What is WHERE statement good for in SQL server script?

Experience Level: Junior
Tags: DatabasesMS SQL ServerQuality Assurance (QA)

Answer

The WHERE statement is used the most often in conjunction with SELECT statement. It applies the filtering condition so only the rows that match the condition defined after WHERE statement are returned in result-set.

The following query will return only customers who ordered more than 3 times.

Query
SELECT * FROM Customers WHERE OrderCount > 3
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