To be honest, just limit it to your personal upper limits. A varchar(2) uses virtually the same amount of space as a varchar(200) if your input string is the same. The number in the brackets pretty much acts as a restriction.
Check out this page from the postgre docs for a way more detailed explanation: postgresql.org/docs/9.3/datatype-c...
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To be honest, just limit it to your personal upper limits. A varchar(2) uses virtually the same amount of space as a varchar(200) if your input string is the same. The number in the brackets pretty much acts as a restriction.
Check out this page from the postgre docs for a way more detailed explanation:
postgresql.org/docs/9.3/datatype-c...