![]() Supports both portrait and landscape orientations for screen mirroring.Adjust the screen mirroring quality and color (i.e., brightness, contrast, and saturation).Mirror the Full Screen or a Selected Portion of it.Basically, any device that has a web browser. Supports Any Smart TV, Mac, PC, Smart Phone, Tablet, Game Console, etc.Mirror Anything and Any App on your iPhone/iPad screen to a number of devices simultaneously.* No Wires or Adapters Required! Just open a web browser on your device to view the screen mirror! * Wirelessly mirror your iPhone/iPad screen to TVs, Computers, Smart Phones, Tablets, or Game Consoles, via your home network! Here is the result set.SCREEN MIRROR TO MULTIPLE TV, COMPUTERS, AND DEVICES SIMULTANEOUSLY WHERE EmployeeKey = 272 AND CalendarYear IN (2001, 2002) SalesAmountQuota - LAG(SalesAmountQuota,1,0) OVER (ORDER BY CalendarYear, CalendarQuarter) AS Diff LAG(SalesAmountQuota,1,0) OVER (ORDER BY CalendarYear, CalendarQuarter) AS PrevQuota, SELECT CalendarYear, CalendarQuarter, SalesAmountQuota AS SalesQuota, Notice that because there is no lag value available for the first row, the default of zero (0) is returned. The query uses the LAG function to return the difference in sales quotas for a specific employee over previous calendar quarters. The following example demonstrates the LAG function. LAG(2*c, b*(SELECT MIN(b) FROM T), -c/2.0) OVER (ORDER BY a) AS iĮxamples: Azure Synapse Analytics and Analytics Platform System (PDW) D: Compare values between quarters The following example demonstrates specifying a variety of arbitrary expressions in the LAG function syntax. TerritoryName BusinessEntityID SalesYTD PrevRepSales WHERE TerritoryName IN (N'Northwest', N'Canada') LAG (SalesYTD, 1, 0) OVER (PARTITION BY TerritoryName ORDER BY SalesYTD DESC) AS PrevRepSales SELECT TerritoryName, BusinessEntityID, SalesYTD, Notice that because there is no lag value available for the first row of each partition, the default of zero (0) is returned. ![]() The ORDER BY clause in the SELECT statement sorts the rows in the whole result set. The ORDER BY clause in the OVER clause orders the rows in each partition. The LAG function is applied to each partition separately and computation restarts for each partition. The PARTITION BY clause is specified to divide the rows in the result set by sales territory. The following example uses the LAG function to compare year-to-date sales between employees. ![]() BusinessEntityID SalesYear CurrentQuota PreviousQuota WHERE BusinessEntityID = 275 AND YEAR(QuotaDate) IN ('2005','2006') LAG(SalesQuota, 1,0) OVER (ORDER BY YEAR(QuotaDate)) AS PreviousQuota SELECT BusinessEntityID, YEAR(QuotaDate) AS SalesYear, SalesQuota AS CurrentQuota, The following example uses the LAG function to return the difference in sales quotas for a specific employee over previous years. For more information, see Deterministic and Nondeterministic Functions. NULL is returned if scalar_expression is nullable or default is set to NULL. The data type of the specified scalar_expression. For more information, see OVER Clause (Transact-SQL). If partition_by_clause is specified, it determines the order of the data in the partition. order_by_clause determines the order of the data before the function is applied. If not specified, the function treats all rows of the query result set as a single group. Partition_by_clause divides the result set produced by the FROM clause into partitions to which the function is applied. default must be type-compatible with scalar_expression. default can be a column, subquery, or other expression, but it cannot be an analytic function. If a default value is not specified, NULL is returned. The value to return when offset is beyond the scope of the partition. offset cannot be a negative value or an analytic function. offset can be a column, subquery, or other expression that evaluates to a positive integer or can be implicitly converted to bigint. The number of rows back from the current row from which to obtain a value. scalar_expression cannot be an analytic function. It is an expression of any type that returns a single (scalar) value. The value to be returned based on the specified offset. To view Transact-SQL syntax for SQL Server 2014 and earlier, see Previous versions documentation.
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