Note: I added the -dry-run flag so a copy-paste won't automatically ruin anyone's database. Wp search-replace '' '' -skip-columns=guid -skip-tables=wp_users -dry-run It also suggests that often times you'll want to skip the wp_users table. However, WordPress emphasizes that the guid should never be changed, so it recommends skipping that column. WordPress offers a command line tool, wp search-replace, that does handle serialization.Ī basic command would be: wp search-replace 'an-old-string' 'a-new-string' -dry-run Some of the answers above seemed specific to WordPress databases, which serializes much of its data. It would be amazing if MySQL had some built in tool to handle serialized data automatically, but it does not, and since there are different serialization formats, it would not even make sense for it to do so. Here is an explanation of different methods used to serialize object data, and why you might want to do so, and here is a WordPress-centric post: Serialized Data, What Does That Mean And Why is it so Important? in plain language. Serialization is a way to convert "objects" into a format easily stored in a database, or to easily transport object data between different languages. The number of characters in the relevant data is encoded as part of the data. To be sure, a "serialized" field looks like this: a:1: However, if any of the fields that need updating contain serialized data, an SQL Query or a simple search/replace on a dump file, will break serialization (unless the replaced string has exactly the same number of characters as the searched string). If you are positive that none of the fields to be updated are serialized, the solutions above will work well.
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