it.unibz.inf.ontop.exception.OntopQueryEvaluationException: org.postgresql.util.PSQLException: ERROR: function array_agg(unknown) is not unique Hint: Could not choose ...
Need to collect multiple values into a single row? in PostgreSQL simplifies the process—no subqueries, string hacks, or complicated joins required. What is ARRAY_AGG ()? is an aggregate function that ...
PostgreSQL arrays allow organization of data into an arbitrary number of dimensions and come with sophisticated primitives to manage this complexity. Given an array A of n elements, indexing is ...
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