How to use "Contains" operator

Question

Hi All,
I'm trying to use oracle text with the Contains operator. But I'm experiencing troubles.
When I have only one condition with the Contains operator the query works fine :
SELECT ObjectID
FROM T_Object
WHERE Contains (Title, 'english', 1) > 0
But when I add a second contains clause it does not work anymore:
SELECT ObjectID
FROM T_Object
WHERE Contains (Title, 'english', 1) > 0
OR Contains(ShortDescription, 'english', 1) > 0;
here is the error message :
ERROR LINE 4 :
ORA-29907: Double lables detected in primary calls.
I must admit that the error message is quite clear but I still can't understand why the query does not work.
Any help will be very appreciated.
Kind regards.

Answer 1

Change the label in the 'OR' part of the select statement and try.
SELECT ObjectID
FROM T_Object
WHERE Contains (Title, 'english', 1) > 0
OR Contains(ShortDescription, 'english', 1) > 0;
Try:
SELECT ObjectID
FROM T_Object
WHERE Contains (Title, 'english', 1) > 0
OR Contains(ShortDescription, 'english', 2) > 0;