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  • 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 JOIN and INNER JOIN )
  • 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 word OUTER is optional, or you can specify CROSS JOIN OR For an INNER JOIN, the syntax is: SELECT FROM TableA [INNER] JOIN TableB
  • LEFT JOIN vs. LEFT OUTER JOIN in SQL Server - Stack Overflow
    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 of the two tables CROSS JOIN, as the name suggests, does n times m pairings that join everything
  • Using . join() in Python - Stack Overflow
    a = ['hello1', 'hello2', 'hello3'] ',' join(a) I would like to have 'and' instead of a comma before the last element of the list So I would get: hello 1, hello 2 and hello 3 instead of hello 1, hello 2, hello 3 Is there a way to accomplish this using join()? I know I can just type it in the list for a simple example like this, but the
  • SQL Server Left Join With Or Operator - Stack Overflow
    Here is what I did in the end, which got the execution time down from 52 secs to 4 secs SELECT * FROM ( SELECT tpl *, a MidParentAId as 'MidParentId', 1 as 'IsMidParentA' FROM TopLevelParent tpl INNER JOIN MidParentA a ON a TopLevelParentId = tpl TopLevelParentID UNION SELECT tpl *, b MidParentBId as 'MidParentId', 0 as 'IsMidParentA' FROM TopLevelParent tpl INNER JOIN MidParentB b ON b
  • Whats the difference between INNER JOIN, LEFT JOIN, RIGHT JOIN and . . .
    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 when there is a match in both tables LEFT JOIN: returns all rows from the left table, even if there are no matches in the right table
  • Can I use CASE statement in a JOIN condition? - Stack Overflow
    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 = p index_id JOIN sys allocation_units a ON CASE WHEN a type IN (1, 3) AND a container_id = p hobt_id THEN 1 WHEN a type IN (2) AND a container_id = p partition_id THEN 1 ELSE 0 END = 1




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