Re: Remove pg_am.amindexnulls?

Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
> Now that GIN can index null items, its amindexnulls flag in pg_am really
> ought to be set true. However, looking at the usage of that column,
> I wonder whether we shouldn't just delete it instead. The only present
> usage is a rather convoluted test in CLUSTER to see if the index is
> safely clusterable --- and AFAICS that test has been obsoleted anyhow
> by the later addition of pg_am.amclusterable. Anyone against
> simplifying matters by getting rid of pg_am.amindexnulls?

There has been multiple attempts at implementing bitmap indexes in the
"recent" past, any impact between that efforts and your change? That's
all I can think about and I don't even know how much it's related…

Regards,
--
Dimitri Fontaine
http://2ndQuadrant.fr PostgreSQL : Expertise, Formation et Support