Deletes the duplicates from a table based upon any fields in the table leaving a single copy of the record in the table.
ALTER TABLE TableWithDuplicates ADD EliminateDuplicates_RowID int NOT NULL IDENTITY(1, 1) DELETE FROM t1 FROMTableWithDuplicates t1 JOIN( SELECTEliminateDuplicates_RowID=MAX(EliminateDuplicates_RowID), Field1, Field2, Field3, Field4 FROMTableWithDuplicates GROUP BY Field1, Field2, Field3, Field4 HAVINGCOUNT(*) >= 2 ) t2 ON(t1.EliminateDuplicates_RowID <> t2.EliminateDuplicates_RowID ANDt1.Field1 = t2.Field1 ANDt1.Field2 = t2.Field2 ANDt1.Field3 = t2.Field3 ANDt1.Field4 = t2.Field4) ALTER TABLE TableWithDuplicates DROP COLUMN EliminateDuplicates_RowID
A short but interesting article, the author has figured out a way to create a PDF from a stored procedure without using a third party library.
2019-09-20 (first published: 2003-08-26)
73,237 reads
Robert is back this week with a look at the text data type. Not the easiest thing to work with, but sometimes a varchar just doesn't give you the range you need.
2003-05-07
27,378 reads
Fast Track to MDX gives readers all the necessary background information needed to write useful, powerful MDX expressions and introduces the most frequently used MDX functions and constructs. No prior knowledge is assumed and examples are used throughout the book to rapidly develop MDX skills to the point where a reader can solve real business problems. A CD containing examples from within the book, and a time-limited version of ProClarity, is included
2003-05-01
2,698 reads
Robert is our expert on dynamic sql. This week he offers some good hints for planning the contruction of a proc that will use dynamic sql. He also adds some suggestions on how to format the code so that when you return to it later, you can figure out what you were doing!
2007-10-02 (first published: 2003-04-25)
50,626 reads
In this article Andy looks at one way you can separate your presentation code from your data when you generate HTML tables for simple reports. Lots of code examples so you can see how it works.
2002-08-05
5,909 reads
