finding sparse column in your tables

tonight i was working on compressing indexes for a sharepoint database.  I ran into some issue because some of the columns were using sparse data type, which is great for saving space on null values.  Because of this, you can’t compress the table or indexes.

the following script will help you identify which table has sparse columns instead of looking thru it one at time

select distinct from sys.columns c
right join sys.objects o
on c.object_id = o.object_id
where o.type = ‘U’
and COLUMNPROPERTY( OBJECT_ID(,,’issparse’) = 1

Invalid object name ‘msdb.dbo.cdc_jobs’

This past weekend, I had to migrate a sql instance from an old UCS blade to a new one.  The new blade would boot from the ZFS san instead of the retarded netapp san.  It might be retarded because of all the hands that has been in it but suffice to say, it suck.

I ran into two unknowns during this migration

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DNS alias to SQL named instance

I have a server here at that has multiple sql named instances and only 1 IP address.  All sql instances are listening on that IP address and they are all currently on dynamic ports.  I have created a static DNS entry that looks like this:

CDev     A is assigned to a server name HorseShoe.  The idea is to have the devs connect to CDev instead of connecting to HorseShoe\Instance1.

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