Em 13/10/2016 17:39, Slavomir Skopalik escreveu:
> Big disadvantages of default is:
> 
> 1. Immediately update all rows in table.
> 
> Interesting only if all or most already existed rows will use this value.
> 

No. DEFAULT is a constant expression and is stored in table metadata and
associated with the new table format number. It does not update existing
rows, so is much better than manually update the table.


Adriano

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