Best SQL beginner Resources?

Question

I know there are a few SQL knowledgeable people here in the PowerShell group. I'm starting to use SQL to track user\group\workstation migrations between domains. Any advice on some good beginner resources? Books, youtube channels, pluralsight cources etc.. My focus will be more PowerShell SQL manipulation, however I bet know more about SQL in general will help.
This topic first appeared in the Spiceworks Community

Answer 1

Thanks everybody.
First off, I abbreviated the catch portion for the
sake of brevity. I should have mentioned that.
I too, was under the impression that closing the
connection would release the related ResultSet and
Statement resources. However, another guy in my
group is telling me that I'm wrong. Additionally,
there is an event that took place today which spawned
all of this. The database guy called me to complain
that my app had a ton of open connections to the
database. I've been checking the code all day to
look for any connections that were not explicitly
closed. I did find one, but it shouldn't have lead
to the scale of the problem.
On the other hand, I did have a bunch of
PreparedStatements, Statements and a few ResultSets
that were not closed. I've been cleaning them up as
I go along hoping that will help.
However, if closing a Connection does indeed close
ResultSets and Statements, I may be barking up the
wrong tree.It's also possible I'm wrong. Or that the driver you're using has bugs or does not properly adhere to the contracts. I'm absolutely certain that closing a Statement closes a ResultSet, it's in both the ResultSet and Statement documentation. In fact, many operations in Statement close any existing ResultSet before making a new one.
I don't see at the moment anywhere in Connection that mentions if it closes Statements.