How to compare database table with excel with same columns in c#?

Question

I have one database table.And I have excel spreadsheet.The columns of these two tables are the same.I would like to compare the ID values ​​of these two tables and find them if they do not match the ID values ​​and save them to the database table.

STUDENTSINFORMATION 学生信息

STUDENTS (ID,NAME,CLASS) 学生（ID，名称，类）

(ID,NAME,CLASS) （ID，NAME，CLASS）

I want to Students (ID) and Excel table (ID) column I would like to compare the columns and insert these ids or ids into the students table if there are 1 different ids. How can I do this?

Answer 1

I would suggest you import your data from the Excel into a separate database table and then write the appropriate SQL to compare the two tables and then insert the difference into the final table. Which database are you using?