LAT/LNG coordinates conversion to XY using SQL

[ElieRizk]

Hello,

I am new to SQL and I need your help. I have an SQL table with fields holding LAT/LNG  values (WGS84 as a projection).  I need to convert LAT/LNG to XY using WKID: 20438 (Ain_El_Abd_38N)

1. How can I solve this issue?
2. Is there any query or expression that I can use to convert from LAT/LNG to XY (straight forward)

Thanks in advance for any help