Guillaume Lepretre · Dec 4, 2019

[Ensemble] Req table with big data


I've got a table with many attributes and data. There is 10 000 000 registrations approximatly.

I need to make a research on this table with filters, paging,  and order.


You can see an example of my  SQL request : 

SELECT * FROM ( SELECT TOP ALL  * FROM ANCV_Data.Titre WHERE etatTitre = 'Emis' ORDER BY numRemise desc) v WHERE %vid BETWEEN 1 AND 25

Cause there are many data on my table, my SQL req is  too long if I don't have index on my attributes BUT there are many associations possible...

Are they any solutions ?



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You need to index columns used in conditions, for the specified query:

  • etatTitre
  • numRemise

If there are less than 6400 possible values you can use bitmap indices.

Start with individual indices (so the number of indices equals the number of condition columns).