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 …

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 …

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 …

If you are doing a LEFT JOIN, add any WHERE conditions to the ON clause for the table in the right side of the join. This is a must, because adding a WHERE clause that references the right …

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. …

Apr 21, 2012 · Instead, you simply JOIN to both tables, and in your SELECT clause, return data from the one that matches: I suggest you to go through this link Conditional Joins in SQL …

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 …

8 LEFT OUTER JOIN just like INNER JOIN (normal join) will return as many results for each row in left table as many matches it finds in the right table. Hence you can have a lot of results - up …

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. …

The thing I'd like to point out though is that if you have appropriate foreign keys in your database, (between post and post_meta) then you probably don't need an explicit join unless you're …