T-SQL

Technical Article

XML Encode UDF

  • Script

I routinely need to retrieve and package query result sets in an XML package.  The built in functions supported by SQL Server 2000 are effective, but are often more of a pain than a help.  This routine can be used in a simple select statement to XML encode the contents of a column during the […]

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2003-10-14

240 reads

Technical Article

Haversine Calculation in User Defined Function

  • Script

Uses the haversine formula to calculate distance between 2 long / lat points.  This can be used with a zip code / lat and long table that are available from the census bureau or post office.The @R can be tweaked dependent on what gives you the best result (its the radius of the earth, fluctuates […]

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2003-09-25

763 reads

Technical Article

Get Column Lists script

  • Script

This is a script like Column_Gitter by Rick Bolin (RickInMesa), it differs in the fact that it does not use cursors, it optionally adds the table name, it handles UDDT (User Defined Data Types) properly, and handles the new SQL Server 2000 datatypes.Usage: Open this script in QA, Change QA to the desired Database, Edit […]

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2003-09-24

718 reads

Technical Article

Replace Mult Instances of a Pattern in a String

  • Script

This function takes a pattern to be searched for, a string that the pattern will be removed from and a flag to determine whether all instances of the pattern should be removed.This is sort of an expanded version of a function I wrote to remove multiple spaces from a string.

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2003-08-20

182 reads

Technical Article

Column_Gitter Part Deux

  • Script

This script is similar to Column_Gitter.  I noticed this script and wanted to present the same output without the use of cursors.  Both scripts work well and produce the same results.  This little utility comes in handy if you do a lot of SQL coding. Given a table name, it'll return four results: The names […]

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2003-08-14

93 reads

Technical Article

ISINTEGER function

  • Script

This function is similar to the ISNUMERIC native function, but tests for a valid integer.  ISNUMERIC can return false positive results when testing for a valid integer.  For example this select returns a value of 1 (true):select isnumeric('3d8')For 6.x and 7.0, you can easily convert it to a procedure.

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2003-08-14

3,019 reads

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Question of the Day

The Maximum Value in the Identity Column

I have a table with this data:

TravelLogID CityID StartDate  EndDate
1           1      2025-01-01 2025-01-06
2           2      2025-01-01 2025-01-06
3           3      2025-01-01 2025-01-06
4           4      2025-01-01 2025-01-06
5           5      2025-01-01 2025-01-06
I run this code:
SELECT IDENT_CURRENT('TravelLog')
I get the value 5 back. Now I do this:
SET IDENTITY_INSERT dbo.TravelLog ON
INSERT dbo.TravelLog
(
    TravelLogID,
CityID,
    StartDate,
    EndDate
)
VALUES
(25, 5, '2025-09-12', '2025-09-17')
SET IDENTITY_INSERT dbo.TravelLog OFF
I now run this code.
DBCC CHECKIDENT(TravelLog)
GO
INSERT dbo.TravelLog
(
    CityID,
    StartDate,
    EndDate
)
VALUES
(4, '2025-10-14', '2025-10-17')
GO
What is the value for TravelLogID for the row I inserted for CityID 4 and dates starting on 14 Oct 2025?  

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