If you have a situation where you want to add a column into a table in SQL Server, it would be a good idea to perform a check first if a column has already existed in a table. Otherwise, if you try to add a duplicate column, you may get an error message when you try to add a column via SQL query.
Sometimes when working a team, you want to see if there are some changes have been made in the stored procedures. Whether they have been created new or have been altered recently. If you want to know if there are some changes have already been made, you can use the following simple queries.