end of day 4 week 1 · 82b79336ea - 7-Modern-Languages-in-7-Weeks---Systems--Security---Algorithms-Track - Gitea: Git with a cup of tea

mrsh/7-Modern-Languages-in-7-Weeks---Systems--Security---Algorithms-Track

end of day 4 week 1

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mrsh

2026-01-22 07:31:44 +01:00

parent 5120f11339

commit 82b79336ea

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week 1/day 3/exo4.sql
									
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				SELECT Count(*) FROM users

				WHERE length(username) <= 20 

				AND  username ~ '^[A-Za-z]+$';