Maintenance and Management

Technical Article

Eliminate Duplicates

  • Script

This will find and delete all duplicate rows. You can refine the granularity of uniqueness by including more columns than just the Primary Key. If you are picky about which rows you want to delete, don't use this. Instead use the 'Find Duplicates' script I just submitted and then delete manually.

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2002-05-24

1,094 reads

Technical Article

Find Duplicates

  • Script

Find duplicates in any table, and report the number of duplicates. Enter in the table name, and the field or fieldsfor which there should only be one row for each of that field, but you suspect are more. For example, if an employee table has more than one record for an employeethis will find any […]

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2002-05-24

589 reads

Technical Article

Check in New DDL to SourceSafe

  • Script

Rather than invent (or learn) a whole new set of tools to preserve and version all DDL underneath our databases, we decided to use SourceSafe (something we're already using for all other source code). -- We've developed this VBscript to run nightly; it recreates object-level DDL in a given database and compares each object's script […]

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2002-05-09

156 reads

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Question of the Day

Restoring On Top II

I have a database, DNRTest, that has a number of tables and other objects in it. The other day, I was trying to mock up a test and ran this code on the same server:

-- run yesterday
CREATE DATABASE DNRTest2
GO
USE DNRTest2
GO
CREATE TABLE NewTable (id INT)
GO
Today, I realize that I need a copy of DNRTest for another mockup, and I run this:
-- run today
USE Master
BACKUP DATABASE DNRTest TO DISK = 'dnrtest.bak'
GO
RESTORE DATABASE DNRTest2 FROM DISK = 'dnrtest.bak' WITH REPLACE
What happens?

See possible answers