Differences between having and where

Source: Internet
Author: User

Select store_name, sum (sales)

From store_information

Group by store_name

Having sum (salse)> 1500

Select count (store_name)

From store_information

Where store_name is not null

Select store_name

From store_information

Where sales> 1000

Having is used to set conditions for the values generated by the function.

Where is used to set conditions for function variables.

Where gives the select condition, that is, the condition for selecting a column. This condition is generally expressed and determined by a column name.

 

Differences between having and where

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