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I have a columned database, which I have changed over a period of time. For example, I have a user name, user's level and date

(I have seen Stackshowverflows in other posts, and they are asking me to use triggers. But in my situation, I want to ask about the query of the database that is for the number of changes made. If my question can not be answered, please let me know if I can What is the need for other columns in it? Should I use the interval for this?)

A database is inherently The two suggestions will not take this information for you either, your data will be stored in the form of time series so that instead of updating the price you add a new line as a new line and end the old value Are there. The second option is to add only one column so that you can track the number of updates in that column that cares for you. It can be done in code or in the trigger

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