The data below are a subset of the Resale dataset provided with the software. This (computer simulated) data. gives the selling price, the number of bedrooms, the total square footage (finished and unfinished), and the size of. the lots for 150 residential properties sold during the last four months in two states.
A common scenario where PIVOT can be useful is when you want to generate cross-tabulation reports to summarize data. For example, suppose you want to query the PurchaseOrderHeader table in the AdventureWorks2008R2 sample database to determine the number of purchase orders placed by certain employees.
A pivot table is a table that summarizes data in another table, and is made by applying an operation such as sorting, averaging, or summing to data in the first table, typically including grouping of the data. A trivial example is a column of numbers as the first table, and the column average as a pivot table with only one row and column.