varchar type is a UTF-8 encoded string (up to 64KB uncompressed)
with a fixed maximum character length. This type is especially useful when migrating from or
integrating with legacy systems that support the
varchar type. If a maximum
character length is not required the
string type should be used
varchar type is a parameterized type that takes a length attribute.
Length represents the maximum number of UTF-8 characters allowed. Values with characters greater than the limit will be truncated. This value must be between 1 and 65535 and has no default. Note that some other systems may represent the length limit in bytes instead of characters. That means that Kudu may be able to represent longer values in the case of multi-byte UTF-8 characters.