpercentage /100) end) Total6,
  sum(case when t2.btwpercentage =12 then
        t2.price * t2.qty - (t2.price * t2.qty* t1.discountpercentage /100) end) Total12,
  sum(case when t2.btwpercentage =21 then
        t2.price * t2.qty - (t2.price * t2.qty* t1.discountpercentage /100) end) Total21
from tbltrans t1
left join tbltrans2 t2
  on t1.transid = t2.transid
where transdate = date('10/09/2011')

See SQL Fiddle with Demo

Based on your comments, you can also use:

select count(t1.transid) Total,
  sum(case when t2.btwpercentage =6 then
        t2.price * t2.qty - (t2.price * t2.qty* t1.discountpercentage /100) end) Total6,
  sum(case when t2.btwpercentage =12 then
        t2.price * t2.qty - (t2.price * t2.qty* t1.discountpercentage /100) end) Total12,
  sum(case when t2.btwpercentage =21 then
        t2.price * t2.qty - (t2.price * t2.qty* t1.discountpercentage /100) end) Total21
from tbltrans t1
left join tbltrans2 t2
  on t1.transid = t2.transid
where transdate = date('10/09/2011')