2009/10/22 Tom Lane <[email protected]>:
> Pavel Stehule <[email protected]> writes:
>> 2009/10/22 Tom Lane <[email protected]>:
>>> Pavel Stehule <[email protected]> writes:
>>>> this is syntax column(table) necessary still?
>
>>> There is no reason to remove that.
>
>> do you know somebody who use it? It is dead code.
>
> It is not --- it's the recommended solution for emulating computed
> columns.  The column-as-f(x) direction maybe isn't terribly exciting,
> but the function-as-x.col direction definitely is.
>

is it documented?

regards
Pavel Stehule

>                        regards, tom lane
>

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