mysql limitation varchar memory -


are differents in stored memory between varchar(30) , varchar(255) example in creating tables if fields adapts number of letters.

example:

i have created 2 tables 1 field name, in first table name varchar(255), in second varchar(30). store 3 values in both: -'one' -'two' -'three'

and question is, differents between these 2 tables in memory? have perplexity because in programming languages if declare type example int 4 bytes.


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