Combining DROP USER and DROP DATABASE with SELECT .. WHERE query?

Posted by zsero on Stack Overflow See other posts from Stack Overflow or by zsero
Published on 2012-09-09T19:58:16Z Indexed on 2012/09/09 21:38 UTC
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sql

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I'd like to make a very simple thing, replicate the functionality of mysql's interactive mysql_secure_installation script. My question is that is there a simple, built-in way in MySQL to combine the output of a SELECT query with the input of a DROP user or DROP database script?

For example, if I'd like to drop all users with empty passwords. How could I do that with DROP USER statement? I know an obvious solution would be to run everything for example from a Python script,

run a query with mysql -Bse "select..."
parse the output with some program
construct the drop query
run it.

Is there an easy way to do it in a simple SQL query? I've seen some example here, but I wouldn't call it simple: http://stackoverflow.com/a/12097567/518169

Would you recommend making a combined query, or just to parse the output using for example Python or bash scripts/sed?

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