Start With Connect by usage without Prior keyword

[Christian]

HI,
Is there a usage for something like this:

Select MyColumn
From MyTable
Start with MyCol = aNumber
Connect By MyCol = MyOtherCol

If not, its a bit weird that Oracle does not raise an error since the
keyword PRIOR is not used like this:

Select MyColumn
From MyTable
Start with MyCol = aNumber
Connect By Prior MyCol = MyOtherCol

Thank you,
Christian Cote

[Mark C. Stock]

Re: Start With Connect by usage without Prior keyword


"Christian" <ccote_msl@yaho o.comwrote in message
news:992a9b5a.0 406080846.6ad36 d37@posting.goo gle.com...
| HI,
| Is there a usage for something like this:
|
| Select MyColumn
| From MyTable
| Start with MyCol = aNumber
| Connect By MyCol = MyOtherCol
|
| If not, its a bit weird that Oracle does not raise an error since the
| keyword PRIOR is not used like this:
|
| Select MyColumn
| From MyTable
| Start with MyCol = aNumber
| Connect By Prior MyCol = MyOtherCol
|
| Thank you,
| Christian Cote

no reasonable usage that i can see, but it does appear that the where-as the
syntax is not checked, any statement that leaves out the PRIOR (cannot leave
out the CONNECT BY) will either return no rows or will raise 'ORA-01436:
CONNECT BY loop in user data'

++ mcs

[Mikito Harakiri]

Re: Start With Connect by usage without Prior keyword

"Mark C. Stock" <mcstockX@Xenqu ery .comwrote in message news:<_uGdnQE3w rDO20zd4p2dnA@c omcast.com>...

"Christian" <ccote_msl@yaho o.comwrote in message
news:992a9b5a.0 406080846.6ad36 d37@posting.goo gle.com...
| HI,
| Is there a usage for something like this:
|
| Select MyColumn
| From MyTable
| Start with MyCol = aNumber
| Connect By MyCol = MyOtherCol
|
| If not, its a bit weird that Oracle does not raise an error since the
| keyword PRIOR is not used like this:
|
| Select MyColumn
| From MyTable
| Start with MyCol = aNumber
| Connect By Prior MyCol = MyOtherCol
|
| Thank you,
| Christian Cote
>
no reasonable usage that i can see, but it does appear that the where-as the
syntax is not checked, any statement that leaves out the PRIOR (cannot leave
out the CONNECT BY) will either return no rows or will raise 'ORA-01436:
CONNECT BY loop in user data'

select rownum from dual connect by rownum < 100

I'm not sure about the earlier versions but since 9.2 it certainly
won't give you 'ORA-01436'.