Is there a way to see the raw SQL that a Sequel expression will generate?

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Say I have a Sequel expression like:

db.select(:id).from(:some_table).where(:foo => 5)

Is there a way to get the SQL string that this will generate (i.e. "SELECT id FROM some_table WHERE foo = 5")? I notice that calling inspect or to_s on the result of the above expression includes that generated SQL, but not sure how to access it directly.

And how about Sequel expressions that do not return a dataset, like:

db.from(:some_table).update(:foo => 5)

Is it possible to see the SQL from this before it's executed?

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