Laurence Gellert's Blog

Monthly Archives: March 2013

MySQL query for obtaining unique list of domain names with count from email field

by Laurence Posted on March 29, 2013

The following MySQL query is useful for getting a count of all the domain names used by email addresses in your database. It isolates the domain name (after the @ sign) in the email field. SELECT substring_index(email, ‘@’, -1), COUNT(*) … Continue reading →

Posted in Code, Data | Comments Off

Using your browser as a dev tool to test HEAD requests

by Laurence Posted on March 4, 2013

A HEAD requests check to see if the resource exists, and what kind of data it might provide. The key to a HEAD requests is the response contains no data, headers only. I’ve been noticing HEAD requests resolving as 404 … Continue reading →

Posted in Application Development, Code | Tagged JavaScript, scripting | Comments Off

Monthly Archives: March 2013

MySQL query for obtaining unique list of domain names with count from email field

Using your browser as a dev tool to test HEAD requests

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Monthly Archives: March 2013

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