Re: Why the index is not used ?

[Paul McGarry]

I haven’t looked up what pgp_sym_encrypt() does but assuming it does encryption 
the way you should be for credit card data then it will be using a random salt 
and the same input value won’t encrypt to the same output value so
====
WHERE cc=pgp_sym_encrypt('test value 32', 'motdepasse');
====
wouldn’t work because the value generated by the function when you are 
searching on isn’t the same value as when you stored it.



Paul

> On 6 Oct 2018, at 19:57, ROS Didier <didier....@edf.fr> wrote:
> 
> WHERE cc=pgp_sym_encrypt('test value 32', 'motdepasse');