Say I have two tables, Table A and Table B, and I want to compare a certain column.
For example,
Table A has the columns: IP,Host,App
Table B has the columns: IP,Datacenter,Server,Model,Last_Updated
How do I compare the IP column between the two tables to get the differences?
I know if the tables have the same columns I can use a union and 'minus' to get the differences but I wasn't able to figure out a way if the tables have different columns.
Thanks!
SELECT *
FROM A
FULL JOIN
B
ON a.IP = b.IP
WHERE a.IP IS NULL OR b.IP IS NULL
This will output all columns from non-matching rows in both tables, with NULLs on either side.
you mean you want to get all IPs in table A that are not in table B?
select IP from table A
MINUS
select IP from table B
Did I understand the question correctly?
select distinct column_A FROM table_1 where column_A not in (SELECT column_A FROM table_2)
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