دستور SUBSTRING:

نویسنده :
تاریخ:چهارشنبه 13 دی 1391-08:44 ق.ظ

دستور SUBSTRING:این دستور بخشی از یک رشته را جدا می کند.اندیس شروع ار 1 است.

SELECT

'abcdefg',

SUBSTRING('abcdefg' , 4 ,2(

FORM

 

Students

 




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دوشنبه 18 شهریور 1398 11:22 ق.ظ
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