In addition to the VARCHAR(255) data type VARCHAR(255) , I would like to add a constraint to the data in the regular expression, for example. [a-zA-Z ] .
I would like to be able to request a regular expression, for example, how can I request metadata in information_schema .
I saw some related posts, but not quite what I'm looking for. I saw: Limit varchar () columns to specific values that show how to use constants, and I saw through triggers here: Is it possible to force data validation in MySQL using a regular expression
Can RegExs be used as constraints, and are these constraints being requested? If so, how?
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