Add a number to unknown number in SQL

c#, sql

Solution

The `+=` syntax is very new to T-SQL and generally not supported by most PROD systems today and so you just need to spell it out:

UPDATE MyTable SET overallRating=overallRating+1 WHERE ...

Problem

Is it possible to add a number to a unknown number in sql column? For example: In my sql database is a column named "overallRating". I want to add +1 to whatever number is stored in that column. So if number 14 is stored in overallRating column, +1 would make it 15. Is this possible to do this without retreving this number from sql first? Something like: ``` UPDATE MyTable SET overallRating+=1 WHERE url='myurl..' ``` EDIT When solution was already given: Actually I haven't tried my code above, but I did now and it also works. I made a syntax error on my first try, that's why I thought it's not working.

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