array aggre distinct postgres - SQL 代码示例

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📜 array aggre distinct postgres - SQL 代码示例

📅 最后修改于: 2022-03-11 15:05:07.634000 🧑 作者: Mango

SELECT ARRAY(SELECT DISTINCT e FROM unnest(ARRAY[a,b,c,d]) AS a(e))
FROM ( VALUES
  ('foo', 'bar', 'foo', 'baz' )
) AS t(a,b,c,d);