Hi All
Im into SQL trees trying to work with CELKO way to do it:
http://www.intelligententerprise.com/001020/celko.shtml
The problem is that if I try to add a new descendent which is not the most
right sibling I get UNIQUE error.
This occur ( if im right ) when the update try to update the lft column
which is UNIQUE
Example of table:
CREATE TABLE areas (
lft INT UNIQUE
);
I inserted 3 rows with value: 1, 2, 3
now im trying to update:
update areas set lft = lft +1;
Then I get the UNIQUE problem.
Is there a way to do UNIQUE check after the whole table got updated ?
If not, any ideas to walk around the problem ?
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