compare two tables and add result in second table - sql-server

Question

I have been working on comparing two almost identical tables and update/add the result in second table. Here are the two tables i am using. Person1(ID,Name,PHNumber) and Person2(ID,Name,PHNumber,IsActive).
Note: person1 has always a more/less/same rows than person2.Person1 is reference table we need to add/delete the rows which does/doesnot present in person1 int to person2. I am using microsoft SQL server management studio.
Case1: If the compared result has more rows(Let say person1 has 10, person2 has 8rows) then we need to add those(2rows) to person2 and keep IsActive-1 for those rows.
Case2: If the compared result has differnce(Let say person1 has 10 but person2 has 20rows) then we need to find those delta 10rows and keep IsActive-0 for those 10rows.
Hope the query is clear and expecting your valuable solutions. Thank you.
Here Person1 does not contain newdata2 and contains newdata,newdata1 which are
new values after comparing, so we are giving IsActive-0 and IsActive-1
respectively.
Person1:
ID Name PHNumber
1 missouri 123
2 kansas 111
3 stlouise 234
4 california 456
5 india 888
6 srilanka 780
7 dallas 890
8 texas 1111
9 mario 1112
10 sister 7878
11 pontiac 8765
12 newdata 1234
13 newdata1 2345
Person2:
ID Name PHNumber IsActive
1 missouri 123 1
2 kansas 111 1
3 stlouise 234 1
4 california 456 1
5 india 888 1
6 srilanka 780 1
7 dallas 890 1
8 texas 1111 1
9 mario 1112 1
10 sister 7878 1
11 pontiac 8765 1
12 newdata2 987 1
RESULT: Person2:
ID Name PHNumber IsActive
1 missouri 123 1
2 kansas 111 1
3 stlouise 234 1
4 california 456 1
5 india 888 1
6 srilanka 780 1
7 dallas 890 1
8 texas 1111 1
9 mario 1112 1
10 sister 7878 1
11 pontiac 8765 1
12 newdata2 987 0
13 newdata 1234 1
14 newdata1 2345 1

Answer 1

If you are still looking or answer, you can try like this...
;WITH cte
AS (SELECT
COALESCE(p1.id, p2.id) AS id,
COALESCE(p1.name, p2.name) AS name,
COALESCE(p1.phnumber, p2.phnumber) AS phnumber,
CASE WHEN p1.name IS NULL THEN 0 ELSE 1 END AS IsActive
FROM Person1 p1
FULL JOIN person2 p2
ON p1.name = p2.name
AND p1.phnumber = p2.phnumber)
SELECT
ROW_NUMBER() OVER (ORDER BY id, phnumber) AS id,
name, phnumber, IsActive
FROM cte