SQL query to insert non existance data

I am exporting data from Google analytics to SQL database, while exporting data get duplicated if I the program runs many time in the same date range. luckily I can run the canvas of Google analytics data according to an SQL command. how can I write a query that input data from Google analytics if same  "date" was not existing because "date" is the only unique attribute in all the tables.
For instance when I run the program on 17-07-2014 it will go through the database tables check if the same date exist "17-07-2014" then nothing will happened but if it wasn't there new data will be inserted

Thank you
Rawan JambiAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

HuaMin ChenProblem resolverCommented:
You can use cursor with loop to check each record. Read
While loop
Vitor MontalvãoMSSQL Senior EngineerCommented:
Not knowing the structure of the tables, your query should be something like:
FROM GoogleTable
WHERE NOT EXISTS (SELECT 1 FROM TableName T2 WHERE T2.DateColName = GoogleTable.DateColName)

Open in new window


Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Microsoft SQL Server

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.