Scripts

Technical Article

Change the probability of the pseudo-random values

The usual practice, when we need some test data, is to employ the pseudo-random built-in function RAND(). We usually use it to produce a random value in some range and it produces these values with the same probabilities. Sometimes we need more "realistic" data when some values are more probable than others are. In this […]

(1)

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2002-10-04

294 reads

Technical Article

Frequency of each field in table

This SP will generate the frequency of each occurrence in a field or for every field in a table. The syntax isexex sp_freqall , , , , for example:exec sp_freqall utems2000_2001, null,lastname, 100would return a table (with a field name and a count) for each field in the utems2000_2001 table, except the lastname field and […]

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2002-10-03

250 reads

Technical Article

INSERTS that will STAY after a ROLLBACK is issued

Sometimes it is usefull to log stuff in SQL server while stored procs are running. If a long stored proc runs you sometimes want to be able to log a message in a loggin file. But what if a rollback occurs.... The message is lost as well.Here is a method to set up a seperate […]

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2002-10-01

751 reads

Technical Article

sp_checksize

This stored procedure checks the sizes of one or all databases (including total data, total log, data used/free, data used/free percentage, log used/free, log used/free percentage). If a database name is provided, it will only check the given db. If no parameters provided, all dbs will be checked and the total size of all dbs […]

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2002-10-01

1,044 reads

Technical Article

Find the Nth Occurrence of a Character in a String

T-SQL's CHARINDEX() function is a useful for parsing out characters within a string.  However, it only returns the first occurrence of a character.  Oftentimes one needs to locate the Nth instance of a character or a space, which can be a complicated task in standard T-SQL.  This function I wrote, imaginatively named CHARINDEX2(), allows one […]

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2002-09-27

32,623 reads

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Question of the Day

Squared Values

What happens when I run this code in SQL Server 2022?

SELECT SQUARE('12')

See possible answers