An example with SUBSTRING :

SELECT SUBSTRING(Data,1,1000000) part1, SUBSTRING(Data,1000001,1000000) part2, SUBSTRING(Data,2000001,1000000) part3, SUBSTRING(Data,3000001,1000000) part4, SUBSTRING(Data,4000001,1000000) part5, SUBSTRING(Data,5000001,1000000) part6, SUBSTRING(Data,6000001,1000000) part7 FROM MyTable WHERE ID=123

Copy and paste the 7 columns one after the other in a text editor by removing the 0x at the beginning of each column. Then we can do a HEX -> ASCII conversion (for example with Notepad+++)