row_number()Row_number() window function returns a distinct ordinal number for every row.
SELECT ROW_NUMBER() OVER (ORDER BY …)
FROM …Variants: without order by
Similar functions: rank(), dense_rank(), percent_rank(), cume_dist().
Product specific forms: rownum (pseudo column).
The row_number() window function is defined in ISO/IEC 9075-2:2023 as part of optional feature T611, “Elementary OLAP operations”.
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