On Tue, 2011-02-01 at 12:14 +0600, AI Rumman wrote:
> I migrated my DB from Postgresql 8.1 to Postgresql 9.0.1.
>
> I have a table "testtab"
> \d testtab
> id int,
> hours varchar
>
> When I execute the following:
> select sum(hours) from testtab
> I get cast error.
>
In 8.3, implicit casts were removed. You can't sum text. You need to
change the data type to a proper numerical type.
Joshua D. Drake
>
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