2014-09-01 16:01 GMT+02:00 Craig Ringer <cr...@2ndquadrant.com>:

> On 09/01/2014 09:58 PM, Pavel Stehule wrote:
> >
> > It is in ToDo - allow parametrization for COMMANDs.
> >
> > But this is one point, when I am not sure if we would it. Now -
> > situation is very simply. Variables should not be used as table or
> > column name. With your proposal, the situation will by much more
> > complex, and probably variables should be used in SELECT * FROM x; but
> > it can be ambiguous SELECT x FROM table ... so maybe better to don't
> > allow it
>
> We would have to define a specific parameter marker, as used by things
> like JDBC.
>
>      SELECT x FROM ?tablename
>
>      DROP TABLE ?tablename
>
> or whatever your favourite place-holder syntax is.
>


It can be solution, but I dislike it .. It increase a language complexity
.. vars with or without prefix .. and more,  hidden dynamic SQL

Nothing what I like  - I have a mental barrier to this concept.

Pavel





>
> --
>  Craig Ringer                   http://www.2ndQuadrant.com/
>  PostgreSQL Development, 24x7 Support, Training & Services
>

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