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sql query
Posted by: EMRE CANIAZ
Date: October 28, 2008 01:13PM

oracle da ki lag fonksiyonunu bileniniz varsa bu tur bir fonksiyonu mysql de nasil uygulatabiliriz.ornek olarak; deneme tablomuz su fielda sahip olsun
t_sayilar
--------
10
30
50 bu degerleri kullanarak

t_fark
-----
0
20
20 gibi bir sonuc uretebilecek bir sql e ihtiyacim var yardimci olursaniz sevinirim ,her yeni kayit kendisinden bir oncekiden cikarilmak suretiyle olusacaktir

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