Top "Lookup" questions

Pandas lookup, mapping one column in a dataframe to another in a different dataframe

I have two pandas dataframes: df1 and df2. df1 has columns X and Y and weeknum. df2 has columns Z, …

python database pandas lookup

ToLookup with multiple keys

Is there a way to require multiple keys for the .ToLookup function provided by LINQ? I will admit that this …

c# .net lookup

Dictionary data structure in R

In R, I have, for example: > foo <- list(a=1,b=2,c=3) If I type foo, I get: $…

list r dictionary lookup

Converting Lookup<TKey, TElement> into other data structures c#

I have a Lookup<TKey, TElement> where the TElement refers to a string of words. I want to …

c# c#-4.0 lookup

How to check domain nameservers in PHP?

I need check what nameservers domain is using, but can't find correct solution in PHP. I have tried checkdnsrr(); and …

php dns lookup nameservers

Creating SharePoint 2013 Lookup List Column Visual Studio 2012 List Designer

I'm trying to use the Visual Studio 2012 SharePoint 2013 List designer to create a lookup field but it is not working …

visual-studio list lookup sharepoint-2013

SQL/SSIS DataWareHouse Fact table loading, best practices?

I am building my first datawarehouse in SQL 2008/SSIS and I am looking for some best practices around loading the …

sql sql-server ssis lookup data-warehouse

Algorithm/steps to find Longest Prefix search in Patricia Trie

I am implementing Patricia tries for IP prefix lookup, I could get the code working for complete key match, but …

ip lookup patricia-trie

How can I get SSIS Lookup transformation to ignore alphabetical case?

Hopefully this is easy to explain, but I have a lookup transformation in one of my SSIS packages. I am …

sql sql-server ssis lookup business-intelligence

Enum vs Reference table vs Lookup class

While I'm designing a MySQL database for a dating website, I have come with the doubt of how to store …

php mysql enums lookup