Remove space and replace with _ in phpMyAdmin

Basically I want to take a row in a table which has entries 'example entry' and tur开发者_如何学Cn them into 'example_entry'. There are thousands of entries so I don't want to do it manually, obviously. How would I do this?

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Try this:

UPDATE your_table
SET your_field = REPLACE(your_field, ' ', '_')

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Try with the following query:

UPDATE table SET field = REPLACE(field, ' ', '_');