You can't actually make them mandatory, but you can add something like:
create proc MyProc
if @MyParam1_in is null
raiserror('Null values not allowed for MyParam1_in', 16, 1)
...the rest of the proc...
- Gus "GSquared", RSVP, OODA, MAP, NMVP, FAQ, SAT, SQL, DNA, RNA, UOI, IOU, AM, PM, AD, BC, BCE, USA, UN, CF, ROFL, LOL, ETC
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