CTE with multiple rows and tables

Question

I have a problem with CTE, below my tables:

Table: Purchase

PID      szProductID     curQty        curPrice
1        001             10            100
2        001             30            200
3        001             50            300

and

Table: Sales

SID      szProductID     curQty        curSalesPrice
1        001             15            500
2        001             5             400
3        001             5             400
4        001             5             400
5        001             40            400

And I want to show those tables like below:

Result

SID      szProductID     curQty        curSalesPrice   curPurchasePrice
1        001             10            500             100
1        001             5             500             200
2        001             5             400             200
3        001             5             400             200
4        001             5             400             200
5        001             5             400             200
5        001             35            400             300

Basically, its just like a FIFO method..

I've found many CTE samples but they only compare many rows to one row, and sometimes i found an error : 'The statement terminated. The maximum recursion 100 has been exhausted before statement completion.' when i tried those samples...

Any help will be appreciated.

Answer 1

SQL will default cap out at 100 recursions unless you specify otherwise. You can get past 100 by using this at the end of your query.

OPTION (MAXRECURSION *NUMBER UP TO 32767 HERE*)