Regex for SQL Table Name Cleanup

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I need to run a check against a user inputted sting that will become the name of a dynamically created table on a SQL Server database. I just wanted to make sure that I was getting this Regex correct and not missing anything. Am I covering all the bases for the identifier format rules with this expression?

C#

System.Text.RegularExpressions.Regex.Replace(tableName, @"[^\w\.@$#]", "");

It's the first time I've used a regular expression and wanted to be extra careful.

Posted 3-Dec-15 4:34am

Foothill

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phil.o · Accepted Answer · 2015-12-03T04:52:00

Solution 1

There you will find the rules for SQL Server string identifiers:
Database Identifiers[^] (see 'Rules for Regular Identifiers' in this page).

[Correction] I did not read the code correctly. Apparently you are trying to replace all characters that are not a word, a point, a @, # or $.

I don't think a point can be part of an identifier.

Posted 3-Dec-15 4:52am

phil.o

Updated 3-Dec-15 4:56am

v2

Comments

Foothill 3-Dec-15 10:56am

That's the page I followed. I'm just trying to make sure that the Regex is done correctly or if I'm missing something.

phil.o 3-Dec-15 11:28am

Then I don't think the "\." should be in your exclusion list. A point should be replaced by an empty string to construct a valid identifier.

Foothill 3-Dec-15 13:24pm

That's why I asked for the review. Thank you, phil.o.