JOE SKEET questions

• invalid in the select list because it is not contained in either an aggregate function or the GROUP BY clause
• why does datatable.Clear, clears the other datatable as well?
• sql server 2008 deleting duplicates
• How to match a simple number pattern in VBA using RegEx [closed]
• c# using HtmlAgilityPack to get data from HTML table
• Exporting from a dataset to a tab delimited file
• Object reference not set to an instance of object when using a List<T> in C# [duplicate]
• c# how to get last time in foreach statement? [duplicate]
• c# starting from second element in var
• Each GROUP BY expression must contain at least one column that is not an outer reference

JOE SKEET answers