Introduction According to the official documentation, the READ COMMITTED isolation level “specifies that statements cannot read data that has been modified but not committed by other transactions”. So, one could think that a record returned under this isolation level existed in the committed state at the time of reading. In this article, I am going […]
2021-10-01
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TransactionDate SalesAmount 2023-01-15 1200.00 2023-02-22 1500.50 2023-03-10 900.75If I run this query, what are the sales growth amounts returned?
SELECT ms.TransactionDate , ms.SalesAmount , ms.SalesAmount - LAG (ms.SalesAmount, 1) OVER (ORDER BY ms.TransactionDate) AS SalesGrowth FROM dbo.MonthlySales AS ms;See possible answers