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Message Posted: Thu, 03 Feb 2005 @ 12:48:37 GMT
| Subj: | | Re: Secondary Index on Volatile tables |
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| From: | | Dieter Noeth |
| | 1. Can you drop an index on an existing volatile table, and if so how? | |
No
| | 2. Can you create an index on an existing volatile table, and if so how? | |
No
| | 3. Stats can't be collected but I thought stats on SI's were important? | |
Yes
| | 4. Is this an undocumented feature? | |
It's probably just a parser bug ;-)
| | I don't believe you could do this in the past and I was interested on any feedback you may have. | |
I definitley wrote something similar, when volatile tables were introduced and it throw an error.
Since then i know about that restriction and never try it again :-)
I just checked it on V2R6: It still doesn't support create/drop index, but your DDL worked.
Then i inserted some rows and used Ferret showb/l: Both subtables exist.
A select using the index column worked like any select without stats: The index is only used for equality, if the Random AMP sample shows a
high selectivity.
Dieter
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