Thanks for referring to Microsoft tutorials. I am currently working on multi layered Databases of much bigger volumes and as i am not exposed to those i feel somewhat nervous.
I would be very much thankful to people who would help me with regards to improving my skills on SQL. I am looking for some Websites which would have exercises or query samples on Adventureworks by which i can improve my SQL skills. Leave a Reply Cancel reply Your email address will not be published.Last post Sep 17, AM by gerrylowry. See you for Day 2 AdventureWorks! One comment. Learn how your comment data is processed.
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Your email address will not be published. There are a lot of concepts involved here, so further reading is well recommended. And that was all for this first day of training. Using Common Table Expressions is a good way of doing it. When queries get too big, sometimes for readability is better to split the logic in small parts to we can understand them better. The first solution I came up with is to use a correlated subquery which filters by the maximum date for each person. More concepts apply here depending on the approach we want to take. More functions into play, in order to comply with the requirements, we will need to use a function to generate the column full name and another to format the date to the required, also some calculation must be done to calculate the weekly salary as in the database we only store the hourly rate.
Also we need to display the name of the column as MiddleName, hence we need to use an alias for it.Īgain we need to use an alias to name the column. Next one is built on top of the previous again. Retrieving data from more than one table requires a more elaborated query, where we specify the tables involved and the equality columns for each of the JOIN operators.
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