insert a select statement into a table

INSERT INTO table2 (column1, column2, column3, ...)

SELECT column1, column2, column3, ...
 FROM table1

WHERE condition; 

--format
INSERT INTO Customers (CustomerName, City, Country)
SELECT SupplierName, City, Country FROM Suppliers;

--examples
INSERT INTO Customers (CustomerName, City, Country)
SELECT SupplierName, City, Country FROM Suppliers;