What exactly does the .join () method do? - Stack Overflow
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(
What is a SQL JOIN, and what are the different types?
Note that a JOIN without any other JOIN keywords (like INNER, OUTER, LEFT, etc) is an INNER JOIN. In other words, JOIN is a Syntactic sugar for INNER JOIN (see: Difference between …
What is the difference between JOIN and INNER JOIN?
INNER JOIN = JOIN. INNER JOIN is the default if you don't specify the type when you use the word JOIN. You can also use LEFT OUTER JOIN or RIGHT OUTER JOIN, in which case the …
LEFT JOIN vs. LEFT OUTER JOIN in SQL Server - Stack Overflow
Jan 2, 2009 · LEFT OUTER JOIN - fetches data if present in the left table. RIGHT OUTER JOIN - fetches data if present in the right table. FULL OUTER JOIN - fetches data if present in either …
SQL JOIN: what is the difference between WHERE clause and ON …
The SQL JOIN clause allows you to associate rows that belong to different tables. For instance, a CROSS JOIN will create a Cartesian Product containing all possible combinations of rows …
What's the difference between INNER JOIN, LEFT JOIN, RIGHT …
An SQL JOIN clause is used to combine rows from two or more tables, based on a common field between them. There are different types of joins available in SQL: INNER JOIN: returns rows …
What is the difference between JOIN and UNION? - Stack Overflow
May 25, 2009 · The SQL JOIN clause is used to combine records from two or more tables in a database. A JOIN is a means for combining fields from two tables by using values common to …
Can I use CASE statement in a JOIN condition? - Stack Overflow
Apr 21, 2012 · A CASE expression returns a value from the THEN portion of the clause. You could use it thusly: SELECT * FROM sys.indexes i JOIN sys.partitions p ON i.index_id = …
sql - Condition within JOIN or WHERE - Stack Overflow
Basically when you are doing a join to see which objects have no association, then putting the conditions inside the JOIN ON will avoid getting redundant data and help the RDBMS engine …
sql - Oracle " (+)" Operator - Stack Overflow
Oct 26, 2010 · FROM a INNER JOIN b ON a.id=b.id Or simply: SELECT a.id, b.id, a.col_2, b.col_2, ... FROM a JOIN b ON a.id=b.id It will only return all data where both 'a' & 'b' tables …