Is There a Keyword or Function Opposite of TOP? How Do I get Various LOWEST/BOTTOM Values? Is there a reason for these WITH NOCHECK / CHECK CONSTRAINT Is there a SQL Server 2005 equivalant function to excel's function MROUND? Is there a way of adding bold font in T-SQL? Is there ...
TheRIGHT OUTER JOINworks exactly the opposite of theLEFT OUTER JOIN. In this operation, all the rows from the right table are returned, along with the rows from the left table that match the ones in the right table. Missing values in the left table are given a value ofNULL. Example: C...
When you need to use SQL functions on filters or join predicates, do not use them on the columns on which you want to have an index; rather, use them on the opposite side of the predicate, as in the following statement: TO_CHAR(numcol) = varcol rather than varcol = TO_CHAR(numco...
http://www.softwaretestingclass.com/sql-joins/ The JOIN is very much misunderstood term for beginners while learning the SQL commands. In the intervie
NOT EXISTS works the opposite of EXISTS. The WHERE clause in NOT EXISTS is satisfied if no rows are returned by the subquery. The following example finds employees who are not in departments which have names that start withP. SQL SELECTp.FirstName, p.LastName, e.JobTitleFROMPerson.PersonAS...
UNPIVOT carries out the opposite operation to PIVOT, by rotating columns of a table-valued expression into column values. The syntax for PIVOT is easier and more readable than the syntax that might otherwise be specified in a complex series of SELECT...CASE statements. For a complete ...
If you've looked at any insert, update, or delete plans, including those used in some of my posts,...Date: 07/25/2007The UNPIVOT OperatorThe UNPIVOT operator is the opposite of the PIVOT operator. As I explained in my earlier post, the...Date: 07/17/2007...
EXCLUDE This directive is the opposite of the previous, it allow you to define a space or comma-separated list of object name to exclude from the export. You can include valid regex into the list. For example: EXCLUDE EMPLOYEES TMP_.* COUNTRIES will exclude object with name EMPLOYEES, ...
Consequently, the condition is always unknown so that the where clause rejects all rows. This is clearly quite the opposite of what two-valued logic would suggest.3 Odd Consequence: not in (null, …) is never true Consider this example: WHERE 1 NOT IN (NULL)...
This finds all the rows in the first table not in the second (t1 minus t2). Then the opposite (t2 minus t1). Finally it combines the result of these queries together to return the differences. It does the job, but has a major downside: it reads both tables twice!