Question

You know the drill: some invalid data pops up in the production database and you have to get rid of it. You fire up your Rails console on the production server and type in the query:

Foo.where(bar: 'baz').all

You review the returned data and it’s what you need to remove. Then you type:

Foo.where(bar: 'baz').destroy_all

And your heart stops for a second. You just want to see the query before it runs.

Is there any way to do that in Rails? I’m looking for a method similar to

Foo.where(bar: 'baz').to_sql

but the one that will return the DELETE query.

Answer 1

Just off the top of my head, you could run the console in sandbox mode and run the delete query to see the sql. The changes would just be rolled back on exit.