On 12/12/2011 03:54 PM, Robert Haas wrote:
> On Mon, Dec 12, 2011 at 3:38 PM, Simon Riggs<simon@2ndquadrant.com> wrote:
>> Rather than fuss with specific data formats, why not implement
>> something a little more useful?
>>
>> At present we can have typmods passed as a cstring, so it should be
>> possible to add typmods onto the TEXT data type.
>>
>> e.g. TEXT('JSON'), TEXT('JSONB')
>>
[...]
> There are way too many places that assume that the typmod can
> just be discarded. I don't think that's going to fly, because
> =(text,text) probably has different semantics from =(json,json).
>
And certain places where they are not allowed at all, I think (unless I
am misremembering the early debates about enum types and output functions).
cheers
andrew