Scripts

Technical Article

Reset Identity Seeds

This Script is used to reset the Identity coloumn to whatever the value we required. We need to compile this procedure in the database where we required to ressed the Identity coloumns of every table. After compiling we need to execute this procedure with a parameter of integer value. Then it will reseed the Identity […]

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2006-08-29 (first published: )

222 reads

Technical Article

Use TSQL for Drawing

This is an algorithm from the september 1986 issue of Byte Magazine, in an article called Abstract Mathematical Art. It borrows from Tim Conways Game of Life to represent an algorithm by which a series of numerical values can attempt to replicate itself. It is deeply steeped in the philosophy of Caos Theory and Evolution, […]

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2006-08-28 (first published: )

360 reads

Technical Article

Alphanumeric and Special Character Validation

Inspired in the script submited by ramesh_kondaparthy , this is a set oriented solution for the same problem.Parameters: 1) @InputString varchar(25)Accepts the string, which we need to validate 2) @Type int = 0 validate the string for only alphanumeric charactersi.e Allows characters between [A-Z] ,[a-z] and [0-9] = 1 validate the string for alphanumeric and […]

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2006-08-22 (first published: )

4,101 reads

Technical Article

Change to readable date format

Trigger to insert date into table in the form of01/01/00 12:00:00instead of SQL standard date format2000-01-01 12:00:00.000This allows easily comparing to or updating based onOracle date formats or a readable format for the web.triggername - name of the triggerTABLENAME - name of the table that trigger is created onCOLUMNNAME - name of column in TABLENAME […]

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2006-08-21 (first published: )

496 reads

Technical Article

relatively simple mode, median, mean

Here's a sample script to help you get some generic mode, median, and mean statistics for something. In my example, I'm getting the number of days something takes to start and stop some task. The idea is that I'd have a fairly short list of jobs, and record would record the job id, and start/stop […]

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2006-08-17 (first published: )

1,122 reads

Technical Article

Function to return the SQL Build Number

This function returns the SQL Build Number as a nvarchar(20) string. i.e. '8.00.760' @@Version is great, but super long, and the formatting of the string has changed over the years. This helps me find out what build of SQL I'm working on in a quick and efficient manner. The script includes the drop statement as […]

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2006-08-09 (first published: )

1,090 reads

Technical Article

Function to return the SQL Version Number

This function returns the SQL Build Number as an int. i.e. 7, 8, or 9. @@Version is great, but super long, and the formatting of the string has changed over the years. This helps me find out what version of SQL I'm working on in a quick and efficient manner. The script includes the drop […]

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2006-08-08 (first published: )

1,296 reads

Technical Article

Bulk Insert WMIC output to table w/ xp_cmdshell

This is an example of retrieving WMIC results using the xp_cmdshell proc, and inserting the results into a table.Specifically, this script retrieves disk info from the LogicalDisk class, but WMIC provides thousands of other properties. WMIC does require it be ran from a Windows 2003 server, but can query other Windows 2000 servers when executed […]

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2006-08-04 (first published: )

827 reads

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Question of the Day

ORDER BY alias

There is a table tmp_tab:

CREATE TABLE tmp_tab (
id int,
val int
);
INSERT INTO tmp_tab VALUES
(1, 1),
(2, NULL),
(3, 3),
(4, 4),
(5, 5);
You want to order the rows ids by the following expression:
    ISNULL(val, id) + 1
Which of the following queries produces the expected ordering and why? (Select all correct)

See possible answers