I'm writing my own /Group by/ operator (non-hashed implementation) and I'm currently looking on a good data structure to store the result groups. There are two requirement in my mind: the table need to be efficiently expanded and the tuples within each group need to be sorted.
I carefully examined the implementation of standard /Group by/ (both hashed and sorted implementation), the closest I got is to leverage parts of the /TupleHashTable/ but before going through this plan, I need to make sure I'm not overlooking an existing data structure. Thanks -- View this message in context: http://postgresql.1045698.n5.nabble.com/TupleTable-like-data-structure-tp5748432.html Sent from the PostgreSQL - hackers mailing list archive at Nabble.com. -- Sent via pgsql-hackers mailing list ([email protected]) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
