clickhouseConvert hex to int

SELECT toInt32(unhex('313233'))ctrl + cyoutubegithub

`unhex(` converts given HEX to string	`toInt32(` converts text to int (32 bytes, but can use any of available converters)
`313233` sample HEX num (which is `123` int)

SELECT toInt32(unhex('313233'))

┌─toInt32(unhex('313233'))─┐
│                      123 │
└──────────────────────────┘