SQL convert string data in hexadecimal format into string text

Question

I have a table which has a column X. X will be storing large text values in hex format. Now I want to convert hex to raw and validate the data. But when I am using the below que

Answer 1

This can be done in SQL server using built-in conversions via varbinary data type.

-- VARCHAR TO (HEX) VARCHAR
SELECT CONVERT(VARCHAR(MAX), CONVERT(VARBINARY(MAX), 'Help'), 1) -- '0x48656C70'

-- (HEX) VARCHAR TO VARCHAR
SELECT CONVERT(VARCHAR(MAX), CONVERT(VARBINARY(MAX), '0x48656c70', 1)) -- 'Help' (requires 0x)
SELECT CONVERT(VARCHAR(MAX), CONVERT(VARBINARY(MAX), '48656c70', 2)) -- 'Help' (assumes 0x)