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An array is an ordered linear data structure consisting of a collection of elements (values, variables, or references), each identified by one or more indexes. When asking about specific variants of arrays, use related tags as well. When using this tag, in a question that is specific to a database, tag the question with the database being used.
9
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array_length if array is empty behaviour
This SQL finds elements where ids (type is array::bigint) is empty. …