Showing posts with label million. Show all posts
Showing posts with label million. Show all posts

Wednesday, March 21, 2012

Move table to partition schema.

I have table with several million rows, which I would like to move to
partition schema.
I've found this option is present in ALTER TABLE command. However, this
command
alter table TaleName move to ps_Schema ( PartitionColumnName)
resulted in error:
Msg 102, Level 15, State 1, Line 1
Incorrect syntax near 'move'.
I assume the syntax is wrong, but how to accomplish this task ? What is the
correct syntax?
Thank you very much.I assume you are using SQL Server 2005.
Please read the full definition of ALTER TABLE again.
The MOVE can only be used as part of dropping a clustered index, so it is
the clustered index that is moving. The clustered index needs to have been
created as part of a primary key or unique constraint.
Make sure you already have the partition scheme defined.
The syntax would be something like this (untested):
ALTER TABLE table_name DROP CONSTRAINT clustered_index_constraint_name
WITH MOVE TO ps_Schema ( PartitionColumnName)
(I am also assuming you are aware a partition scheme has nothing to do with
schema, so that your name ps_schema is just a typo.)
--
HTH
Kalen Delaney, SQL Server MVP
"BP" <BP@.discussions.microsoft.com> wrote in message
news:5791C6D0-7BFA-4B56-B6CB-240783F88F5D@.microsoft.com...
>I have table with several million rows, which I would like to move to
> partition schema.
> I've found this option is present in ALTER TABLE command. However, this
> command
> alter table TaleName move to ps_Schema ( PartitionColumnName)
> resulted in error:
> Msg 102, Level 15, State 1, Line 1
> Incorrect syntax near 'move'.
> I assume the syntax is wrong, but how to accomplish this task ? What is
> the
> correct syntax?
> Thank you very much.
>|||Kalen,
Thank you very much. I am admired with your articles and books.
I am waiting to buy your new book.
The correct syntax is:
ALTER TABLE dbo.Test DROP CONSTRAINT pk_Test
WITH (MOVE TO ps_OrderDate (OrigOrderDT));
Thank you again.
"Kalen Delaney" wrote:
> I assume you are using SQL Server 2005.
> Please read the full definition of ALTER TABLE again.
> The MOVE can only be used as part of dropping a clustered index, so it is
> the clustered index that is moving. The clustered index needs to have been
> created as part of a primary key or unique constraint.
> Make sure you already have the partition scheme defined.
> The syntax would be something like this (untested):
> ALTER TABLE table_name DROP CONSTRAINT clustered_index_constraint_name
> WITH MOVE TO ps_Schema ( PartitionColumnName)
> (I am also assuming you are aware a partition scheme has nothing to do with
> schema, so that your name ps_schema is just a typo.)
> --
> HTH
> Kalen Delaney, SQL Server MVP
>
> "BP" <BP@.discussions.microsoft.com> wrote in message
> news:5791C6D0-7BFA-4B56-B6CB-240783F88F5D@.microsoft.com...
> >I have table with several million rows, which I would like to move to
> > partition schema.
> >
> > I've found this option is present in ALTER TABLE command. However, this
> > command
> >
> > alter table TaleName move to ps_Schema ( PartitionColumnName)
> >
> > resulted in error:
> >
> > Msg 102, Level 15, State 1, Line 1
> > Incorrect syntax near 'move'.
> >
> > I assume the syntax is wrong, but how to accomplish this task ? What is
> > the
> > correct syntax?
> >
> > Thank you very much.
> >
>
>

Move table to partition schema.

I have table with several million rows, which I would like to move to
partition schema.
I've found this option is present in ALTER TABLE command. However, this
command
alter table TaleName move to ps_Schema ( PartitionColumnName)
resulted in error:
Msg 102, Level 15, State 1, Line 1
Incorrect syntax near 'move'.
I assume the syntax is wrong, but how to accomplish this task ? What is the
correct syntax?
Thank you very much.I assume you are using SQL Server 2005.
Please read the full definition of ALTER TABLE again.
The MOVE can only be used as part of dropping a clustered index, so it is
the clustered index that is moving. The clustered index needs to have been
created as part of a primary key or unique constraint.
Make sure you already have the partition scheme defined.
The syntax would be something like this (untested):
ALTER TABLE table_name DROP CONSTRAINT clustered_index_constraint_name
WITH MOVE TO ps_Schema ( PartitionColumnName)
(I am also assuming you are aware a partition scheme has nothing to do with
schema, so that your name ps_schema is just a typo.)
--
HTH
Kalen Delaney, SQL Server MVP
"BP" <BP@.discussions.microsoft.com> wrote in message
news:5791C6D0-7BFA-4B56-B6CB-240783F88F5D@.microsoft.com...
>I have table with several million rows, which I would like to move to
> partition schema.
> I've found this option is present in ALTER TABLE command. However, this
> command
> alter table TaleName move to ps_Schema ( PartitionColumnName)
> resulted in error:
> Msg 102, Level 15, State 1, Line 1
> Incorrect syntax near 'move'.
> I assume the syntax is wrong, but how to accomplish this task ? What is
> the
> correct syntax?
> Thank you very much.
>|||Kalen,
Thank you very much. I am admired with your articles and books.
I am waiting to buy your new book.
The correct syntax is:
ALTER TABLE dbo.Test DROP CONSTRAINT pk_Test
WITH (MOVE TO ps_OrderDate (OrigOrderDT));
Thank you again.
"Kalen Delaney" wrote:

> I assume you are using SQL Server 2005.
> Please read the full definition of ALTER TABLE again.
> The MOVE can only be used as part of dropping a clustered index, so it is
> the clustered index that is moving. The clustered index needs to have been
> created as part of a primary key or unique constraint.
> Make sure you already have the partition scheme defined.
> The syntax would be something like this (untested):
> ALTER TABLE table_name DROP CONSTRAINT clustered_index_constraint_name
> WITH MOVE TO ps_Schema ( PartitionColumnName)
> (I am also assuming you are aware a partition scheme has nothing to do wit
h
> schema, so that your name ps_schema is just a typo.)
> --
> HTH
> Kalen Delaney, SQL Server MVP
>
> "BP" <BP@.discussions.microsoft.com> wrote in message
> news:5791C6D0-7BFA-4B56-B6CB-240783F88F5D@.microsoft.com...
>
>

Friday, March 9, 2012

Move large table from DB to DB

I have a table of approx 1/2 million rows.

On a nightly basis, this table gets rebuilt in a temporary database. Once the table has been built and scrubbed, i need to move it into our webservers db.

I'd like to do this with minimal interuption to the website.

Possible techniques:

1) I could set up a DTS package to copy the table object overwriting the destination table

2) I could export to a flat file and then bulk import into the live table (after truncating it)

3) I could run a process to update smaller chunks of data at a time running delete queries and insert queries.

Anybody have a thought on the best way to do this so that the web users would be virtually unaware that anything was happening ?Is the webserver's db.. like at a remote location?

I'd go with loading that temp db to another temp db on the webserver, and reverse engineer it.|||The temp DB is on the same SQL server as the webservers DB.

so the questions remains....

What's the best way to move a table from DB to DB with minimal interuption to the user?|||I use DTS for almost the same thing, but my table is < 1gig. I dont notice any slowdown, but I probably only have 5 current users at any instance.|||are you object copying or bulk inserting ?