So I'm reading (very slowly) the Querying SQL Server 2012 Training Kit book from Microsoft Press. It's very good, but I'm progressing slowly. This may seem moronic, but I don't think the book explains a question I have:
What are the letters and periods that are before the column names that I see in some of the statement examples?
Take this one from page 154 of the book:
SELECT S.shipperid, S.companyname,
COUNT(*) AS numorders
FROM Sales.Shippers AS S
INNER JOIN Sales.Orders AS O
ON S.shipperid = O.shipperid
GROUP BY S.shipperid, S.companyname;
It might explain this in the book, but I have no idea what the letter and period before the column name is supposed to represent. Can someone help?
Matthew
The Motley Tech - A Tech Tutorial/Commentary Blog http://themotleytech.wordpress.com