Sqlite Data Sequence

[ceaser]

Help:sign0085again!)

In a construction project (road, pipeline, railway, etc) you have what we call a horizontal alignment which defines the path that the project follows. Each point (node) where the direction of this path changes is defined by coordinates (Y & X). The coordinates defining this route (path) follow a fixed sequence.

Now, my problem is that if I amend one of these nodes (changing the coordinates), Sqlite puts the amended node at the end of the file, which I don't want.

If it is say node number 3 out of a total of 10 nodes, that I change, then it must say at position number 3 in the file and not add it at the end of the file.

Help!!!!!!!!

Thanks
Michael

 

[BjornF]

Dear Ceaser,

Couldn't you open the file sorted on the position? in which case the physical position in the file does not matter.

all the best / Björn

 

[Erel]

As BjornF wrote you should not assume that the raw data is saved in a specific order.
Instead use Order By to specify the required order:

"SELECT * FROM table1 WHERE ... ORDER BY SomeCol"