Need to know how PostgreSQL orders records on disk. In this case, I would like to take advantage of index combination as stated in the docs, which as I understand uses bitmaps to get matching rows ...
I have a table in Microsoft SQL Server. Sometimes I need to update, and sometimes I need to insert. I could write 2 stored procedures: InsertNewPerson UpdatePertsonById But I was thinking to write ...
I need help with my database table design. I have group which contains a list of players. In every group each player plays games with other players. Game has also some result for example 1:0 and ...
If an index has more than one attribute in it, is there any speed gained in a select statement whose where clause uses one of the attributes in the index? For example, take a table T with an index on ...
We are just starting to get into business intelligence at our company. We have some architects who are designing our data warehouse and also our data marts. They are using star schema for both ...