How open parentheses in if expression?

Question

I have expression. How I can open or rewrite this?

if not ((A or B) and PAR like '%3%') then
    --do some code
end if;

Can do this more simple? Please, give me a link for another expressions as example.

Answer 1

The following should be close to what you're looking for:

IF A = FALSE AND B = FALSE AND REGEXP_LIKE(PAR, '[^3]') THEN
  -- code here
END IF;

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