Re: How to setup default value "0000-00-00" for "date"

Karsten Hilbert wrote:
> > I guess you know where it ends--the index is not used for IS [NOT] NULL
> > expressions. The obvious workaround was to add DEFAULT value to
> > "processed" in form of kind of anchor (we used '-infinity')
>
> Wouldn't it have worked to add an index
>
>     ... WHERE processed IS NULL
>
> and go from there ?

Yes, you use a partial index.  The 8.0beta1 docs mention this:

   Indexes are not used for <literal>IS NULL</> clauses by default.
   The best way to use indexes in such cases is to create a partial index
   using an <literal>IS NULL</> comparison.

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