缺少括号错误

Question

So I created the following code:

Select c_id, c_name 
From bk_CustWithOrders 
where to_char(order_date,'MM-YYYY')=prevMonth(sysdate '2014-11-27', 4)
INTERSECT 
Select c_id, c_name 
From bk_CustWithOrders 
where to_char(order_date,'MM-YYYY')=prevMonth(sysdate '2014-11-27', 3)
INTERSECT 
Select c_id, c_name 
From bk_CustWithOrders
where to_char(order_date,'MM-YYYY')=prevMonth(sysdate '2014-11-27', 2);

and I get the following error message:

ORA-00907: missing right parenthesis
00907. 00000 -  "missing right parenthesis"
*Cause:    
*Action:
Error at Line: 3 Column: 55

I've tried adding parenthesis but then I incur another error. Not sure what to do.

Answer 1

I dont know anyting about the function prevMonth .

But, What I noticed is there is no separator between sysdate and '2014-11-27'.

prevMonth(sysdate '2014-11-27', 2);

Use ',' between sysdate and '2014-11-27' and recheck:

prevMonth(sysdate, '2014-11-27', 2); else you have to use any one of sysdate or '2014-11-27'

prevMonth(sysdate, 2);

prevMonth('2014-11-27', 2);

Answer 2

Line 3, column 55 is exactly at start of this part:

'2014-11-27', 4)

He's saying : I don't understand why you put a whitespace as separator.

Answer 3

sysdate '2014-11-27' is invalid.

If you only want to specify a date literal, it should be: date '2014-11-27'

sysdate is a function that returns the current date. If you just want to pass the current date to the function, then use only sysdate .