Having
One of the problems that users might want to address in the process of using the SQL language is to limit the output of the result of a sum or other aggregate function operation. For example, we may only want to see information about stores in the Store_information datasheet that have a total sales of more than $1500, and we need to use the HAVING clause. The syntax format is:
Select "Column_name1", SUM ("column_name2")
From "table_name"
GROUP by "column_name1"
Having (arithematic function condition)
(GROUP by clause optional)
Thus, we can use the following command to achieve the above query purposes:
SELECT store_name, SUM (sales)
From Store_information
GROUP by Store_name
Having SUM (sales) > 1500
The query results are displayed as:
Store_name SUM (Sales)
Los Angeles $1800
Small bet
When you set a query condition for a collection function in the SQL language, you use a HAVING clause instead of a WHERE clause. Typically, a HAVING clause is placed at the end of a SQL command
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