Experienced users and newcomers / Přidejme citace

SQL

SET @minEdits = 20; -- 1) number of edits the user has to have to be considered experienced
SET @minTenureDays = 1; -- 2) if the user registered @minTenureDays days prior to the event (@eventDate), they're experienced
SET @eventDate = '20240424000000'; -- 3) see @minTenureDays

SELECT
	user_name,
    user_editcount,
    IF(user_registration IS NOT NULL, user_registration, 'Unknown') AS user_registration,
    IF(
      (
        -- have at least @minEdits edits
        user_editcount >= @minEdits AND (
          -- user_registration is not populated for users who registered pre-2005
          user_registration IS NULL OR
          -- are registered for at least @minTenureDays
          DATEDIFF(@eventDate, user_registration) >= @minTenureDays
        )
      ),
      "Experienced",
      "Newcomer"
    ) AS is_newcomer
FROM user
WHERE user_name IN (
'Lucie Čepcová',
'Jitka.dockal',
'Zojas',
'HankaLuk',
'TrnkoJana',
'Jatanyll',
'Ludmilabreu',
'SkopMichal',
'Dolečková Kateřina',
'DaniKnihovnicka',
'Zemanka',
'Skot'
)
SQL

Checking query status...
