Datatypes char/varchar vs text


Are the maximum sizes of these datatypes documented?
are there advantages of using text over varchar?

I am planning on building a table that has an entity and a bunch of text that has been associated to that entity, and some numeric columns. Machine Learning algorithms will then be used on this table. Does this change the recommended datatype?


No difference among them, they alias to the same thing in the catalog. Max size is 32767.