What is the difference between having and where clause in SQL?
What is Indexing in SQL?

Question

What is the difference between having and where clause in SQL?
What is Indexing in SQL?

A WHERE clause is used is filter records from a result. · Accepted Answer

1)   The WHERE clause is used to filer rows from a results.  For instance

SELECT   COUNT(SalesOrderID)
FROM     Sales.SalesOrderDetail

2)  The HAVING clause is used to filter values in a GROUP BY.  You can use them to filter out groups such as

SELECT   SalesOrderID,
         SUM(UnitPrice * OrderQty) AS TotalPrice
FROM     Sales.SalesOrderDetail
GROUP BY SalesOrderID
HAVING   SalesOrderID > 50000

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