sql - C#-Alter table tname add column cname Long Integer NOT NULL-throws exception -

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i creating tables , column dynamically.

first creating tables , adding columns in them alter table.

but whenever 

alter table tname  add column cname long integer not null

is executed, shows error in alter table statement.

and when there decimal(28,0) not null, column added.

database ms-access , using c#

what wrong long int

in jet sql language there isn't long integer database type. specify long or integer.

i have tried sql statement access query builder , doesn't syntax. right, if remove ending not null accepts statement although looking here not seem valid syntax.


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