<prompt> Kujenga query kwa jumla ya maadili ya safu fulani.  <response>: To sum the values of a column in a database, you can use the SUM function in a SQL Structured Query Language query. Here is an example of how to do that:SQLSELECT SUMcolumn_name FROM table_name;In this query, column_name represents the name of the column you want to sum the values of, and table_name represents the name of the table where the column is located.For instance, if you have a table called sales with a column called revenue, and you want to find the total revenue from all sales, you can use this query:SQLSELECT SUMrevenue FROM sales; 