The query below finds the most popular column names.
Query
select col.name as column_name,
count(*) as tables,
cast(100.0 * count(*) /
(select count(*) from sys.tables) as numeric(36, 1)) as percent_tables
from sys.tables as tab
inner join sys.columns as col
on tab.object_id = col.object_id
group by col.name
having count(*) > 1
order by count(*) desc
Columns
- column_name - name of the column
- tables - number of tables that have a particular column name
- percent_tables - percentage of tables that have a column with that name
Rows
- One row: represents a particular column name (each name appears only once)
- Scope of rows: all colum names that appear at least twice (in two tables)
- Ordered by: the most popular are shown first
Sample results
Below is a list of the most popular column names in the AdventureWorksLT database. As you can see, the ModifiedDate column exists in 11 tables, which represents the 68.8% of the tables
Similarly, in Dataedo repository database most popular columns are creation and modifiaction time stamps and logins.
You can learn more about typical metadata fields here: 6 Typical Metadata Fields Stored by Applications