Question

Using Sql Server

I want to get max value from two table

Table1

ID Total

101 100
102 600
.....

Table2

ID Total

101 300
102 400
....

I want to get a max value from 2 table according to the id

Expected Output

ID Total

101 300 (max value in table2)
102 600 (max value in table1)
....
...

How to make a Query

Need Query Help

Answer 1

SELECT
   ID, MAX(Total)
FROM
    (
    SELECT ID, Total FROM Table1
    UNION ALL
    SELECT ID, Total FROM Table2
    ) foo
GROUP BY
   ID