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(

1. For INNER JOIN any condition can be in a WHERE instead of an ON as long as there is no intervening OUTER JOIN. 2. When moving a LEFT JOIN condition from an ON to a WHERE the performance is irrelevant since (as you say) in general the result differs. 3. That difference does not in general "transform the OUTER JOIN into an INNER JOIN".

The fact that when it says INNER JOIN, you can be sure of what it does and that it's supposed to be just that, whereas a plain JOIN will leave you, or someone else, wondering what the standard said about the implementation and was the INNER/OUTER/LEFT left out by …

Nov 1, 2013 · Instead of one join with OR it turned into three joins. With each condition in a seprate join and a final join to get that one matching row from either first or second join.

Jan 2, 2009 · Here's a list of equivalent syntaxes: A LEFT JOIN B A LEFT OUTER JOIN B A RIGHT JOIN B A RIGHT OUTER JOIN B A FULL JOIN B A FULL OUTER JOIN B A INNER JOIN B A JOIN B Also take a look at the answer I left on this other SO question: SQL left join vs multiple tables on FROM line?.

The first query employs some lesser-known ANSI SQL syntax which allows you to nest joins between the join and on clauses. This allows you to scope/tier your joins and probably opens up a host of other evil, arcane things.

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?

Theta-join is analogous to a special case of inner join where the on is a theta comparison on of a column from each. Some decades after Codd defined them some textbook (s) misdefined theta join as a generalization that is the analogue of inner join.

Feb 4, 2016 · FROM Table1 t JOIN Table2 t1 ON t1.PhoneNumber = t.PhoneNumber1 JOIN Table2 t2 ON t2.PhoneNumber = t.PhoneNumber2 What i did: No need to specify INNER - it's implied by the fact that you don't specify LEFT or RIGHT Don't n-suffix your primary lookup table N-Suffix the table aliases that you will use multiple times to make it obvious

This was an example, but the point is as Eric said in How can I do an UPDATE statement with JOIN in SQL Server?. You need to add an UPDATE statement at first with the full address of all tables to join with, and then add the SET statement.