Difference between Count() and Count_Big() Funiction

In our Query Life when we need to get the Count of any Record in our Database Mostly we Use the COUNT() Aggregate Function the

Question Now SQL Server Have another  Aggregate Function COUNT_BIG() i asked my Self SQL Server Team Created this Function Whiteout any bin fits ……….. The answer is No . COUNT() and COUNT_BIG() it’s the Same Aggregate Function in the Use The Main Different between the two Aggregate Function it :

Count  Aggregate Function Return Int data type value .

COUNT_BIG()  Aggregate Function Return BigInt data type value .

So if you Have Millions Record in your table and you need to Return the Count of this Record when you use the Count() Function it will Return Error but the Count_Big() Function it will Work with you Simply in this Case .

Count() Aggregate Function :

Select Count(Column_Name) from Table_Name

Count_Big Aggregate Function :

Select Count_Big (Column_Name) From Table Name

Install SQL 2014 must uninstall any SQL product

Today i tried to Install Ne SQL Server Version 2014 CPT to See what is new but before i started the Installation i usual Run the System Configuration Checker to See if my Environment is compatible
with SQL Server version or no
i see this failed

” Previous SQL Server product instillation ”
SQL Server other than SQL Server 2014 CPT 1 is detected
you can not install this version until the exacting instance of SQL product are uninstalled
i think this is bad


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