Formatting current_time output

Hi.

Anyone have any tips on how I can approximate the following:

SELECT TO_CHAR(SYSDATE,'HH:MI AM') FROM DUAL; -- Oracle
SELECT TIME_FORMAT(current_time,'%l:%i %p');  -- MySQL

Returned:   10:58 AM

I've found lpad(current_time,5); which gets me 1/3 of the way.
Is there a function I haven't found?

TIA
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