Re: Patch to add support of "IF NOT EXISTS" to others "CREATE" statements

On Mon, Jun 17, 2013 at 11:33 PM, Peter Eisentraut <peter_e(at)gmx(dot)net> wrote:
>
> Replace/alter the object if it already exists, but fail if it does not
> exist.
>
> The complete set of variants is:
>
> - object does not exist:
>
> - proceed (normal CREATE)
> - error (my above description)
>
> - object exists:
>
> - replace (CREATE OR REPLACE)
> - skip (CREATE IF NOT EXISTS)
> - error (normal CREATE)
>

I understood.

The syntax can be like that?
- CREATE [ OR REPLACE | IF NOT EXISTS ] AGGREGATE ...
- CREATE [ OR REPLACE | IF NOT EXISTS ] OPERATOR ...
- CREATE [ OR REPLACE | IF NOT EXISTS ] FUNCTION ...

I can add this features too, but IMHO it is more prudent at this CF we just
implement the IF NOT EXISTS according the initial proposal.

I'm planning another patch do next CF to add support to "IF NOT EXISTS" to
others "CREATE" statements. See my planning [1].

Regards,

[1]
https://docs.google.com/spreadsheet/ccc?key=0Ai7oCVcVQiKFdEctQUxNNlR1R2xRTUpJNFNDcFo4MUE&usp=sharing

--
Fabrízio de Royes Mello
Consultoria/Coaching PostgreSQL
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