Konstantin Knizhnik wrote: > rd_projidx is not a list, it is Bitmapset. It is just one of many bitmap > sets in RelationData:
Yes, but the other bitmapsets are of AttrNumber of the involved column. They new one is of list_nth() counters for items in the index list. That seems weird and it scares me -- do we use that coding pattern elsewhere? Maybe use an array of OIDs instead? -- Álvaro Herrera https://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services