Hello,
A script we run against the database as part of the upgrade of our product
is failing with the following message:
ALTER TABLE ALTER COLUMN EncodedID failed because STATISTICS hind_61_3
accesses this column
The line that fails is:
alter table Badge alter column EncodedID nvarchar(16)
It's clear that there's some kind of automatically generated statistics
object referencing the column that prevents us from changing it from an
int to an nvarchar. However, I have no idea how that got there - my best
guess would be that it has something to do with the auto generate
statistics option being set on the database. However that seems odd to me
because we've done lots and lots of work like this and not encountered the
problem. It also seems like a quick fix would be to perform:
Drop Statistics Badge.encodedid
However I am afraid subsequent statements might fail on this db since I
wasn't really expecting this in the first place. Does anyone have any
insight?
Dave 3 5672
Metal Dave (me***@spam.spa m) writes: A script we run against the database as part of the upgrade of our product is failing with the following message:
ALTER TABLE ALTER COLUMN EncodedID failed because STATISTICS hind_61_3 accesses this column
The line that fails is:
alter table Badge alter column EncodedID nvarchar(16)
It's clear that there's some kind of automatically generated statistics object referencing the column that prevents us from changing it from an int to an nvarchar. However, I have no idea how that got there - my best guess would be that it has something to do with the auto generate statistics option being set on the database. However that seems odd to me because we've done lots and lots of work like this and not encountered the problem.
I played around a little, and not all table changes caused complaints
about statistics. But changing a column from varchar to nvarchar did.
The statistics in question is not a regular auto-statistics, their
names are different. My guess is that this could be something created
by the Index Tuning Wizard. "hind" makes me think of "hypothetic al indexes".
It also seems like a quick fix would be to perform:
Drop Statistics Badge.encodedid
Well, "DROP STATISTICS Badge.hind_61_3 " would be better.
--
Erland Sommarskog, SQL Server MVP, es****@sommarsk og.se
Books Online for SQL Server SP3 at http://www.microsoft.com/sql/techinf...2000/books.asp
On Mon, 20 Dec 2004, Erland Sommarskog wrote: The statistics in question is not a regular auto-statistics, their names are different. My guess is that this could be something created by the Index Tuning Wizard. "hind" makes me think of "hypothetic al indexes".
This makes a lot of sense. Thanks for the input. It also explains how this
might have gotten onto a customers database, if their dba started poking
around without us knowing about it.
Do you happen to know the naming scheme of the auto stats? It also seems like a quick fix would be to perform:
Drop Statistics Badge.encodedid
Well, "DROP STATISTICS Badge.hind_61_3 " would be better.
Oops, that's what I intended to type. Thanks for the correction. I don't
even think mine would have run.
Dave This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics |
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