>For the last 3 years I work with huge amount of data and also performs data cleansing. I wrote an article based of my experience which is: String Manipulation on large data using LIKE operator or PATINDEX() in MS SQL. > >In this article I provided lots of examples of how to convert different date formats into a unified date and provided the idea when to use the PATINDEX() instead of the LIKE operator. > >Here is the article: >http://www.dfarber.com/computer-consulting-blog/2011/3/28/string-manipulation-on-large-data-using-like-operator-or-patindex.aspx
