Archives of the TeradataForum
Message Posted: Tue, 23 Nov 2004 @ 09:00:15 GMT
| Subj: | | Re: Quesion on Explain plan on "Create a new table" |
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| From: | | Dieter Noeth |
akleema_talukder wrote:
| | When I do a explain on a " create table " I see in the explain plan two steps which I do not understand reason behind it. I highlighted
these two steps below. We know that we see "AMP ABORT test " which caused by an ABORT or ROLLBACK statement . My question is: Why do we see
these steps in the Create table statements?" | |
| | I will appreciate if anybody gives me any hints for the reason behind it. | |
I don't know exactly, too.
But i always tell my students, it's probably a check if the tablename is still valid, because that create table might have been blocked and
queued by a Drop Database or another Create Table.
1) We do a single-AMP ABORT test from DBC.DBase by way of the
unique primary index.
-> does the table's database still exist?
2) We do a single-AMP ABORT test from DBC.TVM by way of the
unique primary index.
-> is there no other object with that name within that database?
Dieter
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