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Is there any effect if i interchange MySQL/MariaDB .frm files from dbs with similar structure on any CRUD operation?

note: the different is some tables have different fields, whether its existence, datatype, default value or any others.

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The .frm drives the parsing of rows. So if the datatype or number of columns changes, it seems very likely that the rows cannot be read.

Consider using a VIEW to "change" the structure of a table.

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