SQL Combine 2 Different Table

This SQL is use to combine 2 different table together for other purpose.
SELECT ISNULL(a.Col1,b.Cola) , ISNULL(a.Col2,b.Colb)
FROM Table1 a
FULL JOIN Table2 b
ON a.Col1 = b.Cola

Here is 2 Different Table,
Table Name : Salary

Name	Salary
emil	1000
rayden	2000

Table Name: Flight

FligtTicket	Price
Kuala Lumpur	265
Bangkok	878

Below Sql is use to combine above 2 Tables Become below 1 Table
SELECT ISNULL(a.Name,b.FlightTicket) AS Col1, ISNULL(a.Salary,b.Price) AS Col2 FROM Salary a
FULL JOIN Flight b ON a.Name = b.FlightTicket

Col1	Col2
emil	1000
rayden	2000
Kuala Lumpur	265
Bangkok	878