How to update, preserve a sequence

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how update column preserve sequence? column, payororder sequence beginning 1, after rows deleted, there gaps in sequence:

1,3,6,11,23

need update these values 1,2,3,4,5

your appreciated.

using row_number() function can

 

  ;with cte as (select pk, sequence, row_number() over (order by sequence) as newseq from payororder)  update cte set sequence = newseq where sequence <> newseq

 

premature optimization root of evil in programming. (c) donald knuth

naomi nosonovsky, sr. programmer-analyst

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SQL Server  >  Transact-SQL



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