Hi, I tried to understand how ts_rank works, but I failed. What does Cover function do? How does it work? What is the DocRepresentation data structure like? I can see the definition of the struct, and the get_docrep function to convert to that format, but by reading those I can't figure out what the resulting DocRepresentation looks like.
I wonder if we could get rid of the istrue flag in QueryOperand, and use a local BitmapSet variable instead? It seems wrong to have a temporary flag that's only used in one function, in a struct that's used everywhere. -- Heikki Linnakangas EnterpriseDB http://www.enterprisedb.com ---------------------------(end of broadcast)--------------------------- TIP 7: You can help support the PostgreSQL project by donating at http://www.postgresql.org/about/donate
