Question

I would like to thank in advance for any help.

My problem relates to two tables in MySQL (Now switching to postgresql). The tables are related to a ticketing database.

a) booking. It has four columns       ccode,date,time,amount
b) account  It has three columns      ccode,date,amount

The booking table has ticket bookings and account table has advances and payments received.

I have to prepare a statement of account based on ccode (customer code).

The statement shows columns as below

*Ccode    Type    Date     time    amount    balance*

- the report in sorted on ccode and then on date (account table row appears first)
- Type column displays B or A depending on record type
- Time column is present only in booking table
- Report has a running balance for each row 
- At the end for a customercode, the totals of amount and balance is displayed

I have had success, so far in creating a join as below. (and after dicussion below, have been able to generate TYPE column using IF)

   
SELECT     booking.cname, booking.bdate, booking.btime, booking.rate, booking.ID,
           IF(booking.btime IS NOT NULL, "B", "A") AS type, account.cname, account.date,
           account.amount, account.ID 
FROM       booking 
LEFT JOIN  account ON booking.bdate = account.date AND booking.cname=account.cname AND 
           booking.rate = account.amount  
UNION 
SELECT     booking.cname, booking.bdate, booking.btime, booking.rate, booking.ID, 
           IF(booking.btime IS NOT NULL, "B", "A") AS type, account.cname, account.date,
           account.amount, account.ID  
FROM       booking 
RIGHT JOIN account ON booking.bdate = account.date AND booking.cname=account.cname AND 
           booking.rate = account.amount

It displays all the records. A report can be generated using this table.

But is there a way to display the formatted report just by SQL.

I can change the order of columns and even add or remove existing ones as long as Record type is known and a running balance is displayed against each record.

A SAMPLE REPORT —- REPORT A

CODE          DATE           TYPE              AMOUNT            BALANCE    TIME

A1           02/19/2011       A                 50               50        
A1           02/20/2011       B                 35               15          1230
A1           02/21/2011       A                 40               55
A1           02/21/2011       B                 20               35          1830


optional > TOTAL Account = 90    Booking = 55    Balance = 35 

A SAMPLE REPORT —- REPORT B

CODE          AMOUNT BOOKED             AMOUNT PAID           BALANCE

A1                      50               50                     0
A1                      35               15                     20
A1                      40               55                    -15
A1                      20               35                    -15

this is a weekly statement version of REPORT A. 
the reason is i can add where and between to get only records in a given week. 
and since it is a weekly report, running balance is just omitted. 
It is report grouped for all entries with customercode A1 present 
   in booking and account tables.

thanx

Answer 1

I have found the answer.

It is to use cummulative sql statement to find a running balance