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Write an SQL that finds for all rows where courseId is null a courseId for an achievement record for which the corresponding achievement option is assigned to and for which all authors are registered as confirmed participants.
The text was updated successfully, but these errors were encountered:
Write an SQL that finds for all rows where
courseId
is null acourseId
for an achievement record for which the corresponding achievement option is assigned to and for which all authors are registered as confirmed participants.The text was updated successfully, but these errors were encountered: