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Expanding identity to negative values

By Federico Iori,

Let's have a table FI_DIM_TC with primary key column idd in not null identity(1,1).

If the number of rows of FI_DIM_TC grows about to 2mld, data type int begin to be short.

Data type Int can range from -2 mld to 2mld.

We can very easily expand to use negative values.

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