Changes between Initial Version and Version 1 of Ticket #30374, comment 4


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Timestamp:
Apr 17, 2019, 9:58:39 AM (6 years ago)
Author:
Rich Rauenzahn

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  • Ticket #30374, comment 4

    initial v1  
    66> Furthermore, it eliminates duplicate rows from its result, in the same way as DISTINCT, unless UNION ALL is used.
    77
    8 In practice it appears to be true, but I don't think it's strictly defined in the spec.
     8In practice it appears to be true, but I don't think it's strictly defined in the spec .. this SO post says it is guaranteed, but presents no citation:
     9
     10https://stackoverflow.com/questions/31975969/is-order-preserved-after-union-in-postgresql
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