如何在包含冗长的“单词”或一组字符的列中查找字符串

Question

I am looking for an unusually long word or grouping of characters in a specific column of data that contains notes written by users. For example, if something like this -

I am looking for an unusuallylongwordorgroupingofcharactersina specific column

• exists, I need to find it so I can add spaces if necessary. My question is: How do I find a word or set of characters that exceeds a certain number of characters?

The problem is that somewhere in this data, an unusually long word or grouping of characters is being parsed and causing an OutOfMemoryException , so I need to find the source and fix it.

Answer 1

You could use a regex in C# if the raw string fits in memory: \\w{15,} gives you words at least 15 characters in length. There are many ways to tweak this (lookahead, lookbehind, more specific character classes, etc.).

Answer 2

You can write a C# stored procedure that can be run against the column in question. It would split the column into an array of strings containing a word Then you can easily find the largest word in the column.

see http://msdn.microsoft.com/en-us/library/vstudio/zxsa8hkf%28v=vs.100%29.aspx

for details on how to, write install and debug a C# stored procedure in SQL Server

Answer 3

Using the answers given, I created a program that pulls the data and tosses each word into a list. It then pulls words of a given length (in my case, I did greater than 20 characters) and found the bad "word". Now I can fix the data.

I appreciate all your help, guys.