Tag Archives: update

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And you said you are unconsolable…clean up before you leave

Greetings,

I am approaching my last day at my current job. I love it here and will be really sad to leave, but have an awesome opportunity to grow my knowledge and career with a company on my “want to work for” list.

There are a lot of things to take care of before I leave.  I have been updating documentation (with meme’s) so that it is useful and fun.  I am trying to wrap up all my tickets and outstanding items and last night I woke up and realized, I was the owner of some databases.  This is how I fixed it:

I launched a query window on my Central Management Server to save time, but you can run this on one server at a time if you want.  I used the syntax from sp_helpdb to find out what I wanted to query:

select name, isnull(suser_sname(sid),'~~UNKNOWN~~') AS Owner, convert(nvarchar(11), crdate),dbid, cmptlevel
from master.dbo.sysdatabases
WHERE suser_sname(sid) = 'domain\MyUserName'

Some of the applications in my environment run under a special user and I didn’t want to interfere with those, I just wanted to fix the ones that use me.  Then I borrowed some code from Brent Ozar:

SELECT 'ALTER AUTHORIZATION ON DATABASE:: ['+ name +'] to sa;'
FROM master.dbo.sysdatabases
WHERE suser_sname(sid) = 'domain\MyUserName'

Here’s one I run on the CMS to find any SQL Agent Jobs that I own across my enterprise and then I can run the update scripts that are generated on the individual servers.


SELECT 'EXEC MSDB.dbo.sp_update_job ' + char(13) +
'@job_name = ' + char(39) + [Name] + char(39) + ',' + char(13) +
'@owner_login_name = ' + char(39) + 'sa' + char(39) + char(13) + char(13)+';'
FROM msdb.dbo.sysjobs
WHERE SUSER_SNAME(owner_sid) = 'domain\MyUserName'
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It was the coldest night of the year a query with a lot of columns had me in tears…

Yesterday I was working with Jason so super big thank you to him for this script.  We were writing an insert statement and it had a lot of columns.  I was getting ready to script out the table when he showed me this little bit of code.  If you enter your database name and table name it will give you all your columns with commas.  You can even toss your alias in the query so you don’t have to spend a bunch of time adding it.

Declare @DBName as varchar(100)
Declare @tablename as varchar (100)

Set @DBName = 'MyDatabaseName'
Set @tablename = 'MyTableName'

Select T.TABLE_SCHEMA, T.TABLE_NAME
, Stuff(
(
Select ', ' + C.COLUMN_NAME
From INFORMATION_SCHEMA.COLUMNS As C
Where C.TABLE_SCHEMA = T.TABLE_SCHEMA
And C.TABLE_NAME = T.TABLE_NAME
Order By C.ORDINAL_POSITION
For Xml Path('')
), 1, 2, '') As Columns
From INFORMATION_SCHEMA.TABLES As T
Where T.TABLE_CATALOG=@DBName
and T.TABLE_NAME=@tablename

I hope you enjoy it too!

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Welcome to the new Deja Vu, you can populate a column from another database….

Greetings and other Salutations!
Yesterday I was working with someone new to T-SQL who needed to get data from one table in a database to another table in a different database. He was stumped and spent hours trying to find some way to do it. I was able to help him and realized this might be a common problem for people new to T-SQL.

We have two databases on our Instance SuperHero and Marvel and each database has a table Superhero.dbo.Character and Marvel.dbo.Bio.

First, prep the table you want to put data in. You won’t be using an insert statement for this task because in our scenario we already have data in our table. To prep my table I am adding a column at the end of my table and allowing it to have nulls.

Character
CharacterID, Name, Universe, RealName(This is our new column that is null)
1, Spider-man, Marvel,
2, Batman, DC,
3, Iron Man, Marvel,

Bio
BioID, Name, CharacterID, RealName(This is where we will update our new column from)
1, Spider-man, 1, Peter Parker
2, Iron Man, 3, Tony Stark

Next, we join across databases. As you can see these two tables would join on CharacterID so:

 
SELECT C.CharacterID, C.Name, C.Universe, C.RealName, B.BioID, B.Name, B.CharacterID, B.RealName
FROM Superhero.dbo.Character C
INNER JOIN Marvel.dbo.Bio B ON C.CharacterID = B.CharacterID

The “INNER JOIN” also acts as my where clause so that it will only update records that match in both. Please always build and test your SELECT statement first to make sure it is going to update what you expect.
Now we build our update:

 
UPDATE dbo.Character
SET RealName = B.RealName
FROM Superhero.dbo.Character C
INNER JOIN Marvel.dbo.Bio B ON C.CharacterID = B.CharacterID

Be sure you are running on the Superhero database for your update.
Who knew bringing super heroes together would only take a query?