Question

I have 15 tables and they all have the columns CreationDate and LastModifiedDate is there a way to query all the tables and look for null values in the tables.

This is what I am thinking I have to do but was wondering if there is a more efficient way or easier way to do the following

Select COUNT(*) FROM Table1, Table2, Table3
WHERE table1.CreationDate IS NULL
      OR table1.LastModifiedDate IS NULL
      OR table2.CreationDate IS NULL
      OR table2.LastModifiedDate IS NULL
      OR table3.CreationDate IS NULL
      OR table3.LastModifiedDate IS NULL

Answer 1

select count(*)
from (
    select CreationDate, LastModifiedDate from Table1
    union all
    select CreationDate, LastModifiedDate from Table2
    union all
    select CreationDate, LastModifiedDate from Table3
) a 
where CreationDate is null or LastModifiedDate is null