The Blog of Angelo » select http://angelo.mandato.com where logic becomes print Mon, 31 Oct 2011 16:12:10 +0000 en hourly 1 http://wordpress.org/?v=3.3.1 Converting URL to Local File Path in Batch MySQL INSERT Query Using SUBSTRING_INDEX() and CONCAT() http://angelo.mandato.com/2009/01/05/converting-url-to-local-file-path-in-batch-mysql-insert-query-using-substring_index-and-concat/ http://angelo.mandato.com/2009/01/05/converting-url-to-local-file-path-in-batch-mysql-insert-query-using-substring_index-and-concat/#comments Mon, 05 Jan 2009 21:28:46 +0000 Angelo http://www.compiledweekly.com/?p=114 I wanted to quickly take a URL (e.g. http://www.compiledweekly.com/somefolder/somefile.ext) and translate it to the local path (e.g. /home/user/public_html/somefolder/somefile.ext) while inserting multiple records into a new table. My first thought was to select all the records, use PHP to trim off the path, then insert the new record in the new table. There’s a better answer, use SUBSTRING_INDEX() and CONCAT() with a INSERT INTO table SELECT statement.

INSERT INTO new_table
SELECT CONCAT(‘/home/user/public_html/somefolder/’, SUBSTRING_INDEX(s.url, ‘/’, -1)) AS local_path
FROM source_table AS s
WHERE …

It does the job with out having to write a single line of PHP code!

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