I'm pretty new to Python and am completely confused by .join() which I have read is the preferred method for concatenating strings. I tried: strid = repr(595) print array.array('c', random.sample(

INNER JOIN gets all records that are common between both tables based on the supplied ON clause. LEFT JOIN gets all records from the LEFT linked and the related record from the right …

Dec 17, 2013 · Your second join call is not os.path.join, it is str.join. What this one does is that it joins the argument (as an iterable, meaning it can be seen as f, i, s, h) with self as the …

Sep 17, 2012 · The result of join is always a string, but the object to be joined can be of many types (generators, list, tuples, etc). .join is faster because it allocates memory only once. …

Oct 18, 2016 · Is it possible to do the following: IF [a] = 1234 THEN JOIN ON TableA ELSE JOIN ON TableB If so, what is the correct syntax?

What is the difference in results between: RIGHT JOIN and RIGHT OUTER JOIN LEFT JOIN and LEFT OUTER JOIN ? Can you please explain it through some examples?

Feb 14, 2019 · CROSS APPLY instead INNER JOIN and OUTER APPLY instead LEFT JOIN (the same as LEFT OUTER JOIN).

Oct 24, 2011 · A theta join allows for arbitrary comparison relationships (such as ≥). An equijoin is a theta join using the equality operator. A natural join is an equijoin on attributes that have the …

May 25, 2009 · A JOIN is a means for combining fields from two tables by using values common to each. The SQL UNION operator combines the result of two or more SELECT statements.

The question and solutions pertain specifically to INNER JOINs. If the join is a LEFT/RIGHT/FULL OUTER JOIN, then it is not a matter of preference or performance, but one of correct results. …