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Re: unexpected check constraint violation

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Scott Marlowe <scott.marlowe@xxxxxxxxx> writes:
> You can either cast the check constraint, or change the field type to
> match double precision.

The short answer here is that 0.00603::double precision and
0.00603::real are unlikely to be exactly the same value, and
which one is greater is a matter of which direction the real
got rounded off in.  On my machine the former is a bit larger:

regression=# select 0.00603::double precision - 0.00603::real;           
       ?column?       
----------------------
 1.85072421797494e-10
(1 row)

but on another platform it could be the other way around.

			regards, tom lane

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