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Re: SQL: Sorting within the sorting

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Starting with SPS 10 it is now possible to specify ORDER BY for STRING_AGG. Example:

 

SELECT
  X,
  STRING_AGG(Y, ',' ORDER BY Y) Y
FROM
( SELECT '1000' X, 'C' Y FROM DUMMY UNION ALL
  SELECT '1000' X, 'A' Y FROM DUMMY UNION ALL
  SELECT '1000' X, 'B' Y FROM DUMMY UNION ALL
  SELECT '2000' X, 'C' Y FROM DUMMY
)
GROUP BY
  X
ORDER BY
  X


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