Something that annoyed me slightly when moving from MySQL to MSSQL was the complete lack of natural RegEx support. Here is some code that will enable you to use enable RegEx support in MS SQL. It will work with both 2005 and 2008.

public partial class UserDefinedFunctions
{
    [Microsoft.SqlServer.Server.SqlFunction(IsDeterministic = true, IsPrecise = true)]
    public static SqlBoolean RegEx(SqlString Value, SqlString Pattern)
    {
        if (Pattern.IsNull || Value.IsNull)
            return false;

        return Regex.IsMatch(Value.ToString(), Pattern.ToString());
    }
}

To install the function you will need to enable CLR support compile and install the assembly. Then you will need the following sql

CREATE Function RegEx(@Input nvarchar(512), @Pattern nvarchar(512))
        RETURNS BIT AS EXTERNAL NAME SqlExtensions.UserDefinedFunctions.RegEx
GO

You should be able to call the function in normal sql such as

SELECT dbo.RegEx('value', '/vali/')




Last Modified: 23 February 2017

Releated Posts


2012-08-07 - MSSQL - Finding the database restore history
2011-10-27 - CSharp - Number Of Cores and Processors
2011-10-04 - CSharp - Thread Queue Example
2011-09-29 - CSharp - Background Thread / Task
2011-09-24 - MSSQL - Checking Uptime
2011-09-17 - CSharp - Lookup Hostname
2011-08-29 - CSharp - IsGuid
2011-08-29 - C Sharp - StopWatch, The high resolution timer
2011-08-26 - CSharp - Convert Between Meters and Feet
2011-08-23 - CSharp - ThreadPool and Windows Forms
2011-08-11 - MSSQL - Saving memory by using stored procedures
2011-08-10 - C Sharp - MD5Sum / SHASum
2011-08-09 - MSSQL - Last Backup time and size
2011-07-22 - CSharp - Fibonacci sum
2011-07-13 - CSharp - Palindrome
2011-07-11 - CSharp - The string Reverse
2011-07-10 - CSharp - Interviews FizzBuzz
2011-06-27 - CSharp - HowTo Parse a URL
2011-06-24 - MSSQL - Extracting part of an email address
2011-06-22 - CSharp - Extending any class
2011-06-15 - MSSQL - Bulk Deleting rows with backup
2011-06-13 - ASPNET - Login by username or email
2011-06-07 - MSSQL - DBCC Check All Databases
2011-06-03 - MSSQL - Who locks what
2011-05-26 - MSSQL - RandomString Function
2011-05-22 - MSSQL - Removing the aspnet membership database
2011-05-19 - MSSQL - ShrinkLog
2011-05-16 - MSSQL - Enum
2011-05-12 - CSharp - ASPNET Logoff
2011-05-05 - MSSQL - Log Sizes
2011-03-07 - C Sharp - Windows Logoff
2011-03-02 - ASPNET - Dynamic Controls
2011-03-01 - C Sharp - Resize an image by size of height
2011-03-01 - MSSQL - Kill connections by host
2011-02-23 - C Sharp / MSSQL Get inserted value of NEWSEQUENTIALID()
2011-02-22 - MSSQL - Kill connections by username
2011-02-20 - MSSQL - All temp tables are global
2011-02-20 - MSSQL - Unsigned int
2011-02-17 - MSSQL - Convert IP To big int
2011-02-10 - CSharp - Shutdown or reboot windows
2011-02-10 - CSharp - Wake on Lan (WOL) Packet
2011-02-06 - C Sharp - Gridview Bound Yes No
2011-02-05 - MSSQL - Levenshtein
2011-02-02 - MSSQL - Kill connections to a database
2011-02-01 - MSSQL - Convert unix timestamp to date time
2011-01-30 - MSSQL - RegEx Support
2011-01-30 - MSSQL - Adding SHASum support
2011-01-30 - MSSQL - Enabling CLR Functions
2011-01-30 - MSSQL - Adding MD5 checksum support
2011-01-29 - MSSQL - TRIM Function