Question

I have this following table (I’m thinking of putting this as a datatable, but I’m flexible):

ID(int)   Branch(string)   Department(string)   Available(Boolean)

 101          North           Sales               True
 101          North           Marketing           False
 102          North           Security            True
 103          South           Sales               True
 ...          ...             ...                 ...

I want to be able to query Available through [ID][Branch][Department]

So something like [101]["North"]["Marketing"] would give me False, or at least tell me whether a row containing [101]["North"]["Marketing"] exists or not in the table.

What’s the most efficient way to go about this?
Feel free to suggest some other structure if you think it’s more efficient than a datatable

Answer 1

You can set the DataTable’s PrimaryKey to be the first 3 columns then use DataTable’s Rows.Find(101, “North”, “Marketing”) to fish out the row or get null if it doesn’t exist!