Hi,

I am trying to run nested CALL functions but could not get it to work. 
Below is my SQL statement.

insert into EmailSubscription (
>     Email,
>     IsSubscribed,
>     DateSubscribed,
>     SubCode
> ) 
> values (
>     "[email protected]",
>     true,
>     current_timestamp(),
>     call rawtohex(call hash('SHA256', call concat(Email, DateSubscribed), 
> 1))
> );


I want to SHA256 hash the concatenation of the email address with the 
timestamp of subscription and then convert the raw SHA256 binary output 
into a hexadecimal representation to be inserted as the 'SubCode' for the 
table.

How should I go about doing that in SQL ?

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