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Trying to partially Update a column...


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No, you can't use a LIKE in your set statement - at least not like that. I believe the regex functionality in MySQL is only used for matching, not modifying. Is "wp_1_" at the beginning of the field value or 'within' the field value. If it is at the beginning there is a simple solution. If it is within, you may need to create a PHP script to process the records individually.

 

Ifi "wp_1_" is at the beginning then this should work:

 

UPDATE wp_usermeta
SET meta_key = CONCAT('wp_', SUBSTRING(meta_key, 5))
WHERE meta_key LIKE 'wp_1_%'

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