Common use cases for the hex() function include:
* Convert a binary blob into human-readable format.
* Generate a unique identifier or random password using
an expression like: "`hex(randomblob(20))`"
* Generate human-readable hash strings from extension functions
like [sha3()](https://www.sqlite.org/src/file/ext/misc/shathree.c)
that otherwise return a binary blob. Ex: "`hex(sha3(...))`"
* To view the actual UTF8 (or UTF16) of a text string.