How can this be done with MySQL or do I need to write a php script -


i have mysql database news under there's table called links. 1 of colum called link_title , have content without quotes "neil-degrasse-tyson-why-you-will-levitate". there 40,000 rows in table.

i have txt file called topurls.txt google analytics shows top visited 1500 urls on site. 1 line, 1 url. , urls have been cleaned match content of link_title in db.

can guide me on mysql script clean links table of rows not have link_title matches 1 of 1500 urls in text file. or need program in php or something?

load topurls.txt table. let's call topurls , call single column of table url. match link_title topurls , delete on mis-match

delete links link_title not in (     select url topurls)

this works if content of google file exactly matches existing database rows. otherwise have had further where clause sub-select withsome string manipulation in it.


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